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Motorcycle Button Start Locking Circuit

In this post we discuss how to modify an existing button start system in motorcycles so that it’s disabled as soon as the engine has started and gained the required minimum amount of RPM. The idea was requested by Mr. Jordan Circuit Requirements I just discovered your splendid site/blog with focus on education about electronics. … Read moreMotorcycle Button Start Locking Circuit

4 Simple Clap Switch Circuits using Transistors, Opamp, and IC 555

Want to build a simple clap switch circuit that will toggle any load in response to your claps? The article is presented exactly for this purpose. Here we discuss 4 unique and simple designs which can be selected as per user preference. Overview The article talks about what the title suggests – a clap switch. … Read more4 Simple Clap Switch Circuits using Transistors, Opamp, and IC 555

Passive Infrared (PIR) Motion Sensor Circuit

PIR with delay ON alarm

The post discuses the pinout details of the standard passive infrared (PIR) sensor RE200B and also explains how to make a motion detector circuit using a single transistor and relay, which can detect the IR radiation from human body and activate the attached relay. What is a PIR PIR is the acronym for Passive Infra … Read morePassive Infrared (PIR) Motion Sensor Circuit

5 KVA to 10 KVA Automatic Voltage Stabilizer – 220 Volts, 120 Volts

In this article we discuss an easy to build a 7 stage high wattage in the order of 5000 to 1000 watts stabilizer circuit which can be used  for controlling our mains AC line fluctuations and for producing very accurate stabilized voltage outputs for our domestic electrical appliances. Circuit Operation The proposed Accurate 7 relay OpAmp Controlled Mains … Read more5 KVA to 10 KVA Automatic Voltage Stabilizer – 220 Volts, 120 Volts

TV Remote Control Tester Circuit

Remote control tester circuit using an opamp

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 circuit … Read moreTV Remote Control Tester Circuit

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