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Newly Updated Circuit Projects:

Simple IC Tester Circuit [Test Digital and Analogue ICs]

Last Updated on June 8, 2026 by Swagatam 3 Comments

Cable with banana pins and micro alligator clips

The IC Tester is simple to use. You don’t have any  switches to configure or lengthy test processes to complete. The universal IC Tester is a static tester, which means this does not dynamically test the IC’s operation. All ICs with up to 20 pins can be tested by this unit. ICs  with more than […]

Filed Under: Meters and Testers Tagged With: Analogue, Digital, Simple, Test, Tester

Dummy Load Circuit for Testing Power Supplies and Amplifiers

Last Updated on December 3, 2024 by Swagatam 34 Comments

dummy load circuit

In the following post I have explained two straightforward dummy load circuits: the first one can be used for testing high current power supplies, and the second design can be used for testing large power amplifiers. Suppose you have a 10 amp power supply and you want to confirm the 10 amp output through some […]

Filed Under: Power Supply Circuits Tagged With: Amplifiers, Dummy, Load, Power, Supplies, Testing

How to Make a Shunt Resistor

Last Updated on June 8, 2026 by Swagatam 6 Comments

shunt meter compressed

A shunt resistor is a very low value, high wattage resistor which is connected in parallel to a low range meter, so that it helps the meter to substantially increase its measuring capacity. Quite often you might find it hard to measure large currents with a contemporary multimeter. If you’ve ever considered buying an industrial shunt to address […]

Filed Under: Meters and Testers Tagged With: Resistor, Shunt

Exploring Current Mirror Circuits with Practical Designs

Last Updated on May 20, 2026 by Swagatam 6 Comments

a

In this post I have explained some important current mirror circuits, and how to design practical circuits using current mirror concepts. Current Mirror Definition A current mirror is a circuit that copies a current through one active device by regulating the current in another active device in the circuit, maintaining a constant output current independent […]

Filed Under: Electronics Theory Tagged With: Circuits, Current, Designs, Exploring, Mirror, Practical

RGB Light Strip Controller Circuits

Last Updated on June 8, 2026 by Swagatam 32 Comments

image5

In this post we are going to see how we can construct an RGB LED light strip controller circuit for PC cabinets and also for general decoration purposes. In this post we will construct a couple of RGB light strip controller designs, one for a PC cabinets and one for general purpose which can be […]

Filed Under: Lamps and Lights Tagged With: Circuits, Controller, Light, RGB, Strip

Microamp Meter Circuit

Last Updated on June 8, 2026 by Swagatam 18 Comments

microamp meter circuit compressed 1

A microamp meter or microammeter is a device that allows the user to measure extremely small current levels, in microamps, which is normally not possible to measure using conventional multimeters. A conventional panel meter or multimeter will not be able to properly measure currents of a few microamps or less. It is required to utilize […]

Filed Under: Meters and Testers Tagged With: Meter, Microamp

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