Can anyone ID this cap? - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd January 2011, 08:21 AM   #1
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Default Can anyone ID this cap?

Hey Guys,

I was just wondering if anyone would recognize this capacitor. It's at least as old as the early 1980's (~30years old),and I'm just wondering if it's still good (film,etc.),or if I should order up some new ones.

Here's a picture
http://i199.photobucket.com/albums/a.../PICT00012.jpg

It says:
NP
TSI-7714
PXA20NV30
20uF-30VNP

To me it seems to be some kind of non-electrolytic (film?) cap,with sealed ends.

I'm off to Google it a bit more..
  Reply With Quote
Old 2nd January 2011, 08:40 AM   #2
tomchr is offline tomchr  United States
diyAudio Member
 
tomchr's Avatar
 
Join Date: Feb 2009
Location: Greater Seattle Area
Yeah, film with plastic (polypro, polyester, PS) dielectric would be my guess as well. 20 uF, 30 V. Unless it's shorted, it's probably still good.

~Tom
  Reply With Quote
Old 2nd January 2011, 09:27 AM   #3
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
20uF/30v? How many rated like this have you seen? My guess is for bipolar electrolytic.
  Reply With Quote
Old 2nd January 2011, 10:03 AM   #4
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Yea,it's a 20uF Bipolar from a crossover network. I'll see what kinda testing I can do on it,and see if it's still any good. Something with a voltage rating higher than 30 volts might be good too.
  Reply With Quote
Old 2nd January 2011, 10:46 AM   #5
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
FILM cap, 30V metallised Polyester.
~ 1975 loudspeaker ?
__________________
The buck stops Here
  Reply With Quote
Old 2nd January 2011, 02:50 PM   #6
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Yea,DIY jobbies made in about 1983 or so.

They seem to be in good shape,so I guess I'll reuse them for now. I might want to find some with a higher voltage rating later on.
  Reply With Quote
Old 2nd January 2011, 04:12 PM   #7
diyAudio Member
 
Join Date: Dec 2005
Location: Kuala Lumpur
It's far too small to be a film type and must be a bipolar electrolytic.
  Reply With Quote
Old 2nd January 2011, 04:16 PM   #8
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
FIVE 30UF 30V 5% Metallized Polyester Capacitors - eBay (item 260713484492 end time Jan-04-11 08:34:33 PST)

(looks like an Altec Lansing part from 2nd part '70s, 1st half '80s))
__________________
The buck stops Here

Last edited by jacco vermeulen; 2nd January 2011 at 04:20 PM.
  Reply With Quote
Old 2nd January 2011, 04:25 PM   #9
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
drek - replace it with any decent modern production

if you have place - use motor-run cap
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 9th January 2011, 02:46 PM   #10
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
Quote:
Originally Posted by jacco vermeulen View Post
(looks like an Altec Lansing part from 2nd part '70s, 1st half '80s))

I was thinking the same thing,I've seen very similar looking caps in some old Altec car speakers. (they were built like tanks!)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Please help ID Wima cap mtl777 Parts 7 25th May 2010 05:51 PM
Little help with ceramic cap ID? peace brainerd Parts 1 4th December 2008 09:36 PM
Need help - Old cap can ID atmars Tubes / Valves 5 7th July 2008 05:03 PM
ID a cap?? Jacco? mpmarino Parts 10 27th September 2007 12:55 PM
Roederstein cap ID please redrabbit Parts 5 25th January 2006 08:46 PM


New To Site? Need Help?

All times are GMT. The time now is 12:22 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2