evening all.
I’m on the road, sat in a hotel restaurant, chewing on dinner and on small circuits. I’m thinking about making a phantom power source from a simple boost converter - from a 5V or 9v source.
The boost converter I have in mind is running at 400kHz, way beyond audio range, but I still worry about noise.
I was thinking of adding a series inductor followed by a capacitance multiplier after it, before throwing it into a lm317 (with a zener to keep it in spec).
Overkill? Not enough? I’d like enough current to drive 4x mics
Cheers
R
I’m on the road, sat in a hotel restaurant, chewing on dinner and on small circuits. I’m thinking about making a phantom power source from a simple boost converter - from a 5V or 9v source.
The boost converter I have in mind is running at 400kHz, way beyond audio range, but I still worry about noise.
I was thinking of adding a series inductor followed by a capacitance multiplier after it, before throwing it into a lm317 (with a zener to keep it in spec).
Overkill? Not enough? I’d like enough current to drive 4x mics
Cheers
R