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Circuits designed by David Johnson, P.E.
Last Updated on: Thursday, March 22, 2012 11:05 AM

Master Category List - Dave's Circuits

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Dave's Filter Circuits:  Band Pass Filters     High Pass Filters     
Low Pass Filters     Notch Filters
  • ULTRA PURE 125KHz SINE WAVE SIGNAL SOURCE
    For some RFID systems operating at 125KHz, a very low distortion signal source reference is needed.  The circuit shown on this page produces a 10-volt peak-to-peak signal into a 50-ohm load, with a distortion of only 0.01%. 

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