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220 V LED Night light – Circuit Schematic
220 V LED Night light
This Is a capacitor power supply. This is a very small currents of energy-effective, because it has very little loss, much smaller than the miniature transforme...
Luxeon Star LED driver with MAX1709 IC – Circuit Schematic
Luxeon Star LED driver with MAX1709 IC
Anyone who has ever dealt with construction of low-voltage-fed inverter realized that this is no easy task. The shrinking supply voltage decreases rapidly trans...
Powerful LED Flashlight circuit – Circuit Schematic
Powerful LED Flashlight circuit
Presented circuit is very simple. With more sampling, I refrained from using the converter and lamp designed for powering three NiCd or NiMH batteries. Because ...
White LED Supply Driver II – Circuit Schematic
White LED Supply Driver II
The article describes a simple and very cheap to drive white, blue or UV LEDs, used for example in small lamps and testers. The cost of components shall not exc...
LED Flashlight circuit with MAX1811 – Circuit Schematic
LED Flashlight circuit with MAX1811
White LEDs have a rated current at a voltage drop of about 3.3 to 3.4 V. It is ideal to be powered from the battery voltage which is slightly larger. Then there...
AC MAINS LED indicator schematic – Circuit Schematic
AC MAINS LED indicator schematic
Often the need to control light switch on the instrument. If napájíme LED source of low DC voltage sufficient to classify a series of LED-resistor of appropri...
LED flashing circuit for toys – Circuit Schematic
LED flashing circuit for toys
It consists of a 4047 low-power monostable/astable multivibrator, IC1, used in the astable mode to provide the timing pulses to control the flash rate of the L...
Power LED mood Lamp – Circuit Schematic
Power LED mood Lamp
A good way to mount the circuit board is to use a hot glue gun to "mold" the circuit underneath the lamp housing. There is plenty of space there for your board....
Fish Tank Lights and Temperature Detector – Circuit Schematic
Fish Tank Lights and Temperature Detector
When the tank is cleaned the fish are removed and placed in a small amount of the tank water. The problem is that fish don’t like rapid temperature fluctuatio...
Flash triggering circuit – Circuit Schematic
Flash triggering circuit
My first project after assembling an electronic design lab was to build a flash trigger that I could use for high-speed photography. I thought it would be usefu...
12 Volt Fluorescent Lamp circuits – Circuit Schematic
12 Volt Fluorescent Lamp circuits
Here is the schematic diagram for a 20 Watt driver. I developed this circuit in 1985, and used it to build a lamp that found much use both as camping light and ...
Strobo triggering schematics – Circuit Schematic
Strobo triggering schematics
This page contains some information on circuits which can be used for triggering stroboscopes from external circuits. The circuit here are designed to be integr...
12V stroboscope – Circuit Schematic
12V stroboscope
This is one of my stroboscope designs. Usually many stoboscope circuit work directly from mains voltage, but this circuit uses 12V DC intead od mains AC. This i...
Advanced Light Dimmer – Circuit Schematic
Advanced Light Dimmer
This circuit is a real core of the dimmer system. This circuit generates ramp 100 Hz signal which is syncronized to the incoming mains voltage. The ramp signal ...
80x32 LED matrix display – Circuit Schematic
80x32 LED matrix display
I recently purchased 10 SLM1608 (SLM1606) LED matrix display units from Ebay (you might also contact the seller directly at [email protected]). These are 16x16 LED ma...
200 LEDs Christmas Lights circuit – Circuit Schematic
200 LEDs Christmas Lights circuit
This simple and inexpensive circuit built around a popular CMOS hex inverter IC CD4069UB offers four sequential switching outputs that may be used to control 2...
Audio Light Modulator circuit – Circuit Schematic
Audio Light Modulator circuit
Audio light modulations add to the enjoyment of music during functions organised at home or outdoors. Presented here is one such simple circuit in which light i...
LED Christmas Star – Circuit Schematic
LED Christmas Star
This circuit can be used to construct an attractive Christmas Star. When we switch on this circuit, the brightness of lamp L1 gradually increases. When it reach...
LED Running message Board CD4017 – Circuit Schematic
LED Running message Board CD4017
Light emitting diodes are advan- tageous due to their smaller size, low current consumption and catchy colours they emit. Here is a running message display circ...
Auto ON-OFF lights – Circuit Schematic
Auto ON-OFF lights
An ordinary automatic room power control circuit has only one light sensor. So when a person enters the room it gets one pulse and the lights come on. When the ...