SDG

Ғылым және технология

Review and teardown of the FeelTech FY3200S
Product Link: www.banggood.com/custlink/mKK...
Manual: www.eevblog.com/forum/testgear...
This was provided free of charge for review by Banggood.com #ElectronicsCreators

Пікірлер: 161

  • @ArmandDuPreez
    @ArmandDuPreez7 жыл бұрын

    Really like your presenting style here. Was very informative.

  • @robertcalkjr.8325
    @robertcalkjr.83258 жыл бұрын

    Thanks for the review Steve.

  • @dogastus
    @dogastus8 жыл бұрын

    Excellent review as usual Steve.

  • @cowasakiElectronics
    @cowasakiElectronics6 жыл бұрын

    I'm just watching this now having ordered it yesterday!

  • @Elecifun
    @Elecifun8 жыл бұрын

    I have found this video really helpful. I am a noob to electronics and value the information so much. After watching I feel confident enough to buy one of these and the linear conversion board. It will make a nice swap over project for me. The linear board is here I am waiting in the generator. Cheers :D

  • @TheTim2302
    @TheTim230210 ай бұрын

    Good review, and clear representation. Kudos.

  • @TheRadioShop
    @TheRadioShop8 жыл бұрын

    Very nicely done review Steve. And an interesting bit of gear. May have to look into getting one of those. 60 bucks US. Thanks for sharing.

  • @jeffsansoterra7743
    @jeffsansoterra77438 жыл бұрын

    Nice review. I would be interested in seeing the linear supply upgrade!

  • @KSITREVS

    @KSITREVS

    8 жыл бұрын

    I like the idea!

  • @DextersTechLab
    @DextersTechLab8 жыл бұрын

    nice review, would be nice to see how the waveforms look as the frequency increases to it's rated maximum

  • @N6DMR_Duane
    @N6DMR_Duane7 жыл бұрын

    Great review

  • @GADELHAS82
    @GADELHAS828 жыл бұрын

    Nice as always!

  • @tubeDude48
    @tubeDude487 жыл бұрын

    Thanks for the info. on the Power Loop off of the BNC's! I have the FY3200S, so I'll be testing for the same problem.

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    No problems. Thanks for watching!

  • @eimparas

    @eimparas

    7 жыл бұрын

    +SDG Electronics wher is the secont video with the software?

  • @OrbiterElectronics
    @OrbiterElectronics8 жыл бұрын

    Nice review Steve, seems like it's not a bad performing Sig-Gen at all. Shame about the PSU but as you say hopefully changing the suppression cap will sort that out. Cheers John

  • @donhiscock6933
    @donhiscock69334 жыл бұрын

    Grate review

  • @ShaunakDe
    @ShaunakDe4 жыл бұрын

    12:55 - Now the name "Feel Tech" makes sense!

  • @hdmalpas
    @hdmalpas8 жыл бұрын

    I have a Feel Tech too, and would be very interested in converting to a linear power supply, so I look forward to seeing your conversion.

  • @BruceNitroxpro

    @BruceNitroxpro

    4 жыл бұрын

    First thing I will check is that leakage issue. Holy crap. I have two of the 20 MHz versions. Please show how to correctly hook up the unit as a frequency meter... mine just don't show anything, yet.

  • @buffplums
    @buffplums7 жыл бұрын

    Good review. I bought one of these but haven't even had time to power it up yet. Yes the leakage current is a bit of a worry but like you say, it's really easy to fit a small mains transformer with a split secondary, shouldn't add too much weight. There's a lot to be said for linear, too much reliance on digital these days I think and EMC becomes a bigger problem.

  • @ciprianciprian5228

    @ciprianciprian5228

    6 жыл бұрын

    And you have so much space to fit that mains transformer anyway

  • @paulrautenbach
    @paulrautenbach8 жыл бұрын

    I bought one of these FeelTech FY3224S 24MHz Signal Generators at the end of March 2016 and it has a slightly different version of the switching power supply. The suppression capacitor is a 1nF and I measured the current between earth on my scope and the metal sleeve of one of the BNC connectors as 28µA. I guess this is better.

