driver led circuit diagram
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#driver circuit
#current limiting
#resistor
#diode
#voltage drop
#brightness control
#power efficiency
#circuit diagram
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LED Audio VU Meter Circuit
The LED meter circuit is more compact and simpler than its analog equivalent, making it a common choice in audio equipment. This circuit utilizes the LM3915 integrated circuit (IC) and operates in a logarithmic mode. It comprises a single IC...
R/C Airplane LED Flasher
This was designed to flash a pair of LEDs to be mounted on the wing tips of a Parkzone Citabria R/C (remote control) airplane. The unmodified Parkzone Citabria only weighs 20 grams (about 0.7 oz), so weight, and therefore the...
Nite Rider LED Lights
IC4, C1, R1 and R2 are used for the clock pulse which is fed to both the counters IC2 and IC3 Pin 14. IC1 is a Flip Flop and is used as a switch to enable either IC2 or IC3...
13 Color LED Rainbow
This circuit uses a set of 13 differently colored LEDs to generate a full color spectrum. The photo does not fully represent the colors generated due to camera limitations. The real-world display is very eye-catching. If you want to "trick...
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 inexpensive alkaline battery cells totaling 3V for power. Since most...
Smooth FlasherCircuit
Standard LED flashers activate the LED in a rapid on-off sequence, which can become bothersome over time. The circuit presented here offers a more gradual illumination effect.
This circuit utilizes a simple design to create a soft flashing LED effect, which...
LED linear modulator
After constructing a Pulse Width Modulator for high-power LEDs, another LED modulator was developed for an optical transceiver. This project utilized a different approach, focusing solely on linear techniques for audio modulation. Similar to the PWM circuit, this circuit employs...
LED light chaser using 4017
This is a LED sequencer circuit where 10 LEDs light up and turn off sequentially, creating a chasing effect. This simple circuit is suitable for designing lighting decorations on Christmas trees. It can also be used for lighting animations by...
Simple Twi-light using white LEDs
This sunlight-controlled lamp utilizes a light-dependent resistor (LDR) as the sunlight sensor and comprises a total of 25 high-brightness white LEDs. Each row of LEDs is connected in series with separate resistors. The operation of the circuit is straightforward. During...