In this post we discuss how to build a simple crystal tester circuit using ordinary parts like transistors, resistors, diodes and capacitors. What is a Crystal A crystal can be […]
Measure Low Resistances below 1 Ohm with this Circuit
The low resistance meausring circuit explained below can be used for measuring all resistances below 1 ohm with extreme accuracy. The resistance to be measured can be as low as […]
Test Static Electricity with this Electrometer Circuit
Since modern electronics involves a lot a CMOS ICs and power devices like MOSFETs, static electricity can be a reason of some concern. Because a static charge can easily kill […]
Universal BJT, JFET, MOSFET Tester Circuit
This useful transistor tester allows the user to quickly check the functionality of an NPN/PNP transistor, JFET or (V)MOSFET as well as determine the orientation of their terminals, or the […]
3-Digit LED Capacitance Meter Circuit
This project is yet another test equipment that can be extremely handy to any electronic hobbyist, and building this unit can be a lot of fun. A capacitance meter is […]
Match Transistor Pairs Quickly using this Circuit
In many critical circuit applications, like power amplifiers, inverters, etc it becomes necessary to use matched transistor pairs having identical hFE gain. Not doing this possibly creates unpredictable output results, […]