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RE: DC Heater PSU Schematic, etc.

This doubler should work well to supply the regulator. If I recall, the similar setup I used in the RCA hybrid MOSFET follow circuit provides about 14VDC and regulates to 12VDC well. The 12AX7s don't pull much current for their heaters.

Use a heat sink on the 7812 -- it gets warm.


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  • RE: DC Heater PSU Schematic, etc. - jyourison 19:47:24 12/12/14 (0)

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