  • @richardnanis

    @richardnanis

    8 жыл бұрын

    Thanks for the info - good to know! It seems they watch their product reviews at least :-)

  • @voltlog
    @voltlog8 жыл бұрын

    One thing I would of liked to see is how the waveform looks towards the higher range of frequency.

  • @visionvision22

    @visionvision22

    8 жыл бұрын

    + VoltLogDoing 60MHz signal generator

  • @bills405

    @bills405

    6 жыл бұрын

    I agree. The one thing I was waiting for and disappointed not to see was the display of the square wave at the highest frequency. It is where the less expensive function generators seem to fall down.

  • @ChristianIversenX
    @ChristianIversenX8 жыл бұрын

    I have one of these too - I think mine is also the model with 1nf decoupling, since I certainly don't get shocked from it. However, I had to put vinyl tape around the lcd to get rid of light rays into the buttons and encoder parts of the front panel. ..and the worst part is that the signal really jumps all over the place when you get past a few MHz :( All in all, I'm not sure I would recommend this, unless you have very low requirements, and can get a very good price on it

  • @GadgetReviewVideos
    @GadgetReviewVideos8 жыл бұрын

    Just wanted to mention that the fluke 289 retains the main setting that the switch is turned to. But the soft menu sub settings like AC+DC or AC/Htz dual display options under menu does not stay retained. So every time you change the dial it resets to the default main soft menu option, then if you want a different soft menu option you have to select that option by pressing menu again and selecting the one you want. It's a slight annoyance for a meter of this cost when compared to some other Brymen recent models, I hope fluke will issue a software update for this and the menu user interface that could be a little simpler to use in my opinion.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +Gadget Review (GRV) Thanks for the message

  • @johncunningham5435
    @johncunningham54356 жыл бұрын

    Very informative video; I am not a big fan when it comes to switch mode supplies in test equipment. If there is to much leakage it can fry sensitive equipment and present danger to the technician, it may be cheap, but should not be recommended unless the modification is done as you suggested.

  • @retrotechandelectronics
    @retrotechandelectronics7 жыл бұрын

    Can recall if I posted but lack of SYNC on the Sweep feature was a real deal breaker for me...

  • @syncchannelblog267
    @syncchannelblog2678 жыл бұрын

    Quite a "shocking" discovery on the power supply. :) The digital stuff looks acceptable but they really need to fix the power supply issues. Sadly the batch has been manufactured so they will all get sold online in short order. There's plenty of room in the case for a timebase upgrade, but it looks like the main oscillator is 24MHz. I was hoping for 10MHz. Ah well. Looking forward to more of your videos!

  • @TheSenorTuco

    @TheSenorTuco

    7 жыл бұрын

    I was almost ordering it today, decided to watch 1 video before payment, that power supply is turn off.

  • @mrtechnophile3483

    @mrtechnophile3483

    4 жыл бұрын

    Why 10MHz?

  • @K1ZEK
    @K1ZEK3 жыл бұрын

    Nice review. Are you going to do a build video on the power supply or have I missed it ?

  • @BleepingBeep
    @BleepingBeep7 жыл бұрын

    The manual is on the CD.

  • @petrletovsky5830
    @petrletovsky58303 жыл бұрын

    If there are X and Y phase capacitors to ground at the input of the source and the device does not have a 3-pin power cable, it will dig. It's the same as breaking the ground pin in the socket and reaching for the PSU frame of the PC. It tingles.

  • @Reuben1024
    @Reuben10248 жыл бұрын

    Nicely reviewed Sir! The power supply really is such a pity on otherwise a very interesting and feature packed piece of equipment for an unimaginably low price! Would be interested in how the sine wave looked at higher frequencies (is it usable / to spec. over the range stated), THD, square wave rise time spec /shape etc + a look at how the frequency counter compares. Very tempted to buy one and fit a PSU in it. It's worth it (for me) for the sweep function alone !

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    We will take a look more in depth in the next video on this. Unfortunately I don't have a spectrum analyser so can't see how noisy the waveforms are but we will certainly look how good they look visually

  • @Reuben1024

    @Reuben1024

    8 жыл бұрын

    Great - look forward to it, yes even just seeing the waveform will give a good idea for my home use. Thanks for the reply.

