05-20-2015, 05:20 PM
Sorry I forgot about the bottom part of your post
A- Black (goes to chassis) - 4 to -6 vdc @ 1.5A (each tube uses 250ma )
B+ power Blue (goes to speaker) +90 to 180vdc
B+90 Brown +90vdc (HV for the RF stages)
B+ Det Yellow +22vdc the minis side connects to chassis
C- Grey depends on how much hv you are using on the 71A -18vdc
C+ Green ( goes to Chassis) goes to the +side of the C- battery
And one red lead which goes to one side of the heaters the heaters would this be A+?
yes +4 to 6vdc @1.5amps
Also don't see a B- ? Connect B- to A- (the chassis)
It looks as thought I will need 3 voltages?
Nah it's looking like 5. Now if you are cheap and clever you can run the spkr and RF stages off of the same 90v buss. Then use a resistor to drop the 90v down to 22v the det voltage
A, B, and C How would they be connected?
and at what voltages?
See above.
Terry
A- Black (goes to chassis) - 4 to -6 vdc @ 1.5A (each tube uses 250ma )
B+ power Blue (goes to speaker) +90 to 180vdc
B+90 Brown +90vdc (HV for the RF stages)
B+ Det Yellow +22vdc the minis side connects to chassis
C- Grey depends on how much hv you are using on the 71A -18vdc
C+ Green ( goes to Chassis) goes to the +side of the C- battery
And one red lead which goes to one side of the heaters the heaters would this be A+?
yes +4 to 6vdc @1.5amps
Also don't see a B- ? Connect B- to A- (the chassis)
It looks as thought I will need 3 voltages?
Nah it's looking like 5. Now if you are cheap and clever you can run the spkr and RF stages off of the same 90v buss. Then use a resistor to drop the 90v down to 22v the det voltage
A, B, and C How would they be connected?
and at what voltages?
See above.
Terry
