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

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco Battery pack 41-8007
Guest
Unregistered
 
#1

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
« Next Oldest | Next Newest »
Thread Closed


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



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco newbie with P-1891-WA console questions
Hello Jeff , Far as the Electrolytic capacitors go here is a list of parts. that will work . I like using Nichicon and...radiorich — 09:50 PM
Philco newbie with P-1891-WA console questions
Well, I've been stumped at trying to get the first of 11 electrolytic capacitors. I got a schematic and have a list of t...Jeffcon — 07:54 PM
Model 80 Antenna Issue?
Thanks Gary and Rod.  I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hi PittsburgTost. The record changer looks like a Garrard or BSR (Likely Garrard). The spindles just pull out and pu...MrFixr55 — 11:57 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hello PittsburghToast , Welcome aboard and it looks like gary may have something for you ! now if I dig through my se...radiorich — 11:35 PM
Model 80 Antenna Issue?
You are kind of on the right path. You can touch the grid cap of the Detector/Oscillator 36 tube. I'm expecting a respon...RodB — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum, PittsburghToast!  I found an old thread that my interest you regarding the quality and worth of P...GarySP — 08:48 PM

[-]
Who's Online
There are currently 954 online users. [Complete List]
» 1 Member(s) | 953 Guest(s)
Avatar

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