In this post I have explained about a circuit which can be used to monitor and detect the presence of municipal water supply by operating a pump motor through an intermittent ON/OFF timer. The timer keeps the pump motor ON for 15 seconds, if water is not detected, the pump is switched OFF for the […]
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Simple Motorcycle Security Alarm Circuit
In this article I have explained a simple motorcycle ant-theft security alarm circuit using a tilt switch and a TTP223 touch switch. The circuit was requested by Mr. Sergei, as given below. Design Request and Specifications I am a motorcyclist and I would like to ask you to design a simple and cheap alarm system […]
Flashlight Activated Burglar Alarm Circuit
This flashlight triggered burglar alarm circuit will instantly switch ON an alarm as soon as it detects light from the burglar’s torch or flashlight. Burglars and thieves normally set out to steal or rob during nights, when it is completely dark, and depend on a flashlight to investigate the area. Our circuit is setup and […]
LED Light Wave Effect Generator Circuit
In this post I have explained a simple LED light wave effect generator circuit which will sequentially create a difference in brightness over a chain of LEDs, creating a chasing light wave kind of visual effect.
Design your own Sine Wave Inverter Circuit from the Scratch [Tutorial]
In this article I have explained comprehensively regarding how to design a sine wave inverter without any form of coding or complex circuit designs. The included designs are simple yet extremely precise with their sine waveform structure. You might have often felt discouraged, thinking that making a sine wave inverter from the scratch can be […]
Ding Dong Bell Circuit that Saves Electricity
This circuit goes beyond being a simple two-tone doorbell. Instead, it utilizes envelope modulation to produce an authentic ‘ding-dong’ chime sound. Additionally, it incorporates a power-saving feature, consuming zero power in standby mode. Circuit Diagram How the Circuit Works When SW1 is pressed, it triggers Q1 to power the remaining circuitry. IC1a serves as a […]