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| TL431 linear power supply |
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| spec:
UPDATE #1 2018_12_18 The attached schematic has the opamp input connections reversed- see reply #77 for revised schematic. Hi mike_mike I got the message that you wanted to use parts from your spares box, so I did the attached schematic for you: (and from the above post I see you need components second sourced in Romania) |
| mike_mike:
Thank you. But I cant see were is the current limit or the short circuit protection... |
| spec:
--- Quote from: mike_mike on December 14, 2018, 07:11:36 pm ---Thank you. But I cant see were is the current limit or the short circuit protection... --- End quote --- No sweat. :) There isn't any current limit- didn't you say that you didn't need current limiting in one of your posts? |
| spec:
--- Quote from: David Hess on December 14, 2018, 12:51:06 pm --- --- Quote from: not1xor1 on December 14, 2018, 08:22:22 am ---you must be kidding ;D a 20V/µs opamp with a huge 1µF compensation capacitor... and what would be the advantage versus a proven and foolproof design using the traditional LM723 ? --- End quote --- The compensation capacitor is way too large but a fast operational amplifier like that would be selected for lower noise. I have done the same thing many times using an LT1007 or OP27. --- End quote --- I don't mess about with compensation. :-DD |
| mike_mike:
I need current limiting. I dont need current limiting led. I need something like a transistor and a power resistor for current limiting. And I dont need that the current limit to be variable. |
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