|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum |
  |
|
|
|
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 |
 |
|
|
Thread Tools | Search this Thread |
4th March 2004, 03:13 PM
|
#1 |
|
diyAudio Member
Join Date: Apr 2002
Location: Belleville, IL.
|
Large caps in PSU without choke?
Hi All,
I'm getting ready to rebuild my SE EL84 amp onto a nicer chassis and I have a question. I have a pair of dual section Elna Cerafine 220uF/450volt caps that I would like to use. Since I'm not using a choke in the PSU I should be able to use them shouldn't I? I have been using 32uF/500 volt dual section caps. Thanks.
__________________
Gavin |
|
|
4th March 2004, 03:47 PM
|
#2 |
|
diyAudio Member
Join Date: Jan 2003
Location: Sweden
|
Tube rectifier? I have 2x2200uF 400VDC in my amp with a SS-rectifier. Works great.
|
|
|
|
4th March 2004, 04:58 PM
|
#3 | |
|
diyAudio Member
Join Date: Jan 2003
Location: Milwaukee, WI
 
|
Quote:
|
|
|
|
|
4th March 2004, 05:46 PM
|
#4 | |
|
diyAudio Member
Join Date: Jan 2003
Location: Sweden
|
Quote:
|
|
|
|
|
4th March 2004, 07:54 PM
|
#5 |
|
diyAudio Member
Join Date: Jan 2003
Location: Milwaukee, WI
|
No, but I can hear the death screams of your power transformer's winding (unless it's hideously overrated) from here.
Tim |
|
|
|
4th March 2004, 09:46 PM
|
#7 |
|
diyAudio Moderator Emeritus
Join Date: Jan 2003
Location: Near London. UK
|
A GZ34 is only rated for maximum reservoir capacitance of 60uF. If you put 220uF directly on its output, the ripple current will quickly kill it. However, there's nothing to stop you using a 68uF as a reservoir (modern capacitors are far closer tolerance, so the slight, but controlled increase will be OK). You could then follow that with RC smoothing using your 220uF capacitors.
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference... |
|
|
|
4th March 2004, 10:12 PM
|
#9 |
|
diyAudio Member
Join Date: Sep 2003
Location: Alps:Tube amp designs over 150W, SMPS guru.
|
Hi there.........really there's no need for so much cap/Joules...that sort of value sits in power drives.
rich |
|
|
|
4th March 2004, 10:59 PM
|
#10 | |
|
diyAudio Member
Join Date: Dec 2002
Location: West London
|
Capacitors
Quote:
If you're retaining the GZ34 why not upgrade to capacitors to motor runs ? 30uF 440V AC are easily obtainable and cheap . An improvement over electrolytics , as long as your chassis is big enough to house them... 316a |
|
|
|
|
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Large caps | Stuart Easson | Swap Meet | 26 | 25th March 2009 03:57 AM |
| Paralleling small value caps with large value PS caps | xyrium | Power Supplies | 16 | 14th October 2005 04:06 PM |
| Large PSU caps for sale. | jleaman | Swap Meet | 3 | 23rd October 2004 04:28 AM |
| Adding large caps? | Rino odorico | Everything Else | 6 | 13th September 2002 10:16 PM |
| New To Site? | Need Help? |
