Hi guys , here is a stupidly easy question for you ......
I"m running 6.3v AC heaters and the data sheet for the 12ax7 says that at 6.3v the heater draws 300ma Current ...... is that 300ma (150ma per triode) per tube or 300ma per triode (600ma per tube) .......
I need to know becasue my 6.3v tap is putting out 7.75v under a load (2 x 12ax7) and I need to calculate what resistor to use to drop it to 6.3v ....
thanx
I"m running 6.3v AC heaters and the data sheet for the 12ax7 says that at 6.3v the heater draws 300ma Current ...... is that 300ma (150ma per triode) per tube or 300ma per triode (600ma per tube) .......
I need to know becasue my 6.3v tap is putting out 7.75v under a load (2 x 12ax7) and I need to calculate what resistor to use to drop it to 6.3v ....
thanx
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