The semiconductor tester circuit explained below performs continuity tests on SCRs, bipolar transistors, and diodes. How the Circuit Works A squarewave oscillator with a frequency of about 350 Hz is produced […]
AC Ammeter Circuit for Measuring Current across 220 V Appliances
In this article we learn how to build a simple AC ammeter circuit which can be used for checking the current consumption of household 220 V or 120 V appliances. […]
Bicycle Speedometer Circuit
In this article we will learn how to build a simple bicycle speedometer circuit which can be used to measure the speed of the bicycle. What is a Bicycle Speedometer, […]
High Voltage Meter Circuit [for Measuring 10kV]
In this article we discuss a simple high voltage meter circuit which can be used for measuring extremely high voltages in the order of many 1000s of volts. The circuit […]
Light Meter Circuit with LED Bar Graph
In this post we will discuss 3 different light meter circuits for measuring power of light. In the first method we will use only a solar cell and a multimeter, […]
LED Oscilloscope Circuit
The simple LED oscilloscope circuit explained in this article can be used for analyzing low frequency waveform through a 10 x 10 LED matrix display. Due to the involvement of […]