UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Components and Circuits

Notices

Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

Reply
 
Thread Tools
Old 15th Aug 2019, 10:02 am   #21
turretslug
Nonode
 
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 2,766
Default Re: Crumbly RS capacitors.

That triangular logo was certainly used by Matsushita/Panasonic. I can't remember whether "native" Panasonic electrolytics used that colour scheme at the time (I don't think so), but it is the same as that used by the Dubilier electrolytics that were previously supplied by RS with their logo in place of the Dubilier brand.

Perhaps the Matsushita/Panasonic executives had sufficient clout to enforce supplementing the RS logo with their own to distinguish them from these previous similar Dubilier components?

Edit; It may even be that these latter-day Dubilier-brand capacitors were themselves re-badged Matsushita/Panasonics, perhaps the colour scheme did originate with them after all. Such is the machination of global supply!

Last edited by turretslug; 15th Aug 2019 at 10:08 am.
turretslug is offline   Reply With Quote
Old 15th Aug 2019, 12:25 pm   #22
dazzlevision
Nonode
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 2,244
Default Re: Crumbly RS capacitors.

My new old stock.

Insulation resistance 4MOhms at 250Vdc. Capacitance 1.15 uF.

“For display purposes only”!
Attached Thumbnails
Click image for larger version

Name:	2241A9A5-864F-4290-8EA9-FA40BF045E37.jpg
Views:	86
Size:	27.2 KB
ID:	188360  
dazzlevision is offline   Reply With Quote
Old 15th Aug 2019, 12:31 pm   #23
dazzlevision
Nonode
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 2,244
Default Re: Crumbly RS capacitors.

Dubilier and Matsushita co-branded electrolytic, from 1981.

By that time, Dubilier (the UK company) seemed to be just a component supplier, but also owned Greenpar Connectors of Harlow and Kenneth E Beswick (of “Alert” branded fuses fame) of Frome.
Attached Thumbnails
Click image for larger version

Name:	4F11BCBC-96A8-466F-B779-79236D84AF97.jpg
Views:	64
Size:	23.3 KB
ID:	188361   Click image for larger version

Name:	16F4F8D8-943C-4FD1-9744-59985EE7D02F.jpg
Views:	62
Size:	20.4 KB
ID:	188362  

Last edited by dazzlevision; 15th Aug 2019 at 12:35 pm. Reason: Added text.
dazzlevision is offline   Reply With Quote
Old 15th Aug 2019, 2:31 pm   #24
Welsh Anorak
Dekatron
 
Welsh Anorak's Avatar
 
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 4,141
Default Re: Crumbly RS capacitors.

I bought my bench PSU from RS many years ago and under the sticker it says Thandar. No bad thing as it's still going strong.
However I was dismayed to see Multicomp capacitors (the ones with the diamond logo) under the 'RS Pro' banner. We bought some by mistake insted of our usual Panasonics, and after one failure measured the ESR on the remainder. They were all far too high, and ended up in the bin.
__________________
Glyn
www.gdelectronics.wales
Welsh Anorak is offline   Reply With Quote
Old 15th Aug 2019, 2:59 pm   #25
julie_m
Dekatron
 
Join Date: May 2008
Location: Derby, UK.
Posts: 7,306
Default Re: Crumbly RS capacitors.

That's a Matsushita logo visible on the upper one, so yes.
__________________
If I have seen further than others, it is because I was standing on a pile of failed experiments.
julie_m is offline   Reply With Quote
Old 15th Aug 2019, 4:07 pm   #26
ms660
Dekatron
 
ms660's Avatar
 
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 8,019
Default Re: Crumbly RS capacitors.

Some Dubilier and Radio Spares mixed dielectric capacitors look remarkably similar, maybe a Dubilier/RS connection for the ones in the OP's photo's?

Lawrence.
ms660 is offline   Reply With Quote
Old 15th Aug 2019, 7:06 pm   #27
dazzlevision
Nonode
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 2,244
Default Re: Crumbly RS capacitors.

Quote:
Originally Posted by ms660 View Post
Some Dubilier and Radio Spares mixed dielectric capacitors look remarkably similar, maybe a Dubilier/RS connection for the ones in the OP's photo's?

Lawrence.
Dubilier made the Radiospares mixed dielectric capacitors for many years. The RS ones were all grey for many years but then changed to white, until they were replaced by those yellow polypropylene film types..
dazzlevision is offline   Reply With Quote
Old 15th Aug 2019, 7:11 pm   #28
ms660
Dekatron
 
ms660's Avatar
 
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 8,019
Default Re: Crumbly RS capacitors.

