Triad HS-52 OPT 20K-600

CJ said:

you will find this classic transformer inside the Fairchild 670 ,

it has a close cousin, the HS-50 which is found in the Pultec MEQ-5 equalizer,

this guy is a push pull,

note: Fairchild 670 has the HS-52 wired out of phase, so the terminal numbers of the pri will be reversed on the schematic, this is done to flip the inverted signal back after passing through the single stage of the 6386 tubes,

at what frequency did they spec the 26 DBM power level at? this thing craps out at 16 when checked at 20 Hz,

here is the print>

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CJ said:

i will stick all the links in the xfmr meta........

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CJ said:

we could not get the primary into full saturation with 24 volts, so we use the lower turns of the sec. to get the B-max cookin, (less turns = more flux)

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