February 2014 Blog Posts (1)

CODE PRACTICE OSCILLATOR powered by any computer MIC JACK - no batteries needed - EVER -

Every computer MICROPHONE INPUT jack,  has its own voltage and current that is already built inside it, in order to power Electret Mics.  By modifying a very simple and low voltage square wave generator circuit to make use of this MIC VOLTAGE, a very simple and NO BATTERY NEEDED -  EVER -   code practice oscillator can be made using this circuit, the MIC JACK,  and  an AUDIO to MIDI technique to regenerate the original input…

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Added by Chuck aa0hw on February 9, 2014 at 2:30pm — 7 Comments

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