I remember those mixed dielectric capacitors in TV's, SC ones.

Lawrence.
ms660 is offline   Reply With Quote
Old 15th Aug 2019, 7:20 pm   #29
McMurdo
Dekatron
 
McMurdo's Avatar
 
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 3,528
Default Re: Crumbly RS capacitors.

I steer clear of Multicomp capacitors, it's actually Farnell's equivalent of RS-Pro, but I do know like RS, Farnell source multicomp capacitors from more than one supplier. RS-Pro capacitors come branded as Jack-con, I dont use them in smpsu applications but have found them fine in conventional power supplies.

The lilac capacitors from RS seem to come (did come) in 2 different shades; those that resembled Dubilier and those that resembled Matsushita. I did wonder if they were connected in any way apart from the lilac colour!

Farnell later stocked the matsushita caps but in blue, and Maplin stocked the dubilier ones in red and dark violet.

I sometimes buy Dubilier from Mouser but these days they are known as CDE.
__________________
Kevin
McMurdo is offline   Reply With Quote
Old 15th Aug 2019, 8:14 pm   #30
whiskas
Hexode
 
whiskas's Avatar
 
Join Date: Mar 2016
Location: Knutsford, Cheshire, UK.
Posts: 435
Default Re: Crumbly RS capacitors.

Yes I've seen many of those grey caps in a bad way. Replace on sight for sure.
The later grey plastic moulded RS caps were better.
__________________
...where on earth did that spring/screw go??
whiskas is offline   Reply With Quote
Old 15th Aug 2019, 8:44 pm   #31
vidjoman
Nonode
 
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 2,138
Default Re: Crumbly RS capacitors.

In many American jukeboxes there are Cornell Dubilier caps and usually pale green. I’ve found a few faulty ones but usually because of where they were fitted next to a high heat source. Most are 50/60 years old and still in good condition. I guess that the CDE caps are the current manufacturers version.
vidjoman is offline   Reply With Quote
Old 15th Aug 2019, 9:07 pm   #32
evingar
Octode
 
evingar's Avatar
 
Join Date: Oct 2003
Location: Newbury, Berkshire, UK.
Posts: 1,657
Default Re: Crumbly RS capacitors.

Quote:
Originally Posted by McMurdo View Post
I steer clear of Multicomp capacitors, it's actually Farnell's equivalent of RS-Pro, but I do know like RS, Farnell source multicomp capacitors from more than one supplier. RS-Pro capacitors come branded as Jack-con, I dont use them in smpsu applications but have found them fine in conventional power supplies.

The lilac capacitors from RS seem to come (did come) in 2 different shades; those that resembled Dubilier and those that resembled Matsushita. I did wonder if they were connected in any way apart from the lilac colour!

Farnell later stocked the matsushita caps but in blue, and Maplin stocked the dubilier ones in red and dark violet.

I sometimes buy Dubilier from Mouser but these days they are known as CDE.
Any experience of Wurth caps ? I don't think they have doing them long , traditionally they have been mainly an inductor manufacturer. They do an interesting range of Aluminium Organic Polymer Capacitors that use solid electrolyte so don't dry out.


https://www.we-online.com/web/en/pas...ion_105536.php
__________________
Chris
evingar is offline   Reply With Quote
Old 15th Aug 2019, 9:09 pm   #33
dazzlevision
Nonode
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 2,244
Default Re: Crumbly RS capacitors.

CDE - Cornell Dubilier Electronics is a different company based in North America. The British Dubilier company (Dubilier Condenser Company) was probably established by “Mr Dubilier” in the early 20th century, but apart from that, was a separate entity. The same applies to the separate USA and UK Westinghouse companies, originally established by George Westinghouse (an American).
dazzlevision is offline   Reply With Quote
Old 15th Aug 2019, 10:05 pm   #34
McMurdo
Dekatron
 
McMurdo's Avatar
 
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 3,528
Default Re: Crumbly RS capacitors.

William Dubilier of the Dubilier Condenser Company of New York. For his contribution to war work, after the first world war he was offered an honorary knighthood by the UK which he declined to accept.
The british arm of dubilier no longer exists, the present incarnation makes filters and parts for aerospace and the military. The brand name Dubilier is now owned by Abacus. If you want genuine dubilier electrolytics it's CDE or nobody!
Wikipedia has a little on the man in question, he died in 1969 in Palm Beach.
__________________
Kevin
McMurdo is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 11:52 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2002 - 2019, Paul Stenning.