View Full Version : Mica cap


timmy
05-22-2017, 06:02 PM
Can anyone decifer the value of this cap the colors on top are brown, brown, silver, bottom red,black, blue.

jr_tech
05-22-2017, 06:55 PM
This might help.

http://www.radioremembered.org/capcode.htm

jr

Jon A.
05-22-2017, 07:23 PM
Here's another good site, it explains everything:

http://www.tpub.com/neets/book2/3g.htm

I can't say with 100% certainty, but if that is a blue dot and not green, I'd say it's 6000pF with a 20% tolerance. A safe bet for the working voltage would be 300.

timmy
05-22-2017, 08:00 PM
I was able to figure out that this cap has a silver dot far left and identifies a molded paper cap and also it's rated +20 % and the other dot 1 and 2 tells the pf which I can't figure out, both brown colors indicates 1 for each and the multiplier is 1 million. This is where I get hung up. And yes it's a blue dot. I still cannot figure how to get the voltage either. Those colors are , blue , black red , above , brown , brown , silver .

old_tv_nut
05-22-2017, 08:35 PM
don't just say top and bottom.
Give us the colors in the order shown by the curved yellow arrow at
http://www.tpub.com/neets/book2/3g.htm

If you do, I suspect the value will be 11 (brown, brown) with a multiplier of 100 (red), so 1100 pf.

timmy
05-22-2017, 08:42 PM
Holding the cap to read what's on it , top left to right, silver ,brown , brown.
Bottom right to left , blue , black , red .
I have 2 of the same caps both measure different from each one . I measured the caps and one is 5.76 and the other 6.22 which my meter means 5,076 and the other 6,022 . The 2 Browns are correct but the red is or would be blue because the blue is the first color right to left.

old_tv_nut
05-22-2017, 09:25 PM
This shows the difference between JAN and RMA codes, but neither is making much sense to me:

http://www.technicalscientific.com/PICS-5/cornell-dubilier-capacitor_codes.jpg

timmy
05-22-2017, 09:55 PM
Those are the colors and in that order, the silver next to the #1 shows it's a paper and infact not a mica and the 1, 2, show 1 for each and the color for the multiplier is 1 million and I don't know how to get the correct value from that, lol.

WISCOJIM
05-22-2017, 10:45 PM
Can anyone decifer the value of this cap the colors on top are brown, brown, silver, bottom red,black, blue.

What do the schematic and parts list say?

.

old_tv_nut
05-23-2017, 12:16 AM
Those are the colors and in that order, the silver next to the #1 shows it's a paper and infact not a mica and the 1, 2, show 1 for each and the color for the multiplier is 1 million and I don't know how to get the correct value from that, lol.

If the multiplier really is one million, that would make this an 11 microfarad capacitor - hard to believe.

timmy
05-23-2017, 05:19 AM
What do the schematic and parts list say?

.
Well that's the problem, I don't have a schematic for this set there are several and the one I have is really different to the point where I cannot use it. Teletone tv 208 no ballast, and round plug and a 6x5 tube .

timmy
05-23-2017, 05:41 AM
If the multiplier really is one million, that would make this an 11 microfarad capacitor - hard to believe.

Looking close at this cap the 2 dots that I have been saying is brown now looking closer appears that those dots seem to be the same color as the cap body, now I'm really lost. :sigh:

bandersen
05-23-2017, 09:52 AM
Using the diagram at the bottom of this page: http://www.tpub.com/neets/book2/3g.htm

I'm thinking that it's blue, black and red or 6,000 pF which is very close to what you measured.

Silver = 20% tolerance
Voltage rating for brown is 200 volts,