This Simple Motor Powered Emergency Flashlight Circuit provides an easy way to create emergency lighting; it uses a motor as a generator to produce electrical power. Also, power goes to LED for light and charges the supercapacitor and then it turns motor to charge. Circuit Working: Parts List: Components Values Quantity Resistors 220Ω 1/4 watt […]
Mini Projects
Simple Darkness Detector Circuit
LED turn ON by LDR when dark and LDR and resistor connect in voltage divider circuit. During bright light transistor base get low voltage so transistor stay OFF and during dark come LDR resistance goes down and base voltage goes up with transistor turn ON and LED light up. Hence, this Simple Darkness Detector Circuit […]
Simple Non-Contact 220V AC Detector Circuit using IC 555
Playing with electric wire is risky especially if we do not know electronics, also wrong use of electricity can be dangerous. So better to be safe before touching wire and first check if some electricity with leakage voltage is still there. This article for Simple Non-Contact 220V AC Detector Circuit using IC 555 show how […]
Simple Voltage Follower Circuit using Op-amp IC 741
A Simple Voltage Follower Circuit using Op-amp IC 741 provides an output that matches the input; therefore, engineers also call it a buffer amplifier or a unity-gain amplifier. IC 741 op-amp is cheap and useful that is why so many people use it. Voltage follower has high input impedance and with low output impedance and […]
Simple Wireless Mobile Phone Charging Circuit
To begin with, this article talk about two main parts for wireless phone charging: So, making Simple Wireless Mobile Phone Charging Circuit is easy and for that we only need resistors, capacitors, diodes, voltage regulator, copper coils and transformer to make circuit work good. Transmitter Circuit Working: Parts List: Components Values Quantity Resistor 1k 1/4 […]
Simple Flasher Circuit using LED and LDR
This simple flasher circuit uses an LED and an LDR to create the flashing effect; as the light level changes, the LDR changes its resistance, which controls the LEDs blinking. Hence, there is no need for big chips or transistors but still the LED blink happens, also it uses simple parts like resistor, capacitor and […]