Meter and Tester Circuits

Vehicle Speedometer Circuit for Precise Speed Measurements

by

One IC and a few external passive components are all that are needed to build a straightforward yet accurate analogue speedometer circuit at home. For showing speed, the speedometer is generally applicable to all two-wheelers, three-wheelers and even bicycles. Using Frequency to Voltage Converter In our last article we saw and discussed about these awesome … Read more

Measure AC Millivolts using this Circuit

by

In this piece, we examine a millivolt meter circuit built around an operational amplifier that is intended to precisely measure AC millivolts. Let’s examine the specifics through the explanation that follows. Measurements of DC potentials in the millivolt region could be made with the circuit below. With a calibration range of 1 mV at the … Read more