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DiscoverCircuits.com  --   Dave's Circuits
Circuits designed by David Johnson, P.E.

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Last Updated on:  06/17/2009 03:30:40 PM

Audio Amplifiers   Active Filters: Low Pass

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AUDIO AMP + 3KHz FILTER
This circuit is the audio amp section for a complete optical transmitter.   The circuit amplifies and filters the voice audio signals from an electret microphone.  The circuit is described in more detail in the receiver section of Dave Johnson's Handbook of Optical Through the Air Communications.

Circuit Optical through the Air Transmitter designed by Dave Johnson, P.E. (June 4, 2000)

Audio Amplifiers   Active Low Pass Filters
Master Schematic Category List - David A. Johnson, P.E.
 
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