Hello DROK!

There are two products I’d like to request from DROK. I build Guitar Amplifiers. Guitar amplifiers use vacuum tubes. Vacuum tubes require high DC voltages for the plate (cathode).

Could you design and build a ZVS module than can produce 400vdc @ 150ma? This would be what’s called the HT+ for the vacuum tubes.

Could you also produce a module that produces 6.3vdc @ 5a, but is isolated? This would power the vacuum tube heaters. It is important the output be completely isolated from the ground, to prevent the cathode of the vacuum tube from arcing to the heater.

If both of these modules could be powered from 12vdc-36vdc that would be incredible.

Thank you very much for your consideration, I hope to possibly see this in the future!