Electronics Projects.

Updated Dec 13, 2021.




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 Some PIC circuits : December 9, 2014
     SMD Holding Device :Jan. 2007
     Some DDS circuits :Updated December 9, 2014
     Home Made Test Equipments :Updated Dec 13, 2021
    SMD Test Tweezers
     Audio Equalizer
     Crystal Filters
     Low Noise Audio Preamplifier : Updated May 4, 2011
     Audio Switchbox