Music signal rectification to control 2N2219 NPN transistor from speaker output

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#1 21672773 14 Nov 2014 07:50

Bahman Mohammadhoseini Bahman Mohammadhoseini

Anonymous

Post #1
21672773 14 Nov 2014 07:50

Hello,everybody;

I want to take a sample of a music signal(voltage) from a speaker of a player or an amplifier
and rectify it so that it can ON a 2N2219 NPN transistor and OFF that transistor when the
music is not played and off.

Would you please give me a very practical and effective circuit schematic for that?

Thanks,
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#2 21672774 14 Nov 2014 19:21

Neil Mula Neil Mula

Anonymous

Post #2
21672774 14 Nov 2014 19:21

Hi Bahman,

Have you tried to check at www.schematics.com

like this one -> http://schematics.com/project/audio-amplifier-10124/

Most them are well developed and modified.

Hope it helps.

Best,
Neil
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#3 21672775 15 Nov 2014 12:43

Bahman Mohammadhoseini Bahman Mohammadhoseini

Anonymous

Post #3
21672775 15 Nov 2014 12:43

Hi Neil,

I checked that site but there is not my asked circuit schematic.

Thanks,
#4 21672776 17 Nov 2014 19:13

Neil Mula Neil Mula

Anonymous

Post #4
21672776 17 Nov 2014 19:13

Hi Bahman,

Try it here -> http://www.electroschematics.com/.

Hope it helps.

Best,
Neil
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Music signal rectification to control 2N2219 NPN transistor from speaker output

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