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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Hafler DH200 help, please! posted by dd on September 17, 2001 at 17:36:10:
I don't have any Haflers, but I've built a bunch of amps over the years that use Hitachi power MOSFETs for output devices.Just for starters:
- Are you sure it's not oscillating?
- It sounds like you're saying the bias current adjustment range is different from your expectations. what range should it be? For the Hitachi parts, the zero tempco point is around 100mA per device. For six output devices total per channel (3 paralleled per supply rail), that's about 300mA out of each rail for the output devices
Michael
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Follow Ups
- Re: Hafler DH200 help, please! - mlloyd1 07:50:44 09/18/01 (6)
- Re: Hafler DH200 help, please! - dd 09:28:09 09/18/01 (5)
- Re: Hafler DH200 help, please! - MikeCh 13:04:53 09/18/01 (3)
- Re: Hafler DH200 help, please! - dd 20:31:24 09/18/01 (2)
- Re: Hafler DH200 help, please! - MikeCh 14:00:31 09/19/01 (1)
- Re: Hafler DH200 help, please! - dd 14:14:57 09/19/01 (0)
- Re: Hafler DH200 help, please! - mlloyd1 13:03:33 09/18/01 (0)
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