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Old 14th January 2008, 03:32 PM   #1
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Exclamation Opto FET compressor/limiter

I need a schematic of an audio compressor/limiter that uses a FET optocoupler like H11F1M used to control an automatic voltage amplifier or automaitc gain control. This will be used as a mic preamplifier.

Regards,

Fernando
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Old 14th January 2008, 06:36 PM   #2
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There are several apps at THAT corporation's site.

Jan Didden
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Old 14th January 2008, 07:43 PM   #3
cuibono is offline cuibono  United States
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also look up prodigy-pro forum:

http://www.prodigy-pro.com/forum/ind...5112b01722a8d6
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Old 17th January 2008, 06:15 PM   #4
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Default Limiters

I found I could not get acceptable sound quality from FET limiters and switched to opto resistive ones several years ago. Using Vactec devices. THD in hard limiting dropped from the 0.2% range down to the .01% range. And even to get the 0.2% range with FETs took tricks that are considered proprietary.
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