The PHILCO Phorum
Philco 623 - Printable Version

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+--- Thread: Philco 623 (/showthread.php?tid=7108)

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RE: Philco 623 - marty - 07-25-2013

Hi All;
Jerry, I see your point..
Even, though this is my first old radio and the only one I am working on.. My other radio is a Pioneer AM/FM Transistor/Ic job..
THANK YOU Marty

RE: Philco 623 - Arran - 07-26-2013

The so called "Usual Battery" set with 1.5 v and 90 volt batteries didn't really come onto the market until 1939 or so. The Philco model 623 is from 1936 and using two B+ voltages and C- voltages was not all that common. They are not really that complicated to get running, the battery eliminator kit that antique electronic supply used to sell (maybe still does) is more then sufficient to run one of these.
If you are a little better at home brewing you can make supplies out of scrapped parts, probably one of the easiest things to use is a power transformer from a 1940s through 1960s radio-phono combo units as they have most of what you need, 5 volts, 6.3 volts, and a 350-0-350 high voltage winding. I've also read about people using a pair of low voltage transformer connected back to back like joernone did on you tube.
I don't know how much of a hurry you are in but our own Bob Andersen also has a Philco 623 that he is planning to restore and needs to build a power supply for, maybe you could wait and see what he come sup with?
Regards
Arran

RE: Philco 623 - marty - 07-26-2013

Hi All;
Budi, send a messsage to Bob Andersen, and find out IF He has started on the Power Supply and / or can give You any help with it.. He may have already figured one out for it.. Also, JoeRnone on YouTube has a battery set He made a power supply for and Phil Nelson also has some information on Battery eliminators..
Jerry, all I was trying to do was show that a power supply could be made, not to go off topic..
THANK YOU marty

RE: Philco 623 - Radioroslyn - 07-26-2013

If you are leaning toward building a battery you should check out Bill the battery maker. I don't think he's still building but may have some usefull bits and pieces like the graphics for the battery cover.
http://www.youtube.com/user/batterymaker
Terry

RE: Philco 623 - Bob Andersen - 07-26-2013

Hi. I also have a 623 and will be restoring it: http://philcoradio.com/phorum/showthread.php?tid=5384

I haven't started on the battery eliminator yet, but I have the basic design in my head. I'll be using a transformer salvaged from an old tube TV. An LM317 (or LM338 ) for the filament regulator and an LR8N3 HV regulator for the B+ based in this design - http://www.antiquewireless.org/otb/resto0504.htm

RE: Philco 623 - budibower - 07-26-2013

Thanks to all for the great info. Definitely gives me a starting point. Going to check out all your leads. Would really love to get this thing working.