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i'm on a roll... the kgsshv


kevin gilmore

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Well the ps board was not updated for some reason, all those should be fixed now.

The wiper on the pot is the center pin, and as a two wire device it really does not matter

which end its tied to ??

The connectons to ground are hard to see in the jpg's.

here are the pdf's

http://gilmore.chem.northwestern.edu/kgsshvamp3.pdf

http://gilmore.chem.northwestern.edu/kgsshvps.pdf

Edited by kevin gilmore
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  • 2 weeks later...

i'm thinking seriously of doing a version of the board with a simplified current source that performs just as good

(1000 volt ixys part, thanks marc) and with standup heatsinks. Will make it lots easier and cheaper for

people to build it. Power supply will be the same thing. Hopefully will get started on it friday.

Will cut the power supply voltages to +/-450 just to make sure the current source has a bit of headroom.

if anyone knows of a depletion mode fet that does more than 1000 volts and will run at 1ma, let me know.

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i'm thinking seriously of doing a version of the board with a simplified current source that performs just as good

(1000 volt ixys part, thanks marc) and with standup heatsinks. Will make it lots easier and cheaper for

people to build it. Power supply will be the same thing. Hopefully will get started on it friday.

Will cut the power supply voltages to +/-450 just to make sure the current source has a bit of headroom.

if anyone knows of a depletion mode fet that does more than 1000 volts and will run at 1ma, let me know.

High voltage depletion mode JFET

http://www.semisouth.com/products/uploads/DS_SJDP120R085_rev1.0.pdf#search=%27SJDP120R085%27

but it is too big... :(

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