I'm mainly an audio electronics channel but my top two videos are about LED bulbs. Perhaps I should change to the LED Bulb Channel.😀

@T2D.SteveArcs

Жыл бұрын

😂😂

@MichaelBeeny

Жыл бұрын

There is already a channel about LED circuits which shows the same basic item every 4/5 days. He has more viewers than you and I together. May be that might be a good idea?

@jakubczajka4275

Жыл бұрын

Video about noisy bulb was quite interesting.

@jakubczajka4275

Жыл бұрын

@@MichaelBeeny Is your amplifier based on MX50s still working? Maybe I should get 3 pairs of them and start saving money for DSP and speakers...

@MichaelBeeny

Жыл бұрын

@@jakubczajka4275 I only built 2 using the MX50s, sold them both. As far as I know they are still working well.

I watched this video about a month ago, and tonight I ordered one of these scopes. Thanks for a very helpful and straightforward run through. I bought it after buying a Roland S1 Tweaker Synth, which has some great innovative wave modifying features, but only a four character seven segment display, and lots of multifunction illuminated buttons. The KZread reviewer I watched had screen in screen of an oscilloscope, which really helps to learn exactly what the synth engine is doing. Also, I’m building an audio device, so it’s great to hear that this scope is suitable for basic experiments and debugging audio circuits. Liked and subscribed.

I like the idea of this, its portable, and electrically isolated. which are 2 things I really need and its has a large screen, it costs £120. People critiquing it seem to compare it with scopes costs 5x as much, without a good reason.

Thanks for doing the review on this. I have had one of these for a little over a year now. I keep it in my tool case in the car for field service. The battery seems to hold a charge for a very long time. For quick measurements and for verifying the presence of a signal, this little scope works well. I did, however, find one problem with it. If you need to capture a single waveform, you are limited to the length of the waveform you can capture. We sometimes have to capture a waveform that is upwards of 1 second long. This scope can't do it. If you set the trigger to normal mode and then set the time base to anything 100mS/division or longer, the scope will switch the trigger to auto mode and shade out the option for normal trigger. I think it is because of memory limitations. Other than that, it works great, especially when you don't want to drag the big scope into the worksite ;) Thanks again!

I really wanted an old analog scope and got a 90's 20MHZ Kenwood couple years back. Maybe better for learning, but these cheap DSO's offer tons of useful features, tiny footprint, isolated and its portable. EDIT: Just saw the price, amazing deal for beginners.

@treadmillrepair754

Жыл бұрын

Repair audio with this thing is imposible, the most big problem is the input sensitivity 50mv minimun. If yoy have some background noise is imposible to catch. The Owon HDS272s two channel scope is better in every posible way, with 10mv input sensivity. I have two Flukes and one Agilent inclusive.

This model is currently blanketing eBay. Tempting for the price. Thanks for the add’l context!

I think for the price, it's a pretty good oscilloscope. Probes includes, responsive touchscreen, very readable screen. For beginners and even for more advanced users who just quickly look a a signal. Yeah al in al a decent scope! I already have a scope, but I would definitely consider this I was looking for one. And if you are just doing audio.... even better! Thanks for the review!

John I totally agree. I actually own a DSO and the JYEtech DSO150 it was the Kit version. A 5 year Hantek unit.

I bought one of these a year or so ago, and have not regretted it. My interest is mostly in RF, and I do very little audio work. The audio work I do is over a narrow bandwidth. So I got rid of my 4ch 200Mhz scope (I donated it to a local club) that took up a lot of space and bought this instead. It does all I needed and so much more. Btw, a scope rated to 100Mhz doesn't mean it works there. A 100Mhz scope has a working bandwidth of about 1/2 to 75 %the rating at best. At 100Mhz the amplitude is typical rolled of by a minimum of 3db.

