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I'd like to post a schematic for my new shunt regulator...

But I don't know how.

Do I need to use an external image hosting service, and if so can someone point me to one?

I posted before on the subject of shunt regulators, asking whether anyone knew of a good discrete circuit I could use instead of the lm431 IC which I have found to be too easily povoked into wild oscillation. I tried a string of diodes (for the 32 volts I'm looking for you need 45 pn junctions!) which works but has a quite high impedance and lots of temperature drift, and a kind of amplified band gap circuit which has the same problems. I then came up with a cascaded version of the amplified band gap circuit and this is working well - currently has about 2 ohms impedance but I think I can reduce that by changing to 1N4148 diodes for the bandgap.


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Topic - I'd like to post a schematic for my new shunt regulator... - Mark Kelly 16:38:01 07/1/02 (7)


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