Rms-to-dc converter


Posted on Nov 29, 2012

The DC output at Pin 1 vanes linearly with the RMS input at Pin 4. 2 CT is tweaked until the svnc signal is in phase with the AC signal. An ac voltmeter may be easily constructed. Simplicity of the circuit and low component count make it particularly attractive. The demodulator output is a full-wave rectified signal from the ac input at Pin 4.


Rms-to-dc converter
Click here to download the full size of the above Circuit.

The dc component on the rectified signal at Pin 5 varies linearity with the rms input at Pin 4 and thus provides an accurate rms-to-dc conversion at the output of the filter (Pin 1). CT is a variable capacitor that is tweaked until the oscillator signal to the sync input of the demodulator is in phase with the ac signal at Pin 4.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Fighting Robot circuit
PC interfaced Security System
Railway Grade Crossing Circuit
Randomness
AVR Interrupts and binary counter
arduino + optotriac based ac dimmer blinking severely
How to Increase TDA2030 Amplifier Gain PCB
Flyback Converters for Dummies
Smart power grid demands innovative design
power supply circuit
Touch fan speed control circuit eight stalls



Top