  • @FlyingShotsman

    @FlyingShotsman

    8 жыл бұрын

    You could run them through an FFT for a rough approximation...

  • @Reuben1024

    @Reuben1024

    8 жыл бұрын

    would give a 'sketch' of the state and higher end 'scopes have very extensive extra functions to further analyse the FFT but for the square /triangular wave patterns especially a visual inspection / rise time / etc gives a good idea of how usable those will be at higher frequencies where its much more difficult/expensive to design it and economies are evident. I bought a cheap (different) module and the square wave was indistinguishable from a poor sine above much above 2 MHz !

  • @bonez1305
    @bonez13056 жыл бұрын

    Excellent review. Watching the making of linear PSU, would you advise to use a buck converter for the 5v supply, and stay withe the making of transformer for the +12v and -12v supply's .. I might be scrimping omitting the 5v linear you made, but I liked to know if possible. Can you also point to your website please. Thanks

  • @alexmihai22
    @alexmihai225 жыл бұрын

    Where is the video where you change the power supply? I can't find it.

  • @matthewcampbell7153
    @matthewcampbell71535 жыл бұрын

    Thanks for the review... I have one of those and I too am not happy with the PSU. May I ask, did you build or buy a replacement linear supply and if the latter was your choice, what module would you recommend? (My mains voltage here is 110vac). Thank you again...

  • @sdgelectronics

    @sdgelectronics

    5 жыл бұрын

    I did a couple more videos on this kzread.info/dash/bejne/f4Bhzs-ueNLOXZM.html

  • @schiaucugabriel6202
    @schiaucugabriel62027 жыл бұрын

    Can you tell me please the behavior of the signal generator when the offset is at the extremes? On my generator, when I try to go with the offset at maximum positive, the signal become unstable and the frequency bounces around the designed value. Thank you for your answer!

  • @tubeDude48
    @tubeDude485 жыл бұрын

    I did not find the manual on the link provided!

  • @mbaker335
    @mbaker3358 жыл бұрын

    So a fix of sorts could be to replace the bypass capacitor with a 1nF one? Also is this an example where you would want to use a 'Y' capacitor for extra safety?

  • @lolsborn
    @lolsborn7 жыл бұрын

    Do the wave forms hold shape at the higher frequencies?

  • @priestblood
    @priestblood8 жыл бұрын

    hi can I ask is the hardware the same for all ranges so I guess software could be upgraded to the 48mhz

  • @budhafoo
    @budhafoo7 жыл бұрын

    i just got myself one, and all i get from ch1/2 is a flat 10v dc, is there a switch or anything it does seem the unit is broken. trig ports on the back shoots and seems to work fine

  • @hikai1245
    @hikai12456 жыл бұрын

    Comprehensive review...well done. Need help!! I own a FY3200S. The LCD is lite, however, no text. Difficult to use with no text. Oscilloscope confirms the unit is working and the waveforms are normal. Troubleshooting indicates the LCD 3rd pin, VO, has no voltage present. VO traces to R1 which is open circuit... appears to be open. R1 side opposite to pin VO can be traced to ground... confusing. Cannot read the value of R1... maybe 220 ohm. Do you know the value of R1???? Also the voltage source that provides voltage to R1 is not known.... can you help.

  • @mr.success8017
    @mr.success80173 жыл бұрын

    do I have to plug in another device into output to generate signals?

  • @stefanBEAR98
    @stefanBEAR986 жыл бұрын

    Does the frequency counter work correctly?

  • @Mirandorl
    @Mirandorl7 жыл бұрын

    Hello, I just bought a MOHOO function generator which I am presuming is a rebranded one of these as it looks identical. I got it from amazon uk for about 55 quid. I am a total beginner and want to use it as part of the Art Of Electronics course. Should I be worried about the fault? How can I test to make sure mine is ok? Also, do you need to plug a power supply into this as well? I have a TENMA dual output PSU on the way as well.

  • @avadharayati4615
    @avadharayati46152 жыл бұрын

    Can it make sweep on both channel independently ?

  • @alien8r33d
    @alien8r33d8 жыл бұрын

    I got mine today. Did the ACV measurement from BNC shroud to mains Earth, meter reads 218VAC!.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    That's very high, does it have the same PSU fitted?

