This tutorial show how to make a Infrared (IR) Sensor Alarm Circuit using TSOP1738, which finds intruder using light which we cannot see. Also, this alarm circuit uses infrared light so people call it IR alarm, which make one invisible light beam with small chip named IC 555. Moreover, if someone walk in front of […]
Security and Protection
Infrared (IR) Intruder Alarm Circuit
This article tell how to make new type of Infrared (IR) Intruder Alarm Circuit, where it can find person who walk through invisible light beam. Circuit have two main part: one transmitter and other one is receiver. Transmitter send out one infrared light beam across a room and if someone goes in front of light […]
Automatic Dimmer Dipper Circuit for Automobiles
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 […]
Simple Current Limiter Circuit using Transistors
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 […]
Simple Non Contact AC Mains Voltage Detector Circuit
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. […]
High Voltage Fence Charger Circuit
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 […]