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Page 48
Now take the Black wire that you attached to the TAG strip on the front insert plate and stretch it down to connect to the
GND bus on the power supply (Zig-Zag silver wire).
Interstage Transformer Wiring
You will see 4 different colored wires coming out of the
Interstage transformer – They are WHITE, BLACK, RED,
and BLUE – they attach as follows:
WHITE wire – connects through a 3K3 resistor to pin 3 of
the 300B valve base.
Black Wire – connects to the 180V output voltage of the
Power supply.
BLUE Wire – connects to the GND Tag strip on the front
insert plate.
Red wire – connects to the 6SH7 pin 8 – carrying the 180V
Here you can see the wiring arrangement for the interstage
transformer.
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