Heater Supply Circuits-AC and DC

CJ · Sep 2, 2014

thought we could throw down some vac tube heater circuits all in one place,

there are a ton of them out there, AC and DC,

never had much luck with regulators, they do not like the start up currents,

and sometimes the high voltage plate supply finds it's way to the regulator,

here is a DC supply to get things rolling,

CJ · Sep 2, 2014

here is another DC circuit, taken from Vacuum Tube Valley,

CJ · Sep 2, 2014

DC #3

CJ · Sep 2, 2014

something a little different, just for kicks,

here is a preamble to a weird RF heating scheme>

CJ · Sep 2, 2014

here is the RF Heater circuit>

CJ · Sep 2, 2014

here is an AC supply with a cap in the CT>

CJ · Sep 2, 2014

here is a circuit with a 5 V-ac and 6.3 v-ac combined, AC/DC>

CJ · Sep 2, 2014

here is an imaginative approach, uses a Lamda DC supply in conjunction with the regular supply>

CJ · Sep 2, 2014

here is a 12 volt version of a DC supply>

CJ · Sep 2, 2014

this supply has the heaters biased up from the HV supply>

CJ · Sep 2, 2014

this is another elevated supply only DC this time>

CJ · Sep 2, 2014

one tube gets AC, one tube gets DC>

CJ · Sep 2, 2014

elevated 6.3 and hum balanced 2.5 V-ac circuit

individual transformers for the 2.5 V-ac tubes>

CJ · Sep 2, 2014

series resistor because heater voltage was 7 V-ac instead of 6.3>

CJ · Sep 2, 2014

stacking different 6.3 V-ac tubes to get correct voltage drops>

CJ · Sep 2, 2014

DC supply with single diode,

memory capacitors? ??? maybe scrounged out of disposable cameras?

CJ · Sep 2, 2014

elevated AC supply using cathode bias voltage>

CJ · Sep 2, 2014

infamous Marantz 10B tuner, has regular AC, elevated AC,

a and minus biased AC for the mini CRT which was used for tuning stations,

CJ · Sep 2, 2014

infamous Fisher 500C has some weirdness (translate-do not understand)

has a -22 V-dc series string on a few 12AX7's,

and some funny caps on the upper string>

CJ · Sep 2, 2014

Fender AC supply with hum balance pot>

Heater Supply Circuits-AC and DC

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