Category: Opamp-Circuits

Resistance Measurement Analog LED Meter

This is a LED Analog Meter, This can be used as a Resistance Meter and Low Impedance Voltmeter for Battery Levels. To (more…)

This is easy to rig millivolt source for field calibration or troubleshooting of 4-20 mA current loops. Here a Darlington pair is (more…)

When a Inverting Opamp Configuration is at a steady state, we say the Inverting Input is at a Virtual Ground. That means (more…)

The proximity switch can work for a wide range of power, from 8v to 18v DC, D3 protects reverse power supply connections, (more…)

In this circuit we tackle the error indicated in the earlier Current Source. The LM336-2.5V eliminates the tiny error of the regulated (more…)

When you have to buffer and invert the polarity of mV input levels. This is the circuit you can use, as OP07 (more…)