I have a Philco 38-60 that I got and posted earlier and was told to trade out the old capacitors to new..... Ok I will be fine I hope in soldering in new ones but the problem that Radio Shack can't seem to help me with is how to convert the mfds to ufs???? I thought they might be a little help but were none at all. I have the big capacitor which is a 16mfds at 450 dc volts and then a smaller one that is 8mfds at 450 dc volts bother are electrolytic capacitors. the I have the paper ones that say 1 mfds and the philco stock numbers of 30-4455s one 30-4317 p a 30-4412 p and a 30 4358 p. I would like to know which ones to replace these with but would also like the rule of thumb of how to convert for the next radio I get how to do it without asking help. Thanks for any help Shawn
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
mfd = mF = uF
mmfd = pfd = pF
Use paper capacitors rated at either 600 or 630 VDC, this will cover just about every antique radio need.
Usually, electrolytic capacitors should be rated at 450 WVDC. Occasionally, you may need a 500 WVDC unit but this will be the exception rather than the rule. Also, some Philco models used a 10 uF low voltage electrolytic in the B- supply of the set;
these should have their positive ends connected to ground and should be rated at 50 WVDC.
If in doubt, please feel free to ask
Edit: I seriously doubt you will find any help at Radio Shack. As someone over on the
Antique Radio Forum has said previously, "Radio Shack. You've got questions, we've got blank stares."
--
Ron Ramirez
Ferdinand IN
Posts: 205
Threads: 6
Joined: Jun 2006
City: Moundsville
State, Province, Country: WV
My local Rat Shack hasn't carried capacitors suitable for old radios for many years.
A lot of the guys buy their capacitors from Just Radios:
http://justradios.com/
I buy mine from Mouser:
http://mouser.com/
Carl
Northern Panhandle, WV
Posts: 457
Threads: 31
Joined: Sep 2009
City: Lapeer
State, Province, Country: MI
I get most of my parts from Allied Electronics...
Joe
Matthew 16:26 "For what does it profit a man if he gain the whole world, yet lose his own soul?"
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
I generally buy capacitors from Bob's Antique Radios:
http://www.radioantiques.com/
I like Mouser, but try to support Bob as often as I can because his business is a small proprietorship deserving of our support. Besides, Bob is a nice guy as well.
--
Ron Ramirez
Ferdinand IN
Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
Bob is a Two Thumbs Up operation.
Great selection AND prices.
Here is his website:
http://www.radioantiques.com
Chuck
Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
M.H.
More great resource links
http://philcoradio.com/resource.htm here on Ron's site and also the Resource Links page
http://www.philcorepairbench.com/links.htm on my site.
Chuck
Posts: 404
Threads: 53
Joined: Feb 2009
Chuck Schwark Wrote:M.H.
More great resource links http://philcoradio.com/resource.htm here on Ron's site and also the Resource Links page http://www.philcorepairbench.com/links.htm on my site.
Chuck
Thanks for this link Chuck. He happens to have #49 pilot bulbs that I had been looking for for a bit. Good price on them too!
tractorforum.com *** I reserve the right to be wrong
.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