Hello 🙋‍♂ Greetings from Japan to you🗾 This is a small, light and handy oscilloscope This oscilloscope is a bargain at 166$ Thanks for the great review video 😊🙇👉🔔

I purchased a DSO 1308 DIY Oscilloscope kit from an Amazon return center for $4.00 just because it was only $4.00 It was fun building it. Verifying all the correct resistor values, soldering it all together. I've never used one and not really sure what to use it for. I've been following your channel since 2016 when I built my 1st Altiods tin audio amp and speaker with an LM386 chip. Made several BT speakers, then moved on to learning Arduino and programming onto Wemos D1 Mini ESP8266. Then augmented that project with a Raspberry Pi Zero W and Mosquitto MQTT. I still have no idea what to use an oscilloscope for or how to properly take readings from it. I just happened to see this video and thought hmmmm maybe should learn some basic oscilliscope "stuff".

I was looking at the AESwave uScope but this one with two channel and touchscreen seems like a no brainer!

One thing going for this is a nice big display. A lot of scopes have a much smaller display.

Interesting demo.

Like dealing with people, it takes me a long time to trust an oscilloscope - for low frequencies, I still go back to a CRT scope and an independent counter.

I bought the same scope based on review. Sorry. It is NOT a 100MHz, 1Gsa/s scope, the rise time on 300ps signal shows 10ns (means ~25MHz bandwidth), the minimum timebase setting is 10ns/div, and it looks that all waveforms on

Ideal for working on audio valve amps where you need the isolation and the supplied 100X probe.

@MichaelBeeny

Жыл бұрын

Also good for many class D with floating outputs.

@FindLiberty

Жыл бұрын

Yea, Use TWO x100 probes and invert one channel for the HV isolation that does not require a direct chassis ground connection - can't beat a CRT Scope with that combination and high impedance "light touch" that lets you see exactly what's going on with those tube/valve grids.

Hi John, Thanks for the review. I bought an inexpensive Chinese audio scope the other day to use in lieu of my analog BK Precision 1474. I've been building pick-ups and preamps to go along with my building of acoustic stringed instrument hobby taken up in retirement. I ran into something recently that might interest you. I bought a $7 two channel preamp with three bands of tone control built in to the board along with a pair of 5532 op-amps. The board runs on a dual power supply meaning it expects or needs -voltage, virtual ground, + voltage to power on. No surprise here and to test it I used a pair of large 12 volt batteries in series and pulled virtual ground from the plus/minus junction. I wanted to use the preamp after having built an enclosure without using big batteries in series so I built a votage divider out of a pair of 2.2K resistors and a pair of 220 micro farad electrolytic capacitors. All hell broke out when I used the voltage divider. Why? It totally destroyed the clean test signals I input by distorting them into something close to a square wave that was anything but pretty to look at. I then ordered a dual power converter module off EBay but as I wait I decided to try an idea. The idea was, I believed the guts of a cigarette lighter style cell phone charger is just a DC to DC Buck Converter. So, how about gutting two chargers and placing the two boards in series. The idea worked like a charm and gave me -5 volts, virtual ground, +5 volts and ran the board without a hitch. On the other hand, what is up with the voltage divider. Are the capacitors inducing an AC signal that is corrupting the test signal or is the board just cursed by the wizard of Electronics?? Thanks in advance for insight on the issue of the mucked up signal.....

@JohnAudioTech

Жыл бұрын

Check the virtual supply voltage while in use. I suspect that it is getting unbalanced. It will only work properly if the load is equal on both rails.

Thanks for reviewing that. Perhaps it's time for me to move away from my tube Heathkit oscilloscope and HP sine wave generator!

Purchased one about a year ago. I'd buy it again.

TechCorner has a video showing 80mhz both channels driven simultaneously at the 3db dropout. Many signal generators themselves drop amplitude at higher frequencies but the scope is then blamed.

Big fan of the Hantek scopes, very affordable, but you need a PC/laptop. I use a 8 channel model for automotive diag, and I have a 2 channel model for home use.

Eddie Aho is so nice and generous to send the Siglent.

@jstro-hobbytech

27 күн бұрын

Eddie is amazing and a great friend. Some people are not do thankful as they ought be.

Any schematics of your tiny RF amplifier setup ? Just curious to see how strong the signal gains..

Hello. Would you recommended for use in car repair? Thank you.

Looks nice, I'm going to buy it next christmas for $50

@educationaltvshows9950

3 ай бұрын

Where so cheap 1013?

Any Roll mode on this, ie moves smoothly from right to left without any triggering events ?

Dave on EEVBlog did a fairly detailed review of a slightly different version (probe connectors protrude more) of this scope, and found that its max sampling rate is 200MHz, not the claimed 1GHz. He and others have also found that the bandwidth is around 25-30MHz instead of the claimed 100MHz. I'm not saying not to buy this scope - the battery powered portability is especially attractive - but buyers should be aware of these misrepresentations.

does this oscilloscope have hd screen? it would have been nice to see more with hd screens and more eb 60 hz screens!

Hello to you, Thank you for this video it helps us to see clearly, I have a question for you, I would like to check components like transistor, diode can this scope support the x-y function, thank you in advance for your answer .

@JohnAudioTech

10 ай бұрын

Yes, It was shown in the video.

If you already know what you doing and the expected signals as seen on an analog scope, these digital scopes are great; just tweak the settings a little bit. They present traps for new players though (IMO). Sometimes they display things that are not even there or miss things that are there; pressing the "Auto" button might not help. That's been my experience on the early low end models...

@T2D.SteveArcs

Жыл бұрын

They look alright for the price.. I might buy one to use on my monster Vacuum tube Tesla coils, its nice that its battery powered, perfect for hv , I wonder what the input impedance and capacitance is🤔

@1pcfred

Жыл бұрын

Yeah DSOs can lie. At best what a DSO is doing is trickery and fabrication. But the high end ones do what they do rather well. The GHz sample rate seems to be the barrier with cheap DSOs.

@T2D.SteveArcs

Жыл бұрын

@@1pcfred even those are blind for a large percentage of time, ive got both, cro and dso's . My favourite cro is my tektronix 2465 😍

@FindLiberty

Жыл бұрын

@@T2D.SteveArcs I loved my 465 and miss it... )-;

@T2D.SteveArcs

Жыл бұрын

@@FindLiberty oh is that one of the ones with plug ins 🤔

Had the opportunity to use one of these, the worst spec is the 50mV/div with x1 probe. If you use x10 probe the minimum vertical range is 500mV/div! So, for small analog signals, it is almost useless. Another problem is the triggering circuit: it just don't have one! Basically, the trigger comes from digitalized signal, so, many times, if you change the vertical resolution or even if you scroll down or up the signal and the trigger level goes out of screen, it looses sync. So... it is not a good oscilloscope, but it is portable and battery operated, so, it has some uses...

Why not use transistors instead of relays?

Does it measure Total Harmonic Distortion?

Is it safe to measure Main voltages with this scope?

Has anybody the electronic schematic of this oscilloscope? please share.

mine came without a 100x probe (not that I think I need it)

Will the cursors and/or the measurements work with the FFT?

@JohnAudioTech

Жыл бұрын

I doubt it will, but I'll have to try.

@lolilollolilol7773

Жыл бұрын

@@JohnAudioTech I mean the FFT function would be next to useless if you can't get the frequencies of the peaks.

I really disliked the cheap plastic fold-out stand. I was always getting glare from the scope angled towards the ceiling. I decided to modify my fold-out stand with a couple of small O-rings. I put the O-rings over the plastic hinge pins of the fold-out stand. This sort of worked, but when I installed a small piece of 4mm plastic on the other side of the stand, it wedged the hinge O-ring tighter and provided the friction that I was looking for. The change is like night and day. I used to have a flimsy stand and now I have a stand that stays in place where ever I position it. No more glare in my eyes.

