In Reply to: referencing DC heater to B+ posted by jarthel on March 27, 2007 at 05:36:14:
The trick here is that the heater DC supply is not grounded but floats on the 1/4 B+ This method is quite common as a means to alleviate cathode to heater stress.
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Follow Ups
- Re: referencing DC heater to B+ - ojd 05:48:31 03/27/07 (0)