  • @alien8r33d

    @alien8r33d

    8 жыл бұрын

    Yes, PSU is the same as the one in yours. Needless to say, I have already ordered the parts to replace it.

  • @Jonas_Meyer

    @Jonas_Meyer

    8 жыл бұрын

    How can i fix mine atleast temporary? I dont really know any thing about switch mode psu :(

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +Jonas Meyer You could just plug in the USB cable to your PC if the PC is earthed

  • @felixcat4346

    @felixcat4346

    8 жыл бұрын

    In a subsequent video, the presenter goes on to construct and isolated USB supply. I´m confused is it safe or not safe?????

  • @JasperTielen
    @JasperTielen6 жыл бұрын

    I'm looking for a cheap function generator to light up some leds for camera testing. Will this be able to power 1 to say 5 LED's?

  • @thuff3207
    @thuff32077 жыл бұрын

    Good review but a close look at waveforms would be helpful.

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    If you visit my website, there is further detail there :)

  • @MrMac5150
    @MrMac51504 ай бұрын

    can you put in a tiny isolation transformer in that case, little 1/2 amp

  • @astroboyyo612
    @astroboyyo6127 жыл бұрын

    Hola amigo podrá tener el manual ? gracias

  • @mob7782
    @mob77822 жыл бұрын

    very interested in purchasing ...

  • @SHANUSHAH
    @SHANUSHAH5 жыл бұрын

    It's been awhile you done this Video, Have they sorted the issue with the Power supply? apart from that, this was a great video for people like myself who just getting into electronics and building a cheep Lab.

  • @sdgelectronics

    @sdgelectronics

    5 жыл бұрын

    Yes, they assured that the issue is fixed. The link in the description is the updated model

  • @todresyampel3254
    @todresyampel32547 жыл бұрын

    Thanks for the review. Can this unit produce a modulated signal, say a 10 MHz sine wave modulated by 1 KHz signal?

  • @Ziplock9000

    @Ziplock9000

    6 жыл бұрын

    What kind of modulation?

  • @TomBruner1
    @TomBruner12 жыл бұрын

    I have a version of one of these. Manual is close to useless on how to save the settings. Has anyone figured it out?

  • @researchandbuild1751
    @researchandbuild17514 жыл бұрын

    I dont understand why my funcrion generator output voltage decreases as i increase frequency, that is really going to screw up my ability to test filters

  • @dalenassar9152
    @dalenassar9152 Жыл бұрын

    What are the batteries for???

  • @johnadams9558
    @johnadams95585 жыл бұрын

    Be sure to plug in the USB to grounded host computer. This fixes the voltage leakage and noise.

  • @sdgelectronics

    @sdgelectronics

    5 жыл бұрын

    True, but it can cause ground loops so be careful

  • @johnadams9558

    @johnadams9558

    5 жыл бұрын

    @@sdgelectronics I'm still green so can you suggest some sources explaining this?

  • @2904carlosleon
    @2904carlosleon5 жыл бұрын

    hola , perdón por preguntarte en otro idioma . Me interesa este generador pero tengo una duda - HAY ALGUNA DIFERENCIA ENTRE EL FY 3200S y FY3224S ?? los vendedores los ofrecen pero tengo dudas de cual comprar ,...gracias

  • @KSITREVS
    @KSITREVS8 жыл бұрын

    Hi SDG_Electronics , I found your channel through this video, do you think this was a one off fault like you discovered? I was actually considering buying it but up until now I am a little hesitant! Would it be an easy fix like you mentioned? Great review nicely covered! I look forward to more of your videos :)

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    It's probably not a one off, but most seem to be fine - either way the replacement of that capacitor is technically all that is needed. If you have it plugged into your PC through the USB connector there'll be no leakage into your design under test and effectively would be no different to a more expensive signal generator that always has the BNC shield connected to mains earth.

  • @Elecifun

    @Elecifun

    8 жыл бұрын

    Mine arrived today did the voltage checks and 96V AC on the output. Glad I bought the linear board.

