Frequency-to-volt age converter

Posted on Jun 30, 2012

This circuit converts frequency to voltage by taking the average dc value of the pulses from the 74121 monostable multivibrator. The one shot is triggered by the positive-going ac signal at the input of the 529 comparator. The amplifier acts as a dc filter, and also provides zeroing. The accuracy is 2% over a 5 decade range

Frequency-to-volt age converter
Click here to download the full size of the above Circuit.

The input signal to the comparator should Jbe greater than 0 volt peak-to-peak, and less than 12 volts peak-to-peak for proper operation.

Leave Comment

characters left:

A3 is Chip 529 comparator?   May 24, 2021

What is the A3 ? Is it 529 comparator as well? Thanks

New Circuits



Popular Circuits

Tron Disc with .NET Microframework
800W high power mosfet amplifier Schematic Diagram
Light dimmer circuit using DIAC and TRIAC
2 Watt FM Transmitter
1W Long Range FM Transmitter
microprocessor based frequency counter
Brain Wave Machine
555 tlc555 relay driver circuit
IR Widget Consumer infrared remote control capture and visualization
Dancing LEDs
Fred Nachbaurs Theremax modifications
LM723 Current Limiting Questions
Classic Schematics
AD1865 based audio DAC with I2S input and voltage output
Unsteady chain circuit diagram
2Y-Y-2 - connection four-speed motor contactor control circuit