tk@halmi
Well-known member
Look at the end of the thread for schematics.
Original message:
I have been looking all around and I have not been able to find schematics for a really low power DC-DC converter to make +-60 Volts for multipattern mic capsule charging.
It needs to draw 1ma or less and be powered from P48. Anyone has something that works?
In the mean time I am dorking with two circuits. One is a CMOS inverter based charge pump (Jakob has a good document on his site on this). The other one uses an oscillator and a pulse transformer.
Thanks,
Tamas
Original message:
I have been looking all around and I have not been able to find schematics for a really low power DC-DC converter to make +-60 Volts for multipattern mic capsule charging.
It needs to draw 1ma or less and be powered from P48. Anyone has something that works?
In the mean time I am dorking with two circuits. One is a CMOS inverter based charge pump (Jakob has a good document on his site on this). The other one uses an oscillator and a pulse transformer.
Thanks,
Tamas