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Questions about tubes and gear that glows. FAQ

If you already have 12.6 VDC..

You don't need a rectifier. At least, not for the heaters. As long as the source has enough current to handle the heaters of all tubes.

To get 400+ VDC. You start with 6.3 VAC for heater/anodes of the rectifier and at least 400 PIV AC on primary line. Then, rectify it to 400+ VDC. Right?


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