Light based circuits
#LED
#light sensor
#photoresistor
#illumination
#brightness control
#light-dependent resistor
#automatic lighting
#dimmer circuit
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LED Traffic Lights for Games with 555
The LED traffic Light circuit controls 6 LEDs (red, yellow and green) for both north/south directions and east/west directions. The timing sequence is generated using a CMOS 4017 decade counter and a 555 timer. Counter outputs 1 through 4 are...
Mini Led Flashlight with LT1073 IC
This LED lamp circuit can be utilized as a mini LED flashlight. When paired with a 1.2 V rechargeable battery, all components can be housed within a compact enclosure.
The mini LED flashlight circuit typically consists of several key components: an...
sun up alarm schematics
The Up Alarm is designed to provide an audible alert when sunlight is detected or when a light source is activated in a dark environment. It can also be utilized to sense various light sources such as beams or headlights....
LED stepdown power supply
Below is a proof of concept circuit which needs improvement. The part values shown will run a high efficiency red LED with a Vf of 1.9V from only 2 nicads, right down to 2 volts. For a white LED you...
Economical Desk Lamp For Camping
This LED lamp was originally designed for use in a budget solar-charged 12V electrical system. It provides sufficient brightness for comfortable reading at night.
The LED lamp operates on a 12V power supply, making it suitable for integration into solar-powered systems...
1.5V LED Flasher Oscillator
The 8-lead plastic mini-DIP LM3909 integrated circuit was developed by National Semiconductor in the mid-1970s. It is a monolithic oscillator specifically designed to flash Light Emitting Diodes (LEDs). By utilizing the timing capacitor for voltage boosting, it can deliver pulses...
Low Cost Automatic LED Emergency Light
This is a low-cost circuit diagram for an emergency light utilizing a white LED. Components include an LM317 IC, a resistor, a transformer, an LED, and a variable resistor.
The emergency light circuit using a white LED is designed for efficiency...
LED pulse width modulator
Early in the exploration of high-power LEDs, such as the Luxeon 1 and 3-watt devices, the potential of Pulse Width Modulation (PWM) techniques for LED modulation was considered. This method theoretically minimizes distortion by making the LED's "Current versus Luminous...
LED TesterCircuit
Before using LEDs, it is advisable to test them. An LED tester allows for testing even in low light conditions. LEDs are available in various shapes and colors, with some featuring clear, colorless packages and others having colored plastic packages....