  • @Alchemetica
    @Alchemetica8 жыл бұрын

    This is just an observation on electronic test equipment bought from any of the Chinese online stores that are just a version of Ebay. The observation - I found while looking for an oscilloscope is that I could buy the model I wanted for AUD60.00 less than the cheapest Chinese price and have it delivered express next day for free. The big plus being the strong consumer laws we have in oz that you do not get from the OS stores. So none of this rectifying (pun) poorly designed power supplies - it is just return it and the merchant is responsible for all reasonable return costs.

  • @soothcoder
    @soothcoder8 жыл бұрын

    So I presume that USB to serial converter does not isolate the signal? If so then if you earth the device it will earth the USB also. Potential for ground loops? I suppose that as the device is currently you will get current flowing back into the USB channel too.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    Yes, non isolated so you need to be aware when connecting this to your circuit.

  • @akhurash
    @akhurash8 жыл бұрын

    I'm new to function generators, so I hope you don't mind me asking this... When you measured the current on the BNC connectors with respect to ground, you measured the current between "earth" ground and the BNC ground, is this correct? Why is this measurement important?

  • @peterpv0001

    @peterpv0001

    8 жыл бұрын

    +akhurash What is measured is how isolated the BNC of the generator is with respect to the real ground which is the ground of your mains socket. Ideally the generator should be floating (like if it were running on batteries) so no current can flow at all. But since it uses a main supply there is some leakage so some current can flow. This is an unwanted side-effect of the switching type mains supply used in this generator. An "old fashined" linear supply with a mains transformer would provide better isolation. You want good isolation to prevent unwanted currents flowing into a sensitive pin on a chip for example. The current this generator delivers through it's BNC ground would be enough to damage an IC.

  • @akhurash

    @akhurash

    8 жыл бұрын

    +Peter-Paul Vervoort Thank you for the reply.

  • @Ziplock9000

    @Ziplock9000

    6 жыл бұрын

    Which means any electronics you test with this function generator that may be Earthed may have 90v pass through them.

  • @_Junkers
    @_Junkers7 жыл бұрын

    Why is it they couple the primary and secondary coil on the flyback transformer?

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    It helps to prevent the output of the power supply and your device acting like a big antenna for all the switching noise. Instead it's coupled back to the source.

  • @_Junkers

    @_Junkers

    7 жыл бұрын

    Cheers. I thought a SMPS has filter caps for this purpose though?

  • @RICKYDENNIS49
    @RICKYDENNIS497 жыл бұрын

    Can this unit provide a modulated signal suitable to align if cans in an am radio, (maybe using both channels). Any help would be very much appreciated, cheers.

  • @ferreiraricardo

    @ferreiraricardo

    7 жыл бұрын

    Ricky Dennis This is exactly my doubt. It's possible, I hope someone answers.

  • @GadgetReviewVideos
    @GadgetReviewVideos8 жыл бұрын

    Nice thorough review. Just curious, were you able to change the capacitor to a lower value on the power supply? Did it cut back on the current through the BNC connectors? This unit looks like it will cover what I'm looking to use it for, but I don't feel like damaging my Rigol scope or other equipment.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +Gadget Review (GRV) Yes the capacitor value can be dropped to 1nF to get a more acceptable current. You can also replace the mains lead or connector for one with an earth and earth the 0V on the secondary. Part 2 is almost ready with a complete replacement with a linear power supply.

  • @GadgetReviewVideos

    @GadgetReviewVideos

    8 жыл бұрын

    +SDG Electronics Thanks. Looking forward to the part two video. I think I'll wait for part two and then I might have to give this one a try.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    Gadget Review Should be uploaded tonight :)

  • @davidprice2861
    @davidprice28616 жыл бұрын

    I'm going to earth the pcb ground and swap out the transformer cap. Can you specify the best cap for the job? Thanks, good review.. Too mess about with different ps would cost more than the unit.

  • @sdgelectronics

    @sdgelectronics

    6 жыл бұрын

    I would use Rubycon ZLH or Panasonic FC or FM capacitors

  • @garybevis8691

    @garybevis8691

    6 жыл бұрын

    Here in the states you can get small power transformers for a few dollars and the linear regulators and electrolytic caps for a small perf board power supply would be about the same as the transformer. In other words less than $20 or about 10 quid for a reliable regulated power supply.

