As we had some questions on the function of the protection circuits I decided to make a deep dive session to proof the function. This video might to be too specific and may be therefore not interesting for all of you..
Пікірлер: 64
@kardeef333177 жыл бұрын
Thanks Peter for the great Video,you greatly expanded my understanding of SMPS . Your a great teacher !
@TRXLab7 жыл бұрын
Thanks for the kind words Cheers
@W1RMD4 жыл бұрын
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!🙌
@W1RMD4 жыл бұрын
I also like the way you explain things again and again so my brain can absorb it!
@heinzergrinder19018 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
@TheRadioShop8 жыл бұрын
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.
@TRXLab8 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
@AntiqueRadioandTV8 жыл бұрын
That was a fantastic detailed deep analysis on this particular SMPS Peter!Thanks for all your effort here.. Much appreciated.Tom
@TRXLab8 жыл бұрын
+AntiqueRadioandTV Hi Tom, thanks for your feed-back, always glad that you like it! Cheers
@BobMellor19548 жыл бұрын
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
@TRXLab8 жыл бұрын
+Bob Mellor Hi Bob no problem Thanks for stopping by. 73
@iw0hex8 жыл бұрын
Great Peter, another great lesson. Thank you very much dear friend.
@TRXLab8 жыл бұрын
+Pasquale IW0HEX Thank you Pasquale! 73
@dennisqwertyuiop8 жыл бұрын
Great always look forward to you great videos thank you Peter
@TRXLab8 жыл бұрын
+DENNIS N Thank you Dennis for watching and for always commenting! Have a nice day Cheers
@MrCarlsonsLab8 жыл бұрын
Great follow up Mr.P :^)
@TRXLab8 жыл бұрын
+Mr Carlson's Lab Thank you Paul!
@MrCarlsonsLab8 жыл бұрын
Any time Peter!
@RupertHandford8 жыл бұрын
Peter, good interesting video as always. Thanks for sharing. Best wishes.
@TRXLab8 жыл бұрын
+rupert handford Thanks for watching Rupert! 73
@atestchannel82978 жыл бұрын
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.
@ovalwingnut Жыл бұрын
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)
@andyg89668 жыл бұрын
Really good follow up & clearly explained.
@TRXLab8 жыл бұрын
+Andy Gallacher Again thank you Andy!
@heinzergrinder19018 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
@ammaralyasiri41917 жыл бұрын
thank you very much can you put the circuit diagram in discribtion under
@cbataquim7 жыл бұрын
Hi, do you have electrical scheme of the power source cooler master 550 for download? Many thanks for the tutorial.
@MuhammadYaseen-in8vz3 жыл бұрын
Sir vary informAtion vidio l vary like it thankyou vary much
@kennethkristensen55372 жыл бұрын
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?
@jimschiltz53432 жыл бұрын
Very, very, very good video.
@TRXLab2 жыл бұрын
Thank you Jim
@bofor39482 жыл бұрын
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.
@TRXLab2 жыл бұрын
The AC Bandwidth is 100KHZ
@bofor39482 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.
@livewire24048 жыл бұрын
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?
@Satchmoeddie7 жыл бұрын
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
@TRXLab7 жыл бұрын
LOL yeah very nice :^) Thanks for watching and comment! All the best and 73
@ahmadaltaweel49817 жыл бұрын
great video from great teacher
@TRXLab7 жыл бұрын
Thank you very much ! Cheers
@riloariichoariicho8844 жыл бұрын
What could be the reason of power fluctuations? Power fluctuates from 2volt to 12 volt.
@knighthh6 жыл бұрын
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?
@PSPS4378 жыл бұрын
Is the complete circuit a flyback or forward converter?
@Millstone_Firewood8 жыл бұрын
Thanks for this! More more more please!
@TRXLab8 жыл бұрын
+Mitchell Smith (KB3GKC) LOL I'll do my best Mitchell :^) 73
@dixsusu8 жыл бұрын
Great job ! Have a good one !
@TRXLab8 жыл бұрын
Thanks for feed-back. Cheers
@robertcalkjr.83258 жыл бұрын
Nice job Peter, thanks!
@TRXLab8 жыл бұрын
+Robert Calk Jr. Hi Robert, thanks for always commenting on my videos! Very much appreciated! 73
@robertcalkjr.83258 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.
@jiwaelectro5 жыл бұрын
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?
@radwandiesca32156 жыл бұрын
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?
@TRXLab6 жыл бұрын
Yes a smps can be very tricky. Study carefully step by step and you will be successful. All the best and cheers
@jugnu3612 жыл бұрын
Thanks
@gunnarskutle78445 жыл бұрын
Good job
@Burkhardj8 жыл бұрын
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.
@jameskinuthia76056 жыл бұрын
good job
@TRXLab6 жыл бұрын
Thanks for watching Cheers
@r.kelectronics61645 жыл бұрын
Nice
@TRXLab5 жыл бұрын
thanks for feed-back
@jhorieboif50167 жыл бұрын
very good
@TRXLab7 жыл бұрын
Thank you 73
@MuhammadYaseen-in8vz3 жыл бұрын
Sir vary informAtion vidio l vary like it thankyou vary much