Hi
A friend of mine got an old Bruel & Kjaer / DPA 4003 microphone which require 130 Volt phantom power.
So I look for a schematic to create the 130v phantom instead of normal 48v to get it operating.
Of course it would be possible with an oscillator and a Jacob ladder to make some high voltage but since it has to be use with a microphone level I believe it quickly will make some noise so any suggestion are welcome..