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Tuesday, December 4, 2012

Elenco's PK-201 Experiment #35: Electronic Noisemaker

This experiment uses a variable resistor to change the frequency of the sounds; in addition, when the switch is turned on, the capacitance of the oscillator is increased because the capacitors (.005 and .047 microfarad) are in parallel, and this lowers the oscillator frequency.
 
 
Circuit
 

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