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Strobe Flash Light Circuits – Circuit Schematic
Strobe Flash Light Circuits
This circuit uses12V DC instead od mains AC. This is very good idea if you don`t want to mess with direct mains voltage connected circuit or you want to run the...
Light Dimmers Circuits – Circuit Schematic
Light Dimmers Circuits
Usually when the car door is closed, the dome light just goes OFF. With this circuit, you can have our dome light fade slowly in brightness and finally go OFF. ...
LED Series Resistor Calculator – Circuit Schematic
LED Series Resistor Calculator
All LEDs require some form of current limiting. Connecting an LED directly to the power supply will burn it out in a heartbeat. Overdriving, even briefly, will ...
72 LED Clock circuit – Circuit Schematic
72 LED Clock circuit
In the circuit, 60 individual LEDs are used to indicate the minutes of a clock and 12 LEDs indicate hours. The power supply and time base circuitry is the same ...
The Itsy-Bitsy USB Lamp circuit – Circuit Schematic
The Itsy-Bitsy USB Lamp circuit
We`ve called it the Itsy Bitsy USB Lamp. It is such a delightfully simple idea we`re wondering why no-one ever thought of it before. It started life (and contin...
Portable Lamp Flasher circuit – Circuit Schematic
Portable Lamp Flasher circuit
Here is a portable, high-power incandescent electric lamp flasher. It is basically a dual flasher (alternating blinker) that can handle two separate 230V AC loa...
Led or Lamp Flasher Circuit – Circuit Schematic
Led or Lamp Flasher Circuit
This circuit was designed to provide that continuous light lamps already wired into a circuit, become flashing. Simply insert the circuit between existing lamp ...
High-intensity LED Warning Flasher circuit – Circuit Schematic
High-intensity LED Warning Flasher circuit
This circuit was designed as a warning flasher to alert road users to dangerous situations in the dark. Alternatively, it can act as a bicycle light (subject to...
Fading Leds Circuit – Circuit Schematic
Fading Leds Circuit
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...
Dancing LEDs Circuit – Circuit Schematic
Dancing LEDs Circuit
The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked-up by a small microphone. The expanded version can driv...
AC 220 Volts Flashing Lamps Circuit – Circuit Schematic
AC 220 Volts Flashing Lamps Circuit
This circuit is intended as a reliable replacement to thermally-activated switches used for Christmas tree lamp-flashing. The device formed by Q1, Q2 and relate...
Two Flashing LEDs Circuit – Circuit Schematic
Two Flashing LEDs Circuit
Here is the circuit diagram of Two Flashing LED`s for different applications (such as model construction), and recreational. Having adjustable flashing speed wi...
Bicycle Back Safety Light Circuit – Circuit Schematic
Bicycle Back Safety Light Circuit
This circuit has been designed to provide a clearly visible light, formed by 13 high efficiency flashing LEDs arranged in a pseudo-rotating order. Due to low vo...
12 Stage Neon Sequencer (NE-2 / NE-51) circuit – Circuit Schematic
12 Stage Neon Sequencer (NE-2 / NE-51) circuit
This circuit is similar to the LED clock using 12 neon indicator lamps instead of LEDs. It operates from 2 high capacity ni-cad cells (2.5 volts) which keep it ...
120VAC Lamp Chaser circuit – Circuit Schematic
120VAC Lamp Chaser circuit
This circuit is basically the same as the channel LED sequencer with the addition of solid state relays to control the AC lamps. The relay shown in the diagram ...
1.5 Volt LED Flashers circuit – Circuit Schematic
1.5 Volt LED Flashers circuit
The LED flasher circuits below operate on a single 1.5 volt battery. The circuit on the upper right uses the popular LM3909 LED flasher IC and requires only a t...
Two Transistor LED Flasher circuit – Circuit Schematic
Two Transistor LED Flasher circuit
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10 Channel LED Sequencer circuit – Circuit Schematic
10 Channel LED Sequencer circuit
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16 Stage Bi-Directional LED Sequencer circuit – Circuit Schematic
16 Stage Bi-Directional LED Sequencer circuit
The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two "1 of 8 line decoders" (74HC138 or 74HCT138) to generate the popular "Night Ri...
Triple Stroboscope circuit – Circuit Schematic
Triple Stroboscope circuit
This circuit enables observation of movement between other stroboscopes. Generation of rectangular signal is based on NE555. This circuit requires a low power s...