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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, June 01, 2021 03:23 PM


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Active Filter Circuits
Circuits designed by David Johnson, P.E. :
125Khz Ultra Pure Sine Wave Signal Source

3Khz Filter + Audio Amplifier

Active High Pass Filters

Collection Active High Pass Filters

Low Pass Filter, 3Khz, with an Audio Amp

 


 

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Copyright  January, 1998 - June, 2021     David A. Johnson  All Rights reserved. 
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