  • @aikendrum1518
    @aikendrum15186 жыл бұрын

    have you got a higher bandwidth scope? Interested in what you find with 500MHz bandwidth

  • @sdgelectronics

    @sdgelectronics

    6 жыл бұрын

    Chris Burton if you take a look at my website, there are some scope captures on there

  • @aikendrum1518

    @aikendrum1518

    6 жыл бұрын

    Thanks, had a look. I like the convenience of this unit except mine has two issues that may be design issues rather than problems with my particular unit - and wondering if you also see them. I am using a 500MHz analog bandwidth scope with a 500MHz 10x probe. When look at the unloaded output of the unit I see very strong glitches at around 250-300MHz on the sine wave output. I don't see these when going directly into my scope configured for 50Ohms. Not sure what the trigger bandwidth is on the rigol you have, and whether of not you will see it, but the result would be a perceived jitter if you adjust the level and it may trigger just above the waveform amplitude as sometimes when I turn it on the spurries are on the peaks (other times in the guts). I also am very confused about output levels. If I am supposed to use this unit with a 50Ohm load, then shouldn't to LCD set voltage correspond to loaded voltage? The LCD lines up very accurately with the unloaded output but does not with the loaded output. Really there should not be such a dependency at all!

  • @alexmihai22
    @alexmihai223 жыл бұрын

    Can you provide the software for this, please? I can't find my CD.

  • @sdgelectronics

    @sdgelectronics

    3 жыл бұрын

    I think you can get it on the Banggood website. I also lost mine

  • @DogRox
    @DogRox8 жыл бұрын

    I got one of these back in November of last year and I used it once and I wasn't aware of this issue with it. So before I use it again I want to make sure that I don't have this issue. I did not understand one thing you said about the capacitor. The suppression capacitor and what type and size. Although I did understand when you said it should be a 1nf. but what was the value of the original and the type of it so I can tell if I need to replace it in my unit? I appreciate a response. thank you. :-)

  • @DogRox

    @DogRox

    8 жыл бұрын

    The reason why I'm asking is because I took mine apart and I found out it's completely a different power supply board that don't look anywhere near to the ones I seen on youtube videos including yours. so I can't tell if it's newer or older. But when I got it it was in pretty rough shape. The front clear area of the display scratched, one of the rubber feet missing. when I contacted BangGood about it they said it WAS new and as long as it was working the only thing they could do was give me credit points for my next order. Which I didnt think was right. But to avoid shipping it back and having to pay extreme shipping rates from the New York State and then on top of it waiting another 3 months for replacement, I accepted the offer. That's what I am saying I don't know if I have an older version or a newer version of the power supply. I cannot see the markings on the capacitor that I ASSUME is the EMI suppression capacitor, because the letters are worn off on the capacitor. So right now I'm at a loss. :(

  • @DogRox

    @DogRox

    8 жыл бұрын

    can anyone help? As I said the power supply built into my feeltech fy3224 does not look anything like the power supply that you have from your unit. Or anybody else's I've seen on KZread. That is why I'm wondering if I either have an older version of the power supply or a newer version of the power supply as I can't tell the value of the capacitor. Or if it even is EMI suppression capacitor. can anybody tell me how to post a picture? I have a picture on my Google Plus page. and I want to post it here so you can give me an idea what I should to do. I also like to note that it is all filled in with some kind of white glue epoxy as you'll be able to see in the picture itself. I appreciate some information asap.

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    Hi, I've only just seen your comment for some reason. There are a few different PSU designs going around - if you visit the EEVblog forum, you should find a thread there with other pictures. The capacitor fitted to mine appeared to be 10nF.

  • @error079
    @error0798 жыл бұрын

    What functions are available via USB?

  • @peterpv0001

    @peterpv0001

    8 жыл бұрын

    +error079 1) load arbitrary waveforms 2) control the device (select waveform, amplitude, frequency etc.) There's a Windows program to control the device. I also managed to control mine by using Python and this library: github.com/atalax/python-feeltech

  • @fergusonaj
    @fergusonaj3 жыл бұрын

    Great video. I have the 3200S with the leakage issue about to be fixed. Anyone have access to English language software for PC connection? The CD sent with it is useless.

