In Reply to: What to do with 412 volts posted by BofService on March 8, 2017 at 17:28:26:
You can make a "virtual" ct by using a matched pair of 100R 1w resistors, although 1/2 w is adequate. Put the resistor on each leg of the heater circuit and that works very well and i have had no problems with hum doing that.
Edits: 03/09/17
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Follow Ups
- RE: The lack of a heater CT is not much of a problem - DAK 19:37:03 03/09/17 (0)