RE: my regulator isn't regulating

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In Reply to: RE: my regulator isn't regulating posted by Blackdog on May 21, 2020 at 14:52:47:

Thanks for responding. I suspected that I had somehow fried the MOSFET while I was troubleshooting the regulator. I rebuilt it with a new IRF840 and new resistors. I also reduced the 18200 ohm resistor feeding the zener string with a 2200 ohm resistor to draw more current through the zeners. I also added a diode between the drain and gate. This seems to have worked. I am now getting 304 volts out. We'll see if it keeps working. Wish me luck.

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Follow Ups Full Thread

Topic - my regulator isn't regulating - floydandrews 16:39:19 05/20/20 (3)

RE: my regulator isn't regulating - Blackdog 14:52:47 05/21/20 (1)

RE: my regulator isn't regulating - floydandrews 17:46:01 05/22/20 (0)

What you have drawn should work - Chip647 21:21:24 05/20/20 (0)

Follow Ups

RE: my regulator isn't regulating - floydandrews 17:46:01 05/22/20 (0)

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