@RayceVR

4 ай бұрын

Can you post a video of it on your channel? I’m really interested on how that looks since I can’t visualize it.

@joewoodchuck3824

3 ай бұрын

Glare can be caused by your lighting position.

I think you'll find these units are NOT ground isolated, nor do some of them even have a battery.... Test the continuity between the USB power socket Ground and the probe inputs, and you'll find they all conduct to Ground. Something to be aware of when using the USB adapter....

Digilent Analog Discovery is more expensive, but a really good performer.

@jakubczajka4275

Жыл бұрын

Do you have one? I think it has a bit small memory. Do you think it is a problem?

@micomrkaic

Жыл бұрын

@@jakubczajka4275 I have one. Did not encounter memory problems, but I never pushed it hard.

@jakubczajka4275

Жыл бұрын

​@@micomrkaic Thank you! Analog Discovery 2 is limited to 30 MHz only, but it promises 14 bit resolution. After all, I only need a scope, to see if my amp is not oscillating or if 24.576 MHz is present. Thanks again!

@lolilollolilol7773

Жыл бұрын

@@jakubczajka4275 Worse than that, it's a 100MS/s aka 10MHz scope and only one channel. For $429, it's way overpriced even if it comes with a rudimentary logic analyzer ! Plus it's highly inconvenient. At that price, you can get a real bench 2 channels 100MHz 1Gs/s bench top scope + a separate logic analyzer or power supply. Or this 2 channels scope + a basic logic analyzer or signal generator + a real power supply. The Digilent Analog Discovery shouldn't be sold more than $200 as it has a lower bandwidth and is less convenient than this chinese scope. The only thing it has for it is the logic analyzer, but I'm not even sure it's a good one.

@jakubczajka4275

Жыл бұрын

​@@lolilollolilol7773 Thx, I think I will go for 100-200MHz Rigol or Siglent. There are affordable 12-bit Owons but I need to find out if 12-bits are going to be really useful for me.

I got same scope but my menu is in chinese can you share to me how to set the menu to english. Thanks

@mikaelhaji2555

5 ай бұрын

did you figure out how to change it?

@melb7648

5 ай бұрын

@@mikaelhaji2555 yes the seller send me a new firmware to update the unit.

Student here. Are there oscilloscopes that have a built in waveform generator? If so, does this have this feature?

@JohnAudioTech

22 күн бұрын

Yes there are, but this one does not.

@LALontoc

22 күн бұрын

@@JohnAudioTechThank you!

so the voltage +/- are reversed like a zoom feature, call me old fashioned and so not one of cool kids but if I was on 5v/div and pressed + I would expect 10v not 2v @ 06:23

@SeanPorio

Жыл бұрын

I was thinking the same thing, it was kind of ambiguous what it was going to do before he pressed it

@lezbriddon

Жыл бұрын

@@SeanPorio this is what happens when software techs design for engineering techs.....

@SeanPorio

Жыл бұрын

That being said, I’m sure I’d get used to it after using it a couple times. Would have to get used to the opposite case anyway.

@englishrupe01

Жыл бұрын

True....but i guess they mean + refers to zoom.

@lezbriddon

Жыл бұрын

@@englishrupe01 agreed, but it's against convention that "v+" means volts and increase. Would you have a PSU working any other way? This creates a situation where a button marked with v+ has 2 different meanings depending on what equipment it's on.... Imagine a signal generator where + decreased frequency because they are using it to increase the wavelength......

Do they come with a protective cover or box? or protective rubber you find on multimeters?

@JohnAudioTech

Жыл бұрын

That's one thing I forgot to mention. I wish it came with a zippered, padded carry case.

6:02 That's "lizza-zhoo." :)

Price

@englishrupe01

Жыл бұрын

Google

Wow, a review from somebody who hasn't made up their mind already. I guess when one has paid much more in the past the newer and way less expensive unit that may be even better in some ways doesn't sit well.

This scope is pretty useless beyond 35MHz. But for audio that should be fine.

