Good replacements for Black Gate NH caps in tube amp? - 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 17th December 2011, 08:55 AM   #1
renton1 is offline renton1  Germany
diyAudio Member
 
Join Date: Jul 2010
Default Good replacements for Black Gate NH caps in tube amp?

Hello,

Im just buliding the following amp and cant get the needed Black Gate NH (100uf/160V) caps. http://www.triodedick.com/ceasar_2/c...versterker.GIF

Positions are C6 & C7.

Are there some good non polarized replacements available or do some shops still provide the BGs ?

Many thanks and best,

Rents
  Reply With Quote
Old 17th December 2011, 09:45 PM   #2
diyAudio Member
 
indianajo's Avatar
 
Join Date: Jan 2010
Location: Jeffersonville, Indiana USA
Knowing what continent you are one would help the helpers. Non-polar electrolytic caps are getting rare in the US, newark.com doesn't have them. They do list some "xxx V" parts, but when they come in they have a plus marked on one end. Just a case of United Chemicon saving money on ink. Mouser.com has a selection of NP capacitors, but you have to click capacitors and aluminum electrolytic before the computer will let you see them. I believe they had 100 uf and 220 uf last time I looked, but you will probably have to go up on the voltage. FIlm caps in the 50 uf size could be paralleled, but they come in a 660 VAC rating and are about 8 cm dia and about 15 cm tall. (genelec brand) I used some on my organ at 450 VDC.
As far as "black gate" I have never run across these anywhere among newark,mouser, tubesandmore.com, triodeelectronics.com. I look at package size (some are too tall), ESR, life ratings in hours, and leakage at end of life notes since some manufacturers allow worse performance at their quoted "end of life" test. Some countries of origin seem to have more "tolerance" of out of compliance products than others. I have been happy with the Japanese, Malaysian, Thai and US origin electrolytic capacitors I have been getting from Nichicon, Panasonic, Rubycon. I haven't bought any NP's yet. United Chemicon and CDE caps have been ******e in origin.
__________________
Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,1.3K, SP2-XT's, T-300 HF Proj's, Steinway console, Herald RA88a mixer, Wurlitzer 4500, 4300

Last edited by indianajo; 17th December 2011 at 09:59 PM.
  Reply With Quote
Old 17th December 2011, 10:25 PM   #3
sasha70 is offline sasha70  United Kingdom
diyAudio Member
 
Join Date: Jul 2011
Location: Newtownards
Hi Rents, my understanding of this schematic is two polar capacitor connected in parallel in reverse polarity, to create non polar capacitor.
Regards.
  Reply With Quote
Old 18th December 2011, 12:10 AM   #4
diyAudio Member
 
Join Date: Jul 2003
Location: Columbus, Mississippi
The Black Gate N series was non-polar.

As a sub, I'd strongly consider DIY HiFi Supply's Obbligato PSU caps... see here:

Obbligato PSU Film 100uF 400V | Diy HiFi Supply

Greg in Mississippi
__________________
Everything matters!
  Reply With Quote
Old 18th December 2011, 10:30 AM   #5
renton1 is offline renton1  Germany
diyAudio Member
 
Join Date: Jul 2010
Mamy thanks for the answers.
I think, Im going the obbligato route. Are the some suplliers out in Europe?
  Reply With Quote
Old 18th December 2011, 11:20 AM   #6
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Quote:
Originally Posted by sasha70 View Post
Hi Rents, my understanding of this schematic is two polar capacitor connected in parallel in reverse polarity, to create non polar capacitor.
I don't think so. Not only doesn't that make a nonpolar cap, that will make an explosion.

No reason that you'd need a nonpolar cap in that position- the cathode never goes negative. Use a good quality polar electrolytic, preferably 105 degree rated. Bypass with a smaller film cap if that makes you feel better.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  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
WTB Black Gate NH 160V 100uf (or 220uf) caps dcathro Swap Meet 8 9th March 2011 08:25 PM
WTB:Black Gate Caps Fast996 Swap Meet 2 11th November 2008 05:45 AM
Black Gate C - rather good fmak Parts 0 27th March 2006 09:43 AM


New To Site? Need Help?

All times are GMT. The time now is 12:46 AM.


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