Tag Archives: Oregon Electronic

Oregon Electronic Model A3 Variable Voltage Regulated Power Supply

Here’s another project I just finished at Rain City Audio:

This vacuum tube power supply from an engineer’s test bench can replace a radio or test circuit’s power supply to help with troubleshooting or experiments, with up to 400V for B+ and 6.3V 5A for the heaters. It needed some new capacitors, then fired right up and works perfectly! Continue reading

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