|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: Re: Any experience on 2SJ200 and 2SK1529 ? posted by PhilH on January 5, 2002 at 16:09:18:
Put an small plastic capacitor
parallell over feedback resistor (goes from output to inputstage)
220pF or 470pF
See if it gets better
if so you have found that amp was unstable.
Then try to lower the value of plastic capacitor,
until amp begins to oscillate/be unstable again.Then choose a final capacitor 1.5 x value when it
started oscillate, approximative, these values
do not have to be exact.Amp can also begin to be unstable when connecting
Loudspeaker, Then you must put a Zobel-filter,
parallell to LSP.
I think you know about those. One resistor+one Capacitor in series.
Amp fixing
groman
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Oscillation. Could be. A cure. - groman 22:49:31 01/05/02 (10)
- Thanks for the advice - akltam 01:17:37 01/06/02 (9)
- Re: Thanks for the advice - J .Santos 11:44:01 01/06/02 (5)
- Thermal Runaway - djk 22:28:43 01/06/02 (3)
- What about the quality of these BUZ ? - akltam 03:50:27 01/07/02 (2)
- Re: What about the quality of these BUZ ? - djk 02:44:42 01/08/02 (1)
- Thanks. (NT) - akltam 04:36:35 01/08/02 (0)
- Thanks ! - akltam 21:49:17 01/06/02 (0)
- djk is right! A resistor to Gate. - groman 09:39:45 01/06/02 (0)
- Gate Resistors? - djk 07:21:58 01/06/02 (1)
- Re: Gate Resistors? - akltam 21:37:58 01/06/02 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
