Thanks Peter for the great Video,you greatly expanded my understanding of SMPS . Your a great teacher !

@TRXLab

7 жыл бұрын

Thanks for the kind words Cheers

That was a fantastic detailed deep analysis on this particular SMPS Peter!Thanks for all your effort here.. Much appreciated.Tom

@TRXLab

8 жыл бұрын

+AntiqueRadioandTV Hi Tom, thanks for your feed-back, always glad that you like it! Cheers

Peter, Great comeback and explanation on the smps. Well done. I enjoyed it. Thanks for taking the time to explain this circuit. Thumbs up from me.

@TRXLab

8 жыл бұрын

+The Radio Shop Hi Buddy, thanks you very much! Yeah it is an exiting project and we have more and more this kind of psu's in our radios.. Take care and thanks for stopping by 73

Thank you! Especially for your excellent explanation of error amplifiers. I imagine that regulators in series regulated supplies error amplifiers. Being that you work with voltages down to .0001, precise components are a must at this sensitivity! Great job!🙌

@W1RMD

4 жыл бұрын

I also like the way you explain things again and again so my brain can absorb it!

Hi , you have made a great job by explaining how works SMPS theoretically and practically . Can you make a complement video ? by simulating what can happen with the SMPS when for example according to your schematic: 1- UC3842 is not getting power supply 2- the transistor in the primary side get short circuit 3-the optocouplor is dead 4-one or some transistor in the secondary side get short circuit 5- rectifers diode in in the secondary side get short circuit.............ect the idea for every case will be to show in the oscilloscope or voltmeter what you are getting in the test point of the schematic. thank

Great always look forward to you great videos thank you Peter

@TRXLab

8 жыл бұрын

+DENNIS N Thank you Dennis for watching and for always commenting! Have a nice day Cheers

Great Peter, another great lesson. Thank you very much dear friend.

@TRXLab

8 жыл бұрын

+Pasquale IW0HEX Thank you Pasquale! 73

Peter, good interesting video as always. Thanks for sharing. Best wishes.

@TRXLab

8 жыл бұрын

+rupert handford Thanks for watching Rupert! 73

Hi Peter, loved the video, very interesting seeing how excessive load shuts down the drive IC via the 431 and opto coupler. Thank you. 73's

@TRXLab

8 жыл бұрын

+Bob Mellor Hi Bob no problem Thanks for stopping by. 73

Hi, do you have electrical scheme of the power source cooler master 550 for download? Many thanks for the tutorial.

Great job ! Have a good one !

@TRXLab

8 жыл бұрын

Thanks for feed-back. Cheers

Really good follow up & clearly explained.

@TRXLab

8 жыл бұрын

+Andy Gallacher Again thank you Andy!

@heinzergrinder1901

8 жыл бұрын

Hi , you have made a great job by explaining how works SMPS theoretically and practically . Can you make a complement video ? by simulating what can happen with the SMPS when for example according to your schematic: 1- UC3842 is not getting power supply 2- the transistor in the primary side get short circuit 3-the optocouplor is dead 4-one or some transistor in the secondary side get short circuit 5- rectifers diode in in the secondary side get short circuit.............ect the idea for every case will be to show in the oscilloscope or voltmeter what you are getting in the test point of the schematic. thank

Thanks for this! More more more please!

@TRXLab

8 жыл бұрын

+Mitchell Smith (KB3GKC) LOL I'll do my best Mitchell :^) 73

great video from great teacher

@TRXLab

7 жыл бұрын

Thank you very much ! Cheers

Yes, a SMPS is a "vast improvement" over those pesky linear supplies :O) Ok. Just having fun. I'll show myself out! (p.s. Thank you for the the GR8T content! The check is in the mail)

Very, very, very good video.

@TRXLab

2 жыл бұрын

Thank you Jim

well done . nice explanation but i have a question the ic shuted down due to the over voltage of 5 v output is this true because the load will decrease the 12 v output and so the tl431 will conduct due to the rising of 5v output as increasing the duty cycle to compensate the heave load ,is it true?

Great follow up Mr.P :^)

@TRXLab

8 жыл бұрын

+Mr Carlson's Lab Thank you Paul!

