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Security and Protection

Automatic Dimmer Dipper Circuit for Automobiles

Last updated on 5 May 2026 by Admin-Lavi Leave a Comment

Automatic dimmer dipper circuit for automobiles is a simple and small device used in vehicles and it changes the headlight brightness automatically when another vehicle comes from the front. Furthermore, because too much light can make other driver blind at night and also this can make an accident. So main purpose of this circuit is […]

Filed Under: Automobile Circuits, DIY Projects, Security and Protection, Sensors and Detectors

Simple Current Limiter Circuit using Transistors

Last updated on 28 April 2026 by Admin-Lavi Leave a Comment

To begin with, this Simple Current Limiter Circuit using Transistors gives tutorial to show how to make a circuit that stop giving too much power to other electronics. Also, it helps to protect from overload by using two transistors and one special resistor. What is a Current Limiter Circuit using Transistors: A transistor current limiter […]

Filed Under: DIY Projects, Mini Projects, Power Supply Circuits, Security and Protection, Transistor Circuits

Simple Non Contact AC Mains Voltage Detector Circuit

Last updated on 28 April 2026 by Admin-Lavi Leave a Comment

This Simple Non Contact AC Mains Voltage Detector Circuit is to find AC voltage without touching wire, and it uses antenna to catch AC signal from air. After that, the signal goes through transistors and LED blink when AC voltage is near, also this circuit is good for safety and easy to make at home. […]

Filed Under: Mini Projects, Security and Protection, Sensors and Detectors

High Voltage Fence Charger Circuit

Last updated on 2 July 2026 by Admin-Lavi 2 Comments

This post shows how to make High Voltage Fence Charger Circuit, which does not cost much and is safe to stop wild animals and keep our pets inside fence. Also, the circuit is cheap and easy to fix and is better than normal fence. WARNING: Electric fence can kill if wrongly made, only do with […]

Filed Under: 555 Timer Projects, High Voltage, Power Supply Circuits, Security and Protection

Stun Gun, Taser Gun Circuit

Last updated on 21 April 2026 by Admin-Lavi Leave a Comment

In this Stun Gun, Taser Gun Circuit, people use Tasers (or stuns) to deliver a powerful shock that stops an assailant. Here, the shock is to scare and hurt but not to kill. Bad person may not be in position to control his body for few seconds after shock and at that time we can […]

Filed Under: DIY Projects, LED and Lamps, Power Supply Circuits, Security and Protection

Fire Alarm Circuit using Transistors

Last updated on 22 June 2026 by Admin-Lavi Leave a Comment

Fire Alarm Circuit is very important for every home, as these small thing can save life because it tell early when fire is happening. In this article, for Fire Alarm Circuit using Transistors we will learn how to make easy fire alarm circuit by ourselves. The circuit is good for small place like home, shop […]

Filed Under: Alarm Circuits, Security and Protection, Transistor Circuits

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