The PHILCO Phorum
Capacitor Help...translation - Printable Version

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Capacitor Help...translation - lbryant5879 - 01-27-2019

I have a schematic for my Philco SA-1000 speaker and the capacitor descriptions don't quite line up with product options online.  I'll admit, this is the first time I've stepped into the vintage electronics realm and I have no idea what I'm doing.  I thought I could just type in the capacitor description online and have an option to buy but that's not the case.  Can someone translate the list of capacitors into options I can use, find, etc.

1) .0047 mfd 400v
2) 10 mfd 25v
3) .0033 mfd 400v
4) .047 mfd 600v
5) .1 mfd 400v
6) .0033 mfd 600v
7) .001 mfd 600v
8) .1 mfd 200v

The websites I've search will either have the mfd available but not with the matching voltage or vice versa.  What are my other options?
THANK YOU!

RE: Capacitor Help...translation - radiodale - 01-27-2019

Go to “oldradioparts”

Use 630 volts for all but item 2. It is an electrolytic , the others are film capacitors.

RE: Capacitor Help...translation - NostalgiaRadioTime - 01-27-2019

This may be helpful on installing capacitors and choosing the correct one:

https://www.justradios.com/captips.html

Also this chart has the information you're looking for:

   

So...

1) .0047 mfd 400v  = 472K
2) 10 mfd 25v  = electrolytic capacitor, actual value.
3) .0033 mfd 400v  = 332K
4) .047 mfd 600v = 473K
5) .1 mfd 400v = 104K
6) .0033 mfd 600v = see #3
7) .001 mfd 600v = 102K
8) .1 mfd 200v = see #5

RE: Capacitor Help...translation - klondike98 - 01-27-2019

You can use the 630v film caps with capacitance that is close to what you are looking for in those cases. Higher voltage rating is not an issue.

RE: Capacitor Help...translation - lbryant5879 - 01-27-2019

Thanks, everyone.  Just ordered everything I need (hopefully).  Gonna start clipping out capacitors and melting bees wax next weekend.

RE: Capacitor Help...translation - lbryant5879 - 01-27-2019

Here's another question for all you experienced folk:  What gauge wire do you use for replacement?  Also, is the new wire solid or stranded?  I get mixed opinions on Google searches and I'd like an expert opinion.  Thanks.

RE: Capacitor Help...translation - Kestas - 01-27-2019

I prefer to use solid wire, unless it's used where it'll see movement during service. Movement would include connections to parts like the speaker, eye tube, and grid caps. Solid wire would more easily fatigue and break during service, but is easier to solder for point-to-point connections. Stranded wire will more easily tolerate flexing, but makes for messy soldering.

I'm not sure what the acceptable gauge is.... 18?

RE: Capacitor Help...translation - Phlogiston - 01-27-2019

(01-27-2019, 03:48 PM)lbryant5879 Wrote:  Here's another question for all you experienced folk:  What gauge wire do you use for replacement?  Also, is the new wire solid or stranded?  I get mixed opinions on Google searches and I'd like an expert opinion.  Thanks.

I use what ever is as close to the original as possible.