Semiconductor LEDs (Light Emitting Diodes) produce light when current flows through them. In comparison to conventional lighting sources, LEDs offer a number of benefits, including high energy efficiency, extended longevity, […]
DSO138: Best Small Oscilloscope for Electronic Hobbyists
An oscilloscope is a device that measures and analyses signals in circuits. It’s an indispensable equipment for everyone who works with electronic circuits since it enables them to see the […]
Semiconductor Tester Circuit [LED, Transistor, SCR Tester]
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 […]