DIY Audio Projects Forum
 NEW  Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 28 Nov 2014, 04:31

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 25 posts ]  Go to page 1, 2, 3  Next
Author Message
PostPosted: 03 Jan 2009, 11:22 
Offline
Moderator
User avatar

Joined: 02 Sep 2008, 14:34
Posts: 514
Location: Rochester, NY
Attachment:
100_0723.jpg
Need some help identifying these green caps. The top one is labeled .22J 100HT. Bottom one is .082J 100HT. I am hopping that the 100 is the volts indicator no clue what the HT is. .22 are the sugnifficant figures, J should be 3 zeros. Not sure what the starting capacitance point is; pico, micro or what.

Please help me.

Thanks,

Alan


This post has a file attachment. Please login or register to access it. Only Registered Members may view attached files.


_________________
Cheers, Alan
.
Allied 935 Integrated | Integra CDC 3.1 | SOTA Sapphire-RG301-Grado Gold 1 | Soundwave Soliloquy Series I


Top
 Profile  
 
PostPosted: 03 Jan 2009, 11:50 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4288
Location: Winnipeg, CANADA
Hi Alan,
Those are likely Mylar Capacitors. The markings on them do not seem to be standard.
J seems like it would be the tolerance +/-5%
I have never seen the value marked with a decimal.
Typically they are marked 220J=22pF +/-5% or 223J=22nF +/-5%
Sorry, this is not much help.

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 03 Jan 2009, 11:55 
Offline
Moderator
User avatar

Joined: 02 Sep 2008, 14:34
Posts: 514
Location: Rochester, NY
gmilitano wrote:
Sorry, this is not much help.

Gio.

I am disappointed ;). Of course I am kidding in a big way.

You are supposed to be a help when I am stumped, not be just as stumped. :censored: !!

Thanks for trying. Maybe one of the other Guru's can help us.

Alan

_________________
Cheers, Alan
.
Allied 935 Integrated | Integra CDC 3.1 | SOTA Sapphire-RG301-Grado Gold 1 | Soundwave Soliloquy Series I


Top
 Profile  
 
PostPosted: 03 Jan 2009, 12:16 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4288
Location: Winnipeg, CANADA
I think those may be OEM markings so you may have a hard time figuring it out.
Where were you planning on using them?

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 03 Jan 2009, 12:37 
Offline
Moderator
User avatar

Joined: 02 Sep 2008, 14:34
Posts: 514
Location: Rochester, NY
Gio,

I was going to post an update but you beat me to it. Very easily could be OEM. They came out of an Altec Lansing Media Sub Woofer. I was going to use them as the bypass caps on my 6t9. Mark's specs call for 50V .22uF caps. I am tempted to try them since they say .22 on them. What do you think?

Alan

_________________
Cheers, Alan
.
Allied 935 Integrated | Integra CDC 3.1 | SOTA Sapphire-RG301-Grado Gold 1 | Soundwave Soliloquy Series I


Top
 Profile  
 
PostPosted: 03 Jan 2009, 12:54 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4288
Location: Winnipeg, CANADA
No way they are 0.22uF ... too small. I am thinking they are 0.0022uF. Where did Mark use the caps? 50V seems low.

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 03 Jan 2009, 13:19 
Offline
Moderator
User avatar

Joined: 02 Sep 2008, 14:34
Posts: 514
Location: Rochester, NY
gmilitano wrote:
No way they are 0.22uF ... too small. I am thinking they are 0.0022uF. Where did Mark use the caps? 50V seems low.

Gio,

I can't fool you. Although, I was not really trying. I went from memory, I just rechecked the schematic, and the Voltage should be 100. Mark did spec these as .22 (I think for better base response). The space on the board is not very large. They mount in C101. Very small space when compared to C102 on the PCB.

I have some of the Paper in Oil Caps that Uriah sent me but not sure I want to use those yet.

Alan

_________________
Cheers, Alan
.
Allied 935 Integrated | Integra CDC 3.1 | SOTA Sapphire-RG301-Grado Gold 1 | Soundwave Soliloquy Series I


Top
 Profile  
 
PostPosted: 03 Jan 2009, 13:48 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4288
Location: Winnipeg, CANADA
Ok, C101 is the input (DC blocking) cap. C101 and C102 should be decent quality caps. A generic 0.22uF polypropylene would be a reasonable choice for C101. Ri sent me some of those PIO caps as well and they would not be wasted if you used them for C101. They may be a tight fit, but if you can get them in, that is the perfect application for them.

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 03 Jan 2009, 14:20 
Offline
Moderator
User avatar

Joined: 02 Sep 2008, 14:34
Posts: 514
Location: Rochester, NY
gmilitano wrote:
Ri sent me some of those PIO caps as well and they would not be wasted if you used them for C101. They may be a tight fit, but if you can get them in, that is the perfect application for them.

Gio,

Tight fit is an understatement. I thought the board looked messy now. It will look like the bride of freakin' Frankenstein after I add those to it. I'll give it a go and report back with pics. Thanks for the help.

Alan

_________________
Cheers, Alan
.
Allied 935 Integrated | Integra CDC 3.1 | SOTA Sapphire-RG301-Grado Gold 1 | Soundwave Soliloquy Series I


Top
 Profile  
 
PostPosted: 03 Jan 2009, 20:49 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 20:12
Posts: 945
Location: Houston, TX
Cool! Glad you will give them a try. They will work in that situation. I think its probably perfect for them. Made a positive difference in sound for me.
Actually now that I think about it thats not where I used them, so now I am really interested to hear your impressions.
Ri

_________________
DIY Lightspeed Passive Attenuator


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 25 posts ]  Go to page 1, 2, 3  Next

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Opamp Projects :: DIY Phono Projects :: DIY Cable Projects :: HI-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy