A continuity tester is a device used to determine the existence of an electrical connection between two points. It can indicate whether a wire, cable or circuit is electrically closed or not between the...
These circuits can be used for different automatic light sensing projects including automatic night lamp, automatic street light controller, dark sensor circuits, etc. Automatic night lamp circuit using IC 555 and LDR An automatic night...
Direct current flows only in one direction, which means it has a constant polarity across its terminals. Where an Alternating current periodically changes its direction of the current, that is an alternating polarity at...
UM66 melody generator is a simple and easy DIY project which is suitable for beginners and hobbyists. The circuit can be used as a doorbell, musical alarm, musical bell, etc. IC UM66 The UM66...
LM317 battery charger with overcurrent protection circuit The circuit is a 6V LM317 voltage and current control battery charger circuit which generates a regulated 6V DC output. The transformer T1 steps down the input...
This infrared burglar alarm can use at doors, entries, etc. To alerts us, when somebody crosses through the IR beam. As the IR beams are invisible to human eyes, the circuit can work as a hidden security device. To...
IC 555 Simple LED Flasher An LED flasher circuit can be used as an LED blinker, vehicle indicator light, signal flashlight, etc. A simple blinking circuit is basically a circuit to continuously ON and...
Here the circuit for a power failure indicator, which can be used along with any other device to detect a power outage. The circuit uses an external 12V DC for checking the presence of a...
A Voltage controlled oscillator (VCO) circuit varies its frequency of the oscillation with respect to the externally applied voltage. The VCO circuit can obtain a linear variation of oscillation in relation to the input voltage. The...
The here circuit is for a single channel Infrared remote controller which can be used to control home appliances and devices. The IR remote controller consists of a receiver circuit similar to a latching...
