Quote:
Originally Posted by winston_1
Hi John,
I'll assume ECC84 is a typo. Mine has a PCC84. the 2 valve heaters are in series off a winding on the transformer.
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Hello Winston,
Probably due to slight circuit alteration during manufacture. The circuit shows ECC84 and ECF80 [6.3V] with a valve rectifier. Mine has a metal contact cooled type. They were probably swamped with orders and had to modify slightly to keep production going. John.