Quote:
Originally Posted by old_tv_nut
What does the following circuit look like and what is the p-p voltage supposed to be?
Anyway, the DC voltage across the 10k ohm is 400-250 = 250.
250 squared divided by 10k is 6.25 watts.
Wondering if they really needed a 400 volt supply for this stage, or if it was the only thing they had, so a high-wattage resistor was cheaper than supplying a special lower voltage.
|
they basically carbon copied everything from the CTC-16
https://i.imgur.com/hzAFBB0.png
as seen here
it was easier to grab that
another thing noticed, voltage on pin 8 is also way too high, as is the source (110 in the GE 100 in the RCA) it is WAY over, 260v and shoots higher when tube is removed. Again pointing to faulty tube I think, in this GE, the 110 is sourced from the 380v source through a 47k 1 w resistor and tied to a 2uf filter, and goes to only 2 points, that grid of the 1st amp, and here,
https://i.imgur.com/yKyOtr1.png
there is nothing else to pull that voltage down to 110v
