Today security is big problem everywhere; many time thief try to open bag or suitcase in bus, train or station, therefore, we cannot always keep our eye on our luggage. So this small Luggage Safety Alarm Circuit using IC LM358 is a solution which help to protect our bag, as it uses piezo sensor and […]
Mini Projects
Simple LED Heart Blinker Circuit with IC 555 Timer
This Simple LED Heart Blinker Circuit with an IC 555 Timer is a very easy project, it uses one timer IC, one transistor and several LEDs arranged in a heart shape, giving it an attractive and appealing appearance. When we give 9V battery power then LEDs start blinking in heart pattern; furthermore, this project is […]
555 IC Based Schmitt Trigger Circuit
555 IC Based Schmitt Trigger Circuit is a small project, it work like comparator and comparator is ON/OFF when input cross the voltage; noise make output jump and Schmitt Trigger stop this. It have 2 limit: high and low. input goes high then output is ON and input goes low then output is OFF. Moreover, […]
Simple Wire Loop Security Alarm Circuit
A simple wire loop alarm is a small security circuit that uses a thin wire as a sensor loop and if someone cuts or opens the loop, the buzzer sounds. Also, it works on 9V battery, needs few parts, is cheap and easy to make. Circuit Working: Parts List: Components Values Qty Resistors 4.7M 1/4 […]
Slow Voltage Rise Power Supply Circuit
Sometimes when our circuit power is ON a big current comes suddenly and this sudden current can damage parts like IC, capacitor and transistor; so to stop this we make Slow Voltage Rise Power Supply Circuit. This circuit gives voltage slowly but not full at once, so circuit become safe and work is quite reliable. […]
Low Power Led Flasher Circuit using Nand Gate IC
Make your led blink easy with this easy to make Low Power Led Flasher Circuit using Nand Gate IC, as it uses IC CD 4093, a quad Nand gate with Schmitt trigger input. Also, the circuit makes led blink with very less power and it can run from small 6V battery too. Circuit Working: Parts […]