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Simple VCO

Based on a Labs project | October 2011 | Find it here
Simple VCO
The Type 555 chip must be one of the most popular ICs used in electronics. Here it is used as a vco (voltage controlled oscillator). The circuit depends on the fact that a control voltage on the CV input can vary the internal divisor. The consequent shift of the threshold causes an alteration of the change-over points, which result in a change in the oscillator frequency.
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