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Mosfet pair with odd lead order
Mosfet pair with odd lead order
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Old 11th October 2018, 12:00 AM   #11
jacampb2 is offline jacampb2  United States
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Location: Beaverton, Mi 48612
Originally Posted by Andrew Eckhardt View Post
It was a jfet input bipolar out amp of beautiful discrete simplicity. I wish I still had the schematic to share. Back in the day it was easy to tell when the salesmen left the ads amps selected while going past the autosound display area.
I too wish you had the schematic. This had been a challenge to work on, mostly due to the fact that there is no component silk screen on the board and that it's been through a few people attempting repairs in the past. I've spent a lot of time just undoing work that's been done just to figure out what the issues are.
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Old 11th October 2018, 02:55 PM   #12
nigelwright7557 is offline nigelwright7557  United Kingdom
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Location: Carlisle, England
If you swap D-S on a vertical mosfet the body diode would be conducting all the time.
PCBCAD51 pcb design software. 2018 version out now with lower prices >> http://www.murtonpikesystems.co.uk
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