Category: Circuits

Automatic night lamp circuit using LDR and IC 555

This circuit can be used for different automatic light sensing projects, including automatic night lamp, automatic street light controller circuits, etc. An automatic night light circuit controls the switching of light by sensing the...

Alternate light flasher circuit – Dual LED

This alternate LED flasher consists of a pair of LEDs which blink alternately. It has the same circuit of a simple LED flasher circuit using a 555 astable multivibrator. The only difference is that...

Continuity tester circuit using 555

A continuity tester is a device used to determine the existence of an electrical connection between two points. It consists of two testing probes which will be connected to end contacts in the circuit....

Ripple factor and Efficiency of rectifier

Ripple factor The ratio of the RMS value (root mean square) of the AC component to the DC component of the output is defined as the Ripple factor and is denoted by γ. Ripple factor, γ...

Form factor and peak factor of rectifier

Peak factor The peak factor is defined as the ratio of the maximum value to the RMS value of an alternating quantity. Peak factor = Peak value / RMS value RMS voltage of a...

RMS value of Rectifier

RMS (Root mean square) value is the square root of the mean value of the squared values. The RMS value of an alternating current is the equivalent DC value of an alternating or varying electrical...

Average value of full wave and half wave rectifier

Because Average value The arithmetic average of all the instantaneous values of a signal is called as its average value.  Average value = area under curve / base Average value of a sine wave...

LED strobe light circuit – Police lights

Strobe lights are commonly used as emergency vehicle lights for visual warnings. Their light effects are similar to the flashing light in police vehicles, ambulance, beacon light bars, etc. The given strobe light circuit...

Flashing brake lights for motorcycles

Simple flashing brake light The circuit can use to make a simple pulsating stop brake light, which continuously flashes as long as the brake has applied. Here we are using a 555 astable multivibrator...

Melody Generator circuit using UM66 DIY

The given melody generator circuit is built with musical IC UM66. A melody generator using um66 is very inexpensive and simple to assemble. The circuit can be used as a door bell, musical alarm,...