Linear Current Source LED Driver with Dimmer Input

Linear Current Source LED Driver with Dimmer Input

The compact module shown here is a linear current source for LED driver and it's ideal for automotive LED lighting applications. The project is built using a TLD1211 chip from Infineon. The board provides supply to LEDs under the severe condition of automotive applications resulting...

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21-Watt Universal AC LED Driver with Accurate Average-Mode Constant Current Control

21-Watt Universal AC LED Driver with Accurate Average-Mode Constant Current Control

The project presented here is an average current mode control LED driver operating in a constant off-time mode. The project consists of a bridge rectifier followed by a buck converter operating with a fixed off-time of 20µs. The circuit provides accuracy, and line and load regulation...

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1.275
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Interactive LED Coffee Table – Arduino Compatible

Interactive LED Coffee Table – Arduino Compatible

The project demonstrated here is an IR proximity sensor-based LED light, mainly designed for interactive coffee tables, but also can be used as single interactive light. The table can be made with multiple of these PCBs. Multiple tiles can be used as shown in the image below, each...

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Closed Loop Constant LED Light Source Using OPT101 Light Sensor and OPA569 Power OPAMP

Closed Loop Constant LED Light Source Using OPT101 Light Sensor and OPA569 Power OPAMP

The project presented here is a precision closed-loop LED driver that provides very accurate constant light and can be used for photography, scientific research, and other applications that require an accurate light source. The project consists of light sensor OPT101 and OPA569 power...

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1.230
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LED Dimmer for Super High Brightness LEDs

LED Dimmer for Super High Brightness LEDs

This is a high-efficiency and reliability DC/DC converter with a dimming feature for super high brightness LEDs.  The project is built using L6902D chip. L6902 is a complete and simple step-down switching regulator with adjustable current limit. The current control loop with external...

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Low-Cost LED Dimmer using LