What kind of cap is this ?

Bernhard · 16th January 2004, 09:03 PM

Hi,

what brand is this ?
And what dielectric ?

There is glass between leads and case.

I opened a small one, the foil is transparent with a green cast.

Bernhard

li_gangyi · 16th January 2004, 11:30 PM

it's a probably a teflon cap..some of them are rated mil-spec...I dunno about the ones in urpicture though...should be good for crossover work...

Bernhard · 17th January 2004, 12:07 AM

No, this is not Teflon.

(M)KT ?

It does not feel soft, makes harsh sound when touching it, it is not possible to stretch. Mylar ?

fdegrove · 17th January 2004, 12:27 AM

Hi,

Quote:

No, this is not Teflon. (M)KT ?

Metallised polyesterfilm.

Gruesst die,

Bernhard · 17th January 2004, 12:32 AM

It is not metallised. It is plastic foil and aluminum foil.

But if this is polyester, why they put that crap

in the hermetically seald case ?

fdegrove · 17th January 2004, 12:38 AM

Hi,

Quote:

But if this is polyester, why they put that crap in the hermetically seald case ?

It is polyester and they used the metal case for environmental protection.

O.K. Film and foil iso metalised than...

Mylar is also a kind of polyester film...I think that's a Dupont De Nemours brandname though...

SY?

Cheers,

li_gangyi · 17th January 2004, 12:53 AM

well this guy has some on E-bay
http://cgi.ebay.com/ws/eBayISAPI.dll...&category=4662

fdegrove · 17th January 2004, 12:56 AM

Hi,

Quote:

well this guy has some on E-bay

No, NOT the same caps...

Cheers,

Apex Jr · 17th January 2004, 02:04 AM

I see this might have come from a Tektronix scope
the ceramic boards are very valuable for audio for
guitar amp work. I'm not sure but they look like the
old CP0 spraque oil in paper vitamin Q type but this
is only a guess. You might want to let us know what
scope or Tektronix intrument this picture is from.
Steve @ Apex Jr

Bernhard · 17th January 2004, 07:51 AM

They were spare parts for I don't know what.

There are also .5075 and .05075 and .005075µF.

Maybe they are for some oszillator.

Which means tight tolerance.

Why cheap Polyester ?

I was happy to have some nice coupling caps

Also some that look similar are found as coupling caps behind the AC/DC switch of TEK plug-ins.

Isn't it important to have very good quality caps there ?

16th January 2004, 11:30 PM	#2
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	it's a probably a teflon cap..some of them are rated mil-spec...I dunno about the ones in urpicture though...should be good for crossover work... __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

17th January 2004, 12:53 AM	#7
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	well this guy has some on E-bay http://cgi.ebay.com/ws/eBayISAPI.dll...&category=4662 __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

17th January 2004, 02:04 AM	#9
Apex Jr diyAudio Member Join Date: Jun 2002 Location: Torrance, Calif	Cap info I see this might have come from a Tektronix scope the ceramic boards are very valuable for audio for guitar amp work. I'm not sure but they look like the old CP0 spraque oil in paper vitamin Q type but this is only a guess. You might want to let us know what scope or Tektronix intrument this picture is from. Steve @ Apex Jr

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How do I tell what kind of AMT I have?	Urloony	Planars & Exotics	0	1st February 2005 05:15 PM
Different kind of sub	rjon17469	Subwoofers	7	16th November 2004 08:42 PM
What kind of cap is this ? (2)	rbroer	Parts	5	11th February 2003 03:39 PM
What kind of cap is this ? (1)	rbroer	Parts	1	10th February 2003 06:24 PM
What kind of amp is this?	swirv	Solid State	5	1st February 2003 12:53 AM


	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

17th January 2004, 12:07 AM	#3
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	No, this is not Teflon. (M)KT ? It does not feel soft, makes harsh sound when touching it, it is not possible to stretch. Mylar ?

17th January 2004, 12:32 AM	#5
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	It is not metallised. It is plastic foil and aluminum foil. But if this is polyester, why they put that crap in the hermetically seald case ?

17th January 2004, 07:51 AM	#10
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	They were spare parts for I don't know what. There are also .5075 and .05075 and .005075µF. Maybe they are for some oszillator. Which means tight tolerance. Why cheap Polyester ? I was happy to have some nice coupling caps Also some that look similar are found as coupling caps behind the AC/DC switch of TEK plug-ins. Isn't it important to have very good quality caps there ?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read