Isolated Voltage Sensors for Monitoring Power Supply

Isolated Voltage Sensors for Monitoring Power Supply
This is simple VCO ( voltage controlled oscillator) circuit , connected to your current instrumentation by an optoisolator, means that you can measure high voltages of your instrumentation more secure. The component values suit a 0  to 600 V input range (power dissipation in R1 and R2 set a limit on the input-voltage range). The circuit's linearity is not an issue, because you can linearize its output in software. (more…)