90V @ 10Amps High Voltage & High Current Output Unregulated Power Supply Circuit

90V-10Amp Power Supply  (1)

This project is designed to provide unregulated high voltage, high current for your demanding needs.  Ideally suited for use in Audio Amplifier design projects.


  • Input – 0 – 65 VAC, 10 Amp
  • Unregulated fused output with extra filtering
  • 10 A bridge rectifier on board
  • LED indication for output
  • PCB mounted LUGS for connecting input and output
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 74 mm x 96 mm


90V-10Amp Power Supply (3)

90V-10Amp Power Supply (2)

90V-10Amp Power Supply (1)


  • Yuksel Yazgin

    I understand that this is a 90v power supply which can be used for 7 pin tube radios. Thanks for this diagram. But I could’nt understand the value of R1 which is 330E. PLEASE GIVE DETAILS.

    • Hi,

      The power supply can b used for high voltage and low voltages, Kindly replace R1 6.8K/2W for 90V DC supply, its mistake, 330E is suitable for low voltages like 5-6V. Thanks reminding me a mistake.

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