Archive for category: Lighting Circuits Diagram

220V LED Blinker Circuit

Lighting Circuits Diagram | By: Diagram mania

Here is a simple LED blinker or flasher for decoration purpose. The 20 High bright LEDs flashes alternately giving a brilliant colour display. The circuit is low cost and derives DC directly from AC without using a step down transformer. The design is too simple so that the circuit can be assembled on a small […]

220V Automatic Light Switch Circuit

Lighting Circuits Diagram | By: Diagram mania

This light sensitive automatic light switch circuit is intended to be connected at the main 220V supply. The circuit will connect a 220V lamp at the nightfall and disconnects it in the morning light. The switching is made without a relay in order to avoid problems with the electric arc and noise caused by inductance […]

Strobe Lights Project

Lighting Circuits Diagram | By: Diagram mania

Stroboscopic effects of lights for nightclubs are realized by bringing into play old white Light Emitting Diodes (LEDs) swapping the ejection lanterns/lamps for superior effectiveness at minimal cost. This control is achievable by instantaneously changing the Light Emitting Diodes on & off at elevated volts for small amount of time span. This speedy control of […]

Strobe Light Project Circuit

Lighting Circuits Diagram | By: Diagram mania

Attention! This strobe light circuit is connected to 220V, so measurements and experiments are very dangerous even after unplugging it from the mains. P1 potentiometer must have plastic swivel. The main part of this strobe circuit is the gas discharge lamp in U shape that is filled with xenon. To fire up the flash tube […]

Sound Activated Lights Project

Lighting Circuits Diagram | By: Diagram mania

This diy sound activated lights circuit turns a lamp ON for a short duration when the dog barks (or a relatively strong sound) giving an impression that the occupants have been alerted. The condenser microphone fitted in a place to monitor sound and generates AC signals, which pass through DC blocking capacitor C1 to the […]

Simple and Useful LED Circuits

Lighting Circuits Diagram | By: Diagram mania

Due to the advantages like low voltages, long life, cheap, reliable, fast on-off switching etc, the LED’s are used in many applications. The various applications of LED are, All kinds of visual displays i.e. seven segment displays and alpha numeric displays. Such displays are commonly used in the watches and calculators. In the optical devices […]

Police Car Lights with LEDs

Lighting Circuits Diagram | By: Diagram mania

This circuit is used to simulate the police car lights by alternating flashing strobes seen on British police cars. The IC1a forms a square wave oscillator having adjustable frequency with VR1 to give the best effect. This square wave is buffered by IC1b and in turn drives the decade counter IC2. Outputs from the counter […]

Ornamental LED Circuit

Lighting Circuits Diagram | By: Diagram mania

Here is a simple LED flasher for decoration purpose. The High bright LEDs flashes alternately giving a brilliant colour display. The circuit is a simple Astable multivibrator using two NPN transistors T1 and T2.The circuit works on the principle of charging and discharging of capacitors C1 and C2. Current from the positive of battery flows […]

Handy Pen Torch Circuit

Lighting Circuits Diagram | By: Diagram mania

This easy to construct “Handy pen torch” electronic circuit and low component count, uses two power white LEDs for lighting. Low volt (4.8V dc) supply available from the built in rechargeable Ni-Cd battery pack is first converted into two channel (independent) constant current sources by two pieces of the renowned precision adjustable shunt regulator chip […]

Flashing Beacon Circuit

Lighting Circuits Diagram | By: Diagram mania

A flashing beacon has many uses. It can be employed as a distress signal on highways or as a direction pointer for parking lots, hospitals, hotels, etc. Here we present a flashing beacon that uses well-known regulator IC LM317T. As LM317T regulator can deliver more than 1 amp. A small 12V, 10W bulb with a […]