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Tester

7 Simple Continuity Tester Circuits Explained

Last Updated on June 8, 2026 by Swagatam 43 Comments

simplecontinuitytestercircuit

If you are looking for a simple circuit to test continuity of wires and long conductors, the explained 7 easy to build continuity circuits are the ones which you can try and might fulfill your requirement. What is a Continuity Tester A continuity tester is a device which is used for identifying the correct continuity […]

Filed Under: Meters and Testers Tagged With: Circuits, Continuity, Explained, Simple, Tester

LM317 IC Tester Circuit – Sort Out Good ICs from Faulty Ones

Last Updated on June 8, 2026 by Swagatam 7 Comments

LM317 Tester

Here is simple but handy testing circuit for LM317 adjustable voltage regulator IC. I am sure it can be used to test other similar ICs like LM117, LM158, LM358 etc. The circuit is pretty straightforward. The circuit is based on normal configuration of adjustable voltage regulator. How it Works For details follow https://www.homemade-circuits.com/2011/12/how-to-build-simplest-variable-power.html A DPDT […]

Filed Under: Meters and Testers Tagged With: Faulty, Good, LM317, Ones, Sort, Tester

Simple MOSFET Tester and Sorter Circuit

Last Updated on June 8, 2026 by Swagatam 18 Comments

MOSFET TESTER

This simple MOSFET tester does a quick job of testing both enhanced mode type N and P-channel mosfets. It checks for shorts between gate, drain and source. Designed By: Henry Bowman It also distinguishes between N and P-channel mosfets. Once the connections are correctly made to the mosfet, all testing is done without reversing connections. […]

Filed Under: Meters and Testers Tagged With: MOSFET, Simple, Sorter, Tester

Simple Transformer Winding Tester Circuit

Last Updated on June 8, 2026 by Swagatam 14 Comments

Test Transformer

This test set is primarily designed to test step-down, step-up transformers, for open and shorted winding. It can determine if the device under test has a low resistance to ac current. It can also measure the dc current resistancein ohms. By Henry Bowman Introduction The test set uses a 16 VAC, 60hz signal to determine […]

Filed Under: Meters and Testers Tagged With: Simple, Tester, Transformer, Winding

Capacitor Leakage Tester Circuit – Find Leaky Capacitors Quickly

Last Updated on June 8, 2026 by Swagatam 12 Comments

capacitor test

This simple capacitor tester is capable of testing leaky electrolytic capacitors in the range of 1uf to 450uf. It can test large start and run capacitors as well as 1uf miniature capacitors rated at 10v. Once you understand the timing cycle, you can test down to 0.5uf and up to 650uf. By Henry Bowman How […]

Filed Under: Meters and Testers Tagged With: Capacitor, Capacitors, Find, Leakage, Leaky, Tester

Remote Control Infrared Tester Circuit

Last Updated on June 8, 2026 by Swagatam 30 Comments

remote etster circuit

We all use remote control handsets for controlling various household devices such as TV, AC, Music systems, curtains etc, and sometimes we seem to have problems with these devices, or even a newly purchased remote controller unit occasionally seem to malfunction, and identifying the issue becomes quite difficult for us. This simple 2 transistor infrared […]

Filed Under: Meters and Testers Tagged With: Control, Infrared, Remote, Tester

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