Posted on Nov 18, 2012

Six components can configure a circuit whose output voltage is proportional to its input frequency. The average current (hvc from the 40106 Schmitt trigger inverter`s ground pin 8 is linearly dependent on the frequency at which CO is discharged into the op amp`s summing junction.

Click here to download the full size of the above Circuit.

The op amp forces this current to flow through the 13.33-Kfl feedback resistor, producing a corresponding voltage drop. This frequency-to-voltage converter yields 0 to -10 V output with 0 to 10kHz input frequencies.

Leave Comment

characters left:

New Circuits



Popular Circuits

Audio VU Level Meter Circuit with LM324
free energy generator from a candle
rolling shutter motor control circuit
A poormans oscilloscope
Guitar Amplifier
Research and Development
5 Watt Class-A Audio Amplifier Circuit
Solar iPod Charger
Bank the Chamber of Secrets to prevent security wireless transmitter circuit diagram