In contrast, Micsig is CORRECTLY rating their scopes BW and other parameters. Test equipment "lies" are worse than manufacturers lies.

Let me add, it works better once you learn how to use a 'scope with no knobs or buttons. Ron W4BIN

If they advertised this scope for what it's really capable of no one would buy it. Bandwidth is 10X what an instrument is capable of reliably displaying. So a "100 MHz scope" is good for 10 MHz. Up to 100 MHz it's going to do something but not really what you want. In the upper range of their bandwidth cheap DSOs are going to display a sine wave regardless of what the input signal looks like. So testing them with a sine wave is less than informative. Square wave? Sine wave! In the immortal words of John Belushi, Cheeseburger, cheeseburger, cheeseburger. That's all you're going to get. Oh, and Pepsi, no Coke.

@jakubczajka4275

Жыл бұрын

As far as I know "100MHz scope" means that it is supposed to be capable of displaying 100MHz sinewave at -3dB. Regardless of price.

@carlfranz6805

Жыл бұрын

​@@jakubczajka4275 yep. That and $1.50 will get you a small coffee at Starbucks. Sigh. On the cheaper ones the chipset just doesn't have the speed . Collecting the samples and displaying them is more processing then you'd think.

@jakubczajka4275

Жыл бұрын

@@carlfranz6805 I agree that cheapest scopes are not meeting the specification. I was trying to say that as far as I remember XXX MHz specification is about sinewave and not any other waveform.

@1pcfred

Жыл бұрын

@@jakubczajka4275 as far as I know when you exceed the sample rate of any DSO all they display is a sine wave. That's the best they can extrapolate. They seem to get the frequency right though. So you'll know there's a waveform there but won't actually know its true characteristics. So it is information just not detailed info.

@carlfranz6805

Жыл бұрын

@@jakubczajka4275 Sorry, my response was poorly put. I was agreeing with you and adding additional info. My apologies.

Sorry, I prefer the "real thing" with less menu's but buttons.

I got one of those, did not work at all, probably a lemon.

Budget scopes are getting better, but must be carefull what you buy, many are just toys and not very useful(low speed, bad interface, etc). edit/ 10:02 That is just horrible, make this scope useless for many things, it can measure the ripples on power supply or small signals. This makes it a big NO-NO for me, and wouldn't recommend it.

@germanjohn5626

Жыл бұрын

You can't expect Ferrari performance from a Volkswagen beetle. It works well enough for beginners and then some.

@treadmillrepair754

Жыл бұрын

Minimun input sensivity is 50mv, useless. For audio minimun would be 10mv o 5mv preferably.

notice that it doesn't have the best screens! a bit too slow yes. a lot of the cheap ones tend not to have the very best screen like dab radio players or cheap LCR meters and mini ociliscopes tend to have horrible bad screen type

@JohnAudioTech

Жыл бұрын

Not the greatest at 800x480, but bright and clear.

@ford1546

Жыл бұрын

@@JohnAudioTech The problem with many screens especially on cheap things like LCR meters. Transistor tester. DAB radio. mp3 player module and other similar things is that the screen has an incredibly bad viewing angle and you have to look straight at it. Then the light reflects inside between the layers inside the screen and you get an unpleasant effect. Then the image on these screens is very slow. Otherwise good product is ruined by a bad screen!

Liss'- a- jew. Accent on Liss

You are really later to this party I've got 2 of them n had em for 3yrs, I use them for car diag work there not great just ok to about 30Mhz & definitely not 1Gs/s. I'm an electronics tech & mechanic of some 40yrs.

@SlavisaNedic

7 ай бұрын

#preston963 Can it capture high speed can bus in car's?Ty in advance

@preston963

7 ай бұрын

@@SlavisaNedic HS can bus isn't anywhere near 30Mhz it's only around 1 to 15 Mbs/sec so yes of course it can but doesn't have a very big buffer, I use my Picoscope for jobs where I need a big capture.