  • @jacekpaw1
    @jacekpaw18 жыл бұрын

    Why did they place ground symbol near BNC connectors? On the second thought when you connect it to the computer via USB it will become ground referenced. I don't like this device. Thank you for very interresting video! BR, Jacek.

  • @dl9ar245
    @dl9ar2454 жыл бұрын

    Despite the power supply issues this is a quite nice device. Has anybody found out wether it is possible to get a trigger signal out of it at the start of a sweep? 73, Andreas.

  • @sdgelectronics

    @sdgelectronics

    4 жыл бұрын

    I will try to remember to check this later.

  • @ellisp83
    @ellisp835 жыл бұрын

    Hi am wondering if you can help me. Ive got one of these and I cant find software or driver for this to run on windows 10. The little cd that came with it I cant find. Can you help? Id be so grateful !!! Thanks

  • @sdgelectronics

    @sdgelectronics

    5 жыл бұрын

    files.banggood.com/2016/06/SKU292321%20CD.zip

  • @ellisp83

    @ellisp83

    5 жыл бұрын

    @@sdgelectronics thanks alot! Looking forward to the smd soldering videos btw :)

  • @tonyperry6702
    @tonyperry67027 жыл бұрын

    Steve, could I swap out the 2 prong plug for a 3 prong and just tie the grounds of BNC connectors to the third leg (ground)?

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    Yes, that is definitely an option if you're OK with the SMPSU being in there.

  • @tonyperry6702

    @tonyperry6702

    7 жыл бұрын

    Steve, One more question. I have a power supply for outdoor lighting. It is 120VAC 60HZ primary and 12VAC 60HZ 44W output. I want to build a full wave rectification circuit to swap the incandescent bulbs for LEDs. The diodes I have rated for 150V & 5A (overkill I know but it's what I have). The FV is .85V for each diode. The LEDs are 3watt & have a FC of 700mA each and a FV of 3.8V each. I calculated I'd need about a 4-to-5uf cap to smooth out the voltage. Does this seem accurate?

  • @tonyperry6702

    @tonyperry6702

    7 жыл бұрын

    Oh yeah, I was going to use three of the aforementioned LEDs. Thanks.

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    bigpops For three LEDs in series, you'd need at least 2000uF, assuming a ripple of better than 3.5Vp-p. Don't forget you'll need current limiting too

  • @tonyperry6702

    @tonyperry6702

    7 жыл бұрын

    If I place the resistors in parallel, assuming there is enough voltage present at the supply, and add some low ohm power resistors, will I still need a current limiting circuit?

  • @jaywalt1311
    @jaywalt13118 жыл бұрын

    Its probably your accent, but what are "book capacitors"? I'm sure I'm just not hearing you right. I'm assuming you mean filter capacitors but I'm just not sure of the word you are using. Thanks for the review. Can you do one of a scope? I've seen those kit scopes on eBay but they are probably garbage. 200khz bandwidth too (would probably be fine for me since the fastest thing I think I would probe is a smps).

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +Jay Walt Bulk capacitors :-) I'll see what I can do

  • @jaywalt1311

    @jaywalt1311

    8 жыл бұрын

    +SDG Electronics I thought that's what you were saying I've just never heard them called that before. Cool about the scope. They're only like $20 but its a diy kit with a decent amount of soldering..

  • @david_pilling
    @david_pilling8 жыл бұрын

    I recently got one of these from Banggood - 40 uA leakage current to earth.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +David Pilling It appears from photos that there are a couple of different power supplies used in these units. IMO the outputs should be completely floating or tied to mains earth.

  • @david_pilling

    @david_pilling

    8 жыл бұрын

    +SDG Electronics I agree. I'm looking to modify my unit. It came with a "death 'o' dapter" plus 2 pin plug, and at the very least I will put a three pin IEC socket on the back panel. Someone on the EEV blog forum suggested using a capacitor to earth, which would short the main leakage out but allow a DC voltage difference. I expect there is no escape from an old fashioned mains frequency transformer power supply.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +David Pilling Yes the cap to earth can work. I'm going to use a pain old transformer though. Video soon

  • @anonimuso
    @anonimuso4 жыл бұрын

    You used the term 'new players'. You must be friends with Dave. :)

  • @orcasea59
    @orcasea595 жыл бұрын

    Are you (or any viewers) aware if the manufacturer has addressed the power supply issues with this model in the almost three years since this video was made? I am a beginner using Arduino/low power components, and I certainly don't want damage anything by making any Newb mistakes...

