1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
49-504 voltage drop / pilot lamp spike problem
45philcodon
Member
***
Posts: 95
Threads: 34
Joined: Oct 2016
City: Fountain Hills, Arizona
#5

06-30-2020, 04:38 PM
I agree with RodB. The voltage drop across the 220 ohm resistor between points C and D indicate an additional ~82MA being drawn by the audio output tube.This additional 82 MA would also flow through the lamp causing a significant increase in voltage across the lamp.
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: 49-504 voltage drop / pilot lamp spike problem - by 45philcodon - 06-30-2020, 04:38 PM



Users browsing this thread: 1 Guest(s)
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration