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Philco Battery pack 41-8007
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03-11-2008, 10:35 AM
Has anyone on the phorum ever taken one of these apart,or is a schematic of
the battery pack available?Am rebuilding a 38-38,and am using a AC pwr supply;would like to keep the 2 volt tubes,however the biasing of the audio stages has me in a puzzlement.The -9 vdc for the 1H4G driver tube is returned to gnd via a 900 ohm resistor in series with a 1 meg /100k resistor to the grid of the 1H4G-the -9vdc is applied to the junction of the 900 and 1 meg resistors.Now is this battery pack one continous battery that is tapped or are there separate "B" and "C" sections?
Tnx es 73 de Bill W4NJF
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Messages In This Thread
Philco Battery pack 41-8007 - by Guest - 03-11-2008, 10:35 AM
[No subject] - by Ron Ramirez - 03-12-2008, 06:51 PM
Philco 41-8007 - by Guest - 03-13-2008, 10:10 AM
[No subject] - by batterymaker - 03-14-2008, 10:02 AM
[No subject] - by batterymaker - 03-14-2008, 10:06 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration