Opto FET compressor/limiter

[fjpompeo]

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

 

[jan.didden]

There are several apps at THAT corporation's site.

Jan Didden

 

[cuibono]

also look up prodigy-pro forum:

http://www.prodigy-pro.com/forum/index.php?sid=db49bd060d6b571e1c5112b01722a8d6

 

[dmfraser]

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.