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

Master Category List - Dave's Circuits
Last Updated on: Friday, April 25, 2008 04:12 PM


Audio Amplifiers   Active Filters: Low Pass
 
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.

Click on Drawing Below to view PDF version of Schematic

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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