B Analog power supply output question

[Baluncore]

It works good. Thanks.

I would like to see a diagram sometime, showing how you are connecting the "ripple inverter transistor".

 

[Patch Cabbage]

It will probably just sample the line ripple and amplify it and invert it through a dropping resistor on its collector. Just a standard circuit. I wish I could find a better way of doing it since the ripple invert has to follow a variable output. Thanks.

 

[Baluncore]

It will probably just sample the line ripple and amplify it and invert it through a dropping resistor on its collector. Just a standard circuit.

There are very many ways of doing it. I am interested seeing exactly how it is being done. Can you give me a link to the circuit on the web?

 

[berkeman]

I'm setting up an analog power supply. I have the transformer bridge and filter capacitors so far. The transformer puts out 30 volts. I am currently using two parallel power transistors and a variable resistor to set the output. It also has a meter to monitor voltage. The question is this. How do I set up a single transistor to remove whats left of the ripple after the filter capacitors. It has to vary along with the control transistors to be constant in its ripple removing. The bases of the two power transistors to the potentiometer is currently the control.

No problamo, as I have learned nothing from this thread.

Well, it's the old GIGO principle I guess. But maybe we can still help you a bit, since this part of your circuit makes no sense to me:

The two transistors are not connected as any kind of voltage regulator. Their only function that I can see is to convert current into heat, and lower the efficiency of your unregulated power supply. Did you mean to describe some other connection of these transistors?