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Linear Regulator Pass Transistor vs Parallel Regulators

I'm not a big fan of paralleling linear regulators for reasons others have noted. I've built variable supplies with LM317/337s using (by)pass transistors, but these are unsatisfying because you have ...
Eric Fournier's user avatar
0 votes

Making LM317 output voltage adjustable down to 0 V

Here's the lTspice sim of a circuit similar to that suggested by JohnnyB: The sim shows the output voltage (green trace) versus the R4 pot resistance (red trace), which goes from 0V to 10V for a 0 to ...
Carl Rutschow's user avatar
0 votes

Making LM317 output voltage adjustable down to 0 V

The way I have done this many decades ago: Use two LM317: one in a classic regulator w. a 5k pot, and the other in simple 1.24V constant non-adjusted supply. They have to be supplied from separate ...
JohnnyB's user avatar
3 votes

The 3.3V Fixed Regulator was burned with 12V input

I agree with what @Hearth said. In addition, I would like to say that if the current values you need are high in the power domain you need and there is a high voltage difference between the input and ...
Dead Man Riding's user avatar

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