LED Photo Sensor
Here's a circuit that takes advantage of the photo-voltaic voltage of an ordinary LED. The LED voltage is buffered by a junction FET transistor and then applied to the inverting input of an op-amp with a gain of about 20. This produces a change of about 5 volts at the output from darkness to bright light.
Fantastic Atom Expander
The LEDs can be any colour but blue. For a very interesting effect, make one ring red, the next one green, the next one orange, then yellow, etc.
Anyone who has been to a night club, concert or school dance has probobly seen a colour organ. Colour organs cause lights to blink and flash to music from your TV, stereo, guitar and even your own voice.
40W Fluorescent Lamp Inverter
This 40W fluorescent lamp inverter allows you to run 40W fluorescent tubes from any 12V source capable of delivering 3A.
230V Blinking LED
I needed a pulsating light for a certain signaling. Voltage was 230V. So I decided to make a simple circuit, consisted of a LED diode, two capacitors, two resistors, a diac and a diode.
28 LED Clock Timer
This is a programmable clock timer circuit that uses individual LEDs to indicate hours and minutes.
Nite Rider Lights
As a keen cyclist I am always looking for ways to be seen at night. I wanted something that was a novelty and would catch the motorists eye.
Low cost-Automatic Emergency Light
1. It is highly bright due to the use of white LEDs.
2. The light turns on automatically when mains supply fails, and turns off when mains power resumes.
3. It has its own battery charger. When the battery is fully charged, charging stops automatically.
5 Lamp-LED Flash Driver
It is a low cost, low-power C-MOS LSI designed for lamp andLED flash driver.
200W Lamp Flasher
200W Lamp Flasher kit is used to flash lamps, bulbs and halogen lamp to give your product that attracting look.
This circuit enables observation of movement between other stroboscopes. Generation of rectangular signal is based on NE555. This circuit requires a low power supply that is made from a simple transformer TR1, traditional rectifier bridge and zener diode.
This set of two circuits from the basis for a very simple light wave transmitter. A LASER beam is modulated and then aimed at a receiver that demodulates the signal and then presents the information (voice, data, etc..).
TRIAC Light Dimmer
This little circuit can be used to dim lights up to about 350 watts. It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat. Please note that this circuit cannot be used with fluorescent lights.
I don't know why, but people like blinking lights. You see LED chasers everywhere, in TV shows (Knight Rider), movies, and store windows. This schematic is my version of a simple 10 LED chaser.
LEDs or Lamps Sequencer
Very simple, versatile modular design.
No limits to the number of modules used in the ring
Brightness Control for small Lamps
This device was designed on request, to control the light intensity of four filament lamps
This circuit operates two LED strips in pulsing mode, i.e. one LED strip goes from off state, lights up gradually, then dims gradually, etc. while the other LED strip do the contrary.
Each strip can be made up from 2 to 5 LEDs at 9V supply.
LED or Lamp Pulser
This circuit operates a LED in pulsing mode, i.e. the LED goes from off state, lights up gradually, then dims gradually, etc.
Battery-powered Night Lamp
This circuit is usable as a Night Lamp when a wall mains socket is not available to plug-in an ever running small neon lamp device.
This circuit is intended to let the user turn off a lamp by means of a switch placed far from bed, allowing him enough time to lie down before the lamp really switches off.
Two-wire Lamp Flasher
This circuit has been designed to provide that continuous light lamps already wired into a circuit, become flashing. Simply insert the circuit between existing lamp and negative supply.
220 Volts Flashing Lamps
Make 220v device that flashes lamps in adjustable flashing rate. Be careful! This voltage can kill!
LED or Lamp Flasher
Build LED or lamp flasher for decoration or as indicator in other devices.
Adjustable Strobe Light
Make yourself strobe light for parties. Flashing speed for this device can be adjusted easily.
This circuit is a simple ultraviolate light that can be powered by a 6 volt battery or power supply that is capable of supplying 1 or more amps.
Instrument panel lamp dimmer control
This circuit uses an MC3392 low side protected switch and an MC1455 timing circuit to form an automotive instrumentation panel lamp dimmer control. The brightness of incandescent lamps can be varied by Pulse Width Modulating the input of the MC3392.
Make a neon bulb run on a 12V DC. It has a low power consumption and it's very easy to build.
Bicycle back Safety Light
This circuit has been designed to provide a clearly visible light, formed by 13 high efficiency flashing LEDs arranged in a pseudo-rotating order.
6 Channel Disco Running Lights
Yet another circuit designed for home parties. It controls 6 (but up to 10) 220/110V bulbs and makes the light "running" between them. Use color bulbs for real show!
12VDC Fluorescent Lamp Driver
12VDC Fluorescent Lamp Driver. Very useful to have in car, or when camping.
Adjustable Strobe Light
Adjustable Strobe Light. Ideal for home parties.