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RE: 12AT7 runs fine on either 6.3 or 12.6 V........

By placing the two halves of the heater in parallel the heater runs on 6.3 volts.

Pins 4 and 5 get tied together for one connection and pin 9 is the other connection.


Tre'
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  • RE: 12AT7 runs fine on either 6.3 or 12.6 V........ - Tre' 19:36:19 08/04/17 (0)

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