  • @sdgelectronics

    @sdgelectronics

    5 жыл бұрын

    The new models don't have the same high leakage, but I'd still recommend making some modifications. The simplest is to replace the 2 pin connector with a 3 pin connector for the mains supply and connecting the earth pin to the chassis/electronics 0V inside the unit

  • @orcasea59

    @orcasea59

    5 жыл бұрын

    @@sdgelectronics Thanks for the response. Yes, that looks like the best approach. I figure i will just mount a ground stud on the back and put a grounding point on my power strip, that way I avoid mangling the case too much and I need an alternate ground point, anyway, for other things. Thanks for the videos!

  • @michaeld9682
    @michaeld96827 жыл бұрын

    Did you power it from the wall without added isolation transformer? In other words, could I plug my scope bnc channel 1 to the channel 1 of this signal generator? (with both scope and signal generator powered by mains with no extra isolation transformer)

  • @sdgelectronics

    @sdgelectronics

    7 жыл бұрын

    Yes, you can do that no problems.

  • @michaeld9682

    @michaeld9682

    7 жыл бұрын

    I order one. I love it. So far I have had no problem testing wall connected circuits with my scope with input signals from this sig gen. I think the main thing to watch out for, is any connection with high voltage potential, that has a direct short to ground. As this would cause high current to flow

  • @michaeld9682

    @michaeld9682

    7 жыл бұрын

    Just ensure whatever pin connections to the Arduino, will not exceed Arduino pin specs for amps being pulled, and conversely, will not exceed the max voltage. So for example, if you connect your sig gen to an analog input pin on Arduino, just look at the specs for the Arduino pin first. They have good documentation.

  • @LReBe7
    @LReBe78 жыл бұрын

    I liked the review, but I had an absolute facepalm moment when you said you aren't sure why they put that 50 ohm recommendation in. Go look up characteristic impedance, impedance matching and standing waves.

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    I fully understand impedance matching and transmission line theory, but the output voltage on the LCD is incorrect into a 50R load. Most signal generators you specify if your driving a Hi-Z or 50R load and the amplitude is adjusted accordingly yet this is set up for a Hi-Z load not a 50 ohm load, hence my comment...

  • @valmordumke5160
    @valmordumke51605 жыл бұрын

    Generator of Functions everyone put the generated direct connected in the ociloscope more nobody put or knows how to use the generator in test in the circuit ??????? just showing the generator on the oscilloscope is of no use as this anyone knows how to do

  • @MartinPHE
    @MartinPHE8 жыл бұрын

    sadly can't watch HD

  • @sdgelectronics

    @sdgelectronics

    8 жыл бұрын

    +Martin P KZread is still processing the other resolutions. I'd imagine it'll be complete in a few hours. Thanks!

  • @MartinPHE

    @MartinPHE

    8 жыл бұрын

    +SDG Electronics , finally yep

  • @mrnickbig1
    @mrnickbig17 жыл бұрын

    Those are called "alligator clips".

  • @Zeric1

    @Zeric1

    6 жыл бұрын

    English naming conventions can vary by country (an "elevator" in the USA would be called a "lift" in GB).

  • @Jayshnay
    @Jayshnay4 жыл бұрын

    Wait what the hell? How could it just float to close to 95V? Isn't that incredibly dangerous? Why are you so casual about it? It's supposed to be about 10v and it's almost an order of magnitude larger. Why is this?

  • @charlessmith833
    @charlessmith8337 жыл бұрын

    The manuals are written in Chinglish. You always have to guess the meaning of the poor grammar. Is there anybody in all of China capable of writing in understandable English?

  • @ableutopia2721
    @ableutopia27214 жыл бұрын

    Obviously biased for a free gadget. Far too much talk, little useful information. Lame review.

  • @ableutopia2721

    @ableutopia2721

    4 жыл бұрын

    Shut up and get a job ffs!

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