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CAR STOP LIGHT
Capacitor Cl is connected continuously through the supply of 3 volts to 10 megohm resistor Rl. The capacitor is charged (relatively slowly) to 3 volts. The wink...
Simple light-switch circuit
The circuit is a light switch who triggers when light drops on photo resistor. It is fairly simple in construction and can be used in a million applications. T...
advanced bicycle lighting Schematic
That Circuit is an advanced bicycle lighting system which will power your lights and also charge four NiCd batteries while you running in the streets, for keepi...
Stereo Led Vu Meter – Circuit Schematic
Stereo Led Vu Meter
This circuit provides a cheap alternative to the LM3915 series LED displays. The meter relies on a square-wave oscillat...
LED Chaser – Circuit Schematic
LED Chaser
General There are many 9V chaser circuits that seem to waste about 7V when driving LEDs that are only about 2V. This project is unique, because it uses only two...
Constant LED power circuit – Circuit Schematic
Constant LED power circuit
An LED is usually a series resistor needed to ensure that the LED does not get too much power. The disadvantage of such resistance is that the current through t...
LED tester circuit – Circuit Schematic
LED tester circuit
This ledtester uses as a power switched opamp. The control range is about 0-30mA. Thus, all test and standard LEDs, the voltage across the LED to read. The powe...
9V LED light organ – Circuit Schematic
9V LED light organ
This is a nice example circuit that can be used at parties. The four LEDs blink to the beat of the music. The light organ using a microphone responds to sound. ...
12V smooth Flashing circuit – Circuit Schematic
12V smooth Flashing circuit
This circuit ensures that a blinking slowly, ie the lamp is brighter lights until a maximum is reached and then gradually decrease in strength until the lamp is...
LED Flasher IIV – Circuit Schematic
LED Flasher IIV
This is a simple design of a single flashlight. This small circuit is within a half hour to build. The circuit operates from 4.5 to 12 V. Of course it is possib...
Triac mains light dimmer – Circuit Schematic
Triac mains light dimmer
This is the schematic of the conventional light dimmer. L1 and C2, C3 form the lichtnetontstoring. In this circuit meets almost every TRIAC as a TIC226D. For C1...
Electric candle simulation schematic – Circuit Schematic
Electric candle simulation schematic
For a candle to burn, we need a heat source (the flame of a match) and to extinguish it, you do it just to blow out. The following circuit behaves similarly. If...
Flashing Mains Lamps circuit – Circuit Schematic
Flashing Mains Lamps circuit
This is a design for a flashlight that two 220 V alternating lights can control. The flashlight uses only one IC. IC1a IC1c to be used for the flashing signal ...
Fet Led schematic – Circuit Schematic
Fet Led schematic
This circuit uses the effect of a FET as the power to act through the gate with the source to connect. The voltage may vary between 4V and 30V, the current thro...
4 channels Lamp organ – Circuit Schematic
4 channels Lamp organ
This light organ is on the speaker output of the amplifier. The lamps lit on the rhythm of the music. The input signal is amplified by a transformer. Then it g...
20 minute lamp fader – Circuit Schematic
20 minute lamp fader
In this circuit, a 120VAC lamp is slowly illuminated over a approximate 20 minute period. The bridge rectifier supplies 120 DC to the MOSFET and 60 watt lamp. A...
Lamp Fader schematic – Circuit Schematic
Lamp Fader schematic
The sunset lamp comes on at full brightness and then slowly fades out over 1.5 hours time and stays off until power is recycled....
Light Sequencer schematic – Circuit Schematic
Light Sequencer schematic
The drawing below illustrates a multistage light sequencer using descrete parts and no integrated circuits. The idea is not new and I hear a similar circuit was...
5 Volt to 12 Volt bi-directional lamp sequencer – Circuit Schematic
5 Volt to 12 Volt bi-directional lamp sequencer
The circuit below is designed to be used with the bi-directional lamp sequencer shown above on this same page. Two additional transistors are used to increase t...
LED flasher with two transistors – Circuit Schematic
LED flasher with two transistors
This circuit will flash a bright LED 5000mcd as an intention getting device or fake car alarm....