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You are here: Home / Archives for Simple Circuits

Loop-Alarm Circuits – Closed-Loop, Parallel-Loop, Series/Parallel-Loop

Last Updated on September 25, 2020 by Matrix Leave a Comment

The article discusses a few simple loop based security alarm circuits, categorized under closed loop, parallel loop, and series/parallel loop. All these designs could be customized and used for a […]

Filed Under: Security and Alarm, Simple Circuits

Simple Touch Operated Potentiometer Circuit

Last Updated on May 28, 2020 by Matrix 2 Comments

In this touch operated potentiometer circuit we have two touch pads, which produce a slowly increasing voltage at the output when one touch pad is touched, and a decreasing voltage […]



Filed Under: Simple Circuits

10 Simple Unijunction Transistor (UJT) Circuits Explained

Last Updated on March 14, 2020 by Swagatam 2 Comments

In the earlier post we learned comprehensively about how a unijunction transistor works, in this post we will discuss a few interesting application circuits using this amazing device called UJT. […]

Filed Under: Mini Projects, Oscillator Circuits, Simple Circuits

Simple Ni-Cd Battery Charger Circuits Explored

Last Updated on November 5, 2020 by Swagatam 65 Comments

The post discusses a simple NiCd charger circuit with an automatic overcharge protection and a constant current charging. When it comes to correctly charging a Nickel-Cadmium cell, it is strictly […]

Filed Under: Battery Chargers, Mini Projects, Simple Circuits

2 Simple Fastest Finger First Circuits Explained

Last Updated on February 29, 2020 by Swagatam 4 Comments

The 2 simple fastest finger first indicator circuits presented here can be used for indicating which candidate was the first to press the answer button out of the 4 participating […]

Filed Under: Games, Simple Circuits

Simple Circuit Tester Probe – PCB Fault-Finder

Last Updated on February 23, 2020 by Swagatam 9 Comments

This simple circuit tester can be used for detecting short circuits, abnormal resistance conditions, continuity breaks etc inside an assembled circuit board or a PCB. The indication will be through […]

Filed Under: Meters and Testers, Mini Projects, Simple Circuits



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