Analog amp with optocoupler

lumanauw · 11th August 2008, 04:10 PM

Is it possible to use linear optocoupler like HCNR200 to make analog audio amp? From input transistor directly to B-E of final transistor?

Eva · 11th August 2008, 04:18 PM

Remember that practical output current is in the range of 5 or 10 microamperes.

lumanauw · 12th August 2008, 02:36 AM

You're right, the output current is small in the linear area.
How about using this diamond-buffer style booster?

11th August 2008, 04:10 PM	#1
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Analog amp with optocoupler Is it possible to use linear optocoupler like HCNR200 to make analog audio amp? From input transistor directly to B-E of final transistor?

11th August 2008, 04:18 PM	#2
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	Remember that practical output current is in the range of 5 or 10 microamperes. __________________ I use to feel like the small child in The Emperor's New Clothes tale

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