@MrCarlsonsLab

8 жыл бұрын

Any time Peter!

Thanks for the video. I think both pin 2 and 3 can shutdown the oscillation. pin 3 will shutdown the oscillation when somehow the photo coupler fails, i.e. the LED in the photo coupler is dead, the controler thinks that there is no enough voltage on the output, so continues to pump the output. In this case, pin 3 will reach 1v and shutdown the oscillation. Also, it would be interesting to hook up a scope to see how all 4 voltages change simultaneously.

I have an LCD monitor and its power suppy its bad i changed some capacitors and the LCD worked for some days.Now its not turing on again and the capacitors all seem ok any suggestions?

Sir vary informAtion vidio l vary like it thankyou vary much

Good job

Is the complete circuit a flyback or forward converter?

thank you very much can you put the circuit diagram in discribtion under

Very nice video you make, you are very good to explain. I have questions when I check the data sheet. Current sense is max 1,1 V and type 1,0 is type the trigger point?

Nice job Peter, thanks!

@TRXLab

8 жыл бұрын

+Robert Calk Jr. Hi Robert, thanks for always commenting on my videos! Very much appreciated! 73

@robertcalkjr.8325

8 жыл бұрын

+TRXBench My pleasure Peter. Even if I don't have questions or comments to make, I can at least say thanks for your hard work.

Thanks

Superb video, Peter! With names like Henrich, and Gorzny, in my family, I love the Germans, their practicality, and their accent. I've lost track of how many Germans named "Peter" I have worked for. Hans was a pretty good old fellow too. I worked for some Czechs a few times too, and some of them actually did make me want to attack them. They loved taking dangerously stupid shortcuts. Engl Amps puts dozens of mistakes in their schematics. Half the parts don't even have the values shown! They have vias to nowhere. They are just terrible, and it's a German company. I can still fix them, but........ I am better off not looking at their schematics and just working from purely a theory of operation basis, and what I have in the box in front of me at the time. 73s

@TRXLab

7 жыл бұрын

LOL yeah very nice :^) Thanks for watching and comment! All the best and 73

Tq sir..i learned a lot from u...now i have problem about beckhoff IPC power supply...and dont have a schematic about that smps...do u know where can find that schematic?

What could be the reason of power fluctuations? Power fluctuates from 2volt to 12 volt.

good job

@TRXLab

6 жыл бұрын

Thanks for watching Cheers

Ausgezeichnet! Very interesting follow up to your previous explanation of SMPS's and the protection circuit. Thank you. The only question I have is the ability of your DMM to accurately measure AC at such a high frequency. Is the Agilent rated at 60Khz or higher? Most DMM's are rated for AC at fequencies less than 1Khz and sinusoidal not pulsed. Having said that I believe that if the readings are incorrect they are high rather than low as the meter tries to average out the more complex waveform. So in this case I think your point is still proved they do not read above 1 volt.

@TRXLab

2 жыл бұрын

The AC Bandwidth is 100KHZ

@bofor3948

2 жыл бұрын

@@TRXLab Thanks for the reply. I am a bit behind the curve (retired a number of years) and need to update my kit. My old Fluke DMM is not so capable.

Thank you again sir for additional deep explanation. I am now going crazy with this power supply. It is very complicated. For my reference sir where I can find any schematic diagram of SMPS power supply. Can you please tell me where?

@TRXLab

6 жыл бұрын

Yes a smps can be very tricky. Study carefully step by step and you will be successful. All the best and cheers

Nice

@TRXLab

5 жыл бұрын

thanks for feed-back

Bei Minute 15:33 sieht man ein Rubidium Standard auf's "µHz" genau. Koenntest Du bitte mal erklaeren wie Du auf diesen Wert gekommen bist ? Der PLL kann das doch garnicht so weit runter teilen und gemessen womit ? Wuerde mich doch wirklich mal interessieren wie man auf solche Werte kommt. Immerhin bewegst Du Dich damit in einem Bereich ppq (parts per quadrillion) was 'ne ziemliche Hausnummer ist.

very good

@TRXLab

7 жыл бұрын

Thank you 73

Sir vary informAtion vidio l vary like it thankyou vary much