Use a 5 ohm shunt, and a gain of 15.6.
Probably a better idea since 5Ohm is readily available.
Here's a simple charge pump: http://snipurl.com/23qbkk only 4 parts. 2 10uf caps, and 2 1N4148 diodes. Output roughly -4V.
The URL does not work.. I am not sure if I have a spare controller pin for that, I will have to check.
The supplies need not be symmetrical. They only need to cover the input and output signal swing range, with a little margin. Op-amps are beautiful. Even from the old Philbrick tube modules
It is my first project that actually uses an op amp, so I am quite curious if this all works out.. I will let you guys know when I have something.
Many thanks for the input! Best regards, Jens -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
