| Electronics > Beginners |
| TL431 linear power supply |
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| taydin:
--- Quote from: blackdog on December 19, 2018, 09:48:44 am ---Every time I have to laugh a lot about the standard errors that are made at Linear power supply circuits here on the forum... --- End quote --- --- Quote from: blackdog on December 19, 2018, 09:48:44 am ---Why let's take the last schemes, C8 100uF, and R13 100 Ohm, you must be jokink... --- End quote --- --- Quote from: blackdog on December 19, 2018, 09:48:44 am ---If you ignore this, you will always start crying. :box: :-DD --- End quote --- AND after showing complete disregard to the efforts of others trying to come up with a good design, you say: --- Quote from: blackdog on December 19, 2018, 09:48:44 am ---Kind regards, Blackdog --- End quote --- Now THAT's what is funny :-DD You are making some valid points, but because of your terrible attitude, nobody really notices them and you lose credibility... |
| iMo:
The fact is when the control loop is "slow" an abrupt load change at the output will propagate "slowish". Thus it will not track properly. If the user not1xor1 made the LTSpice source public, we could have played with it and finalize the efforts of the contributors.. |
| blackdog:
Hi taydin, I have no problems with your opinion, because you are entitled to it. I hope that my remarks shock it this topic a little up. :) If you are aware of my technical remarks and you know that they are correct, why didn't you help the people in this topic? On this forum you can find a lot of information on how to make a good power supply and dummy load circuit. But I get the impression that people are getting more and more lazy while the info with a little search is easy to find. That's why I have to laugh and sometimes maybe cry a bit... I will also keep an eye on the topic en help if necessary. Here is a link about stability, there are more in this series, change the last digit in the link. https://training.ti.com/ti-precision-labs-op-amps-stability-4 And some PDF's in a zip file with info of TI about opamp stability www.bramcam.nl/Diversen/all.zip Kind regards, Blackdog |
| taydin:
--- Quote from: blackdog on December 19, 2018, 12:44:43 pm ---If you are aware of my technical remarks and you know that they are correct, why didn't you help the people in this topic? --- End quote --- Many times I can tell if some information is correct or not, mostly gut feeling and strong intuition. But my theoretical knowledge and practical circuit design experience is nowhere near the remarkable people in this forum (probably including YOUR level of knowledge). But even when I'm in forums where my knowledge is WAY ABOVE the demographics, I always try to present what knowledge I have without derogatory remarks. Try it, feels better :) |
| iMo:
Here is the loop model, you may play with it. The output is set to 15V, the Load is pulsing 10mA/5A, 100us edges. PS: I would use a higher voltage at the opamp input, ie. 0-10V for 0-30V output (see the 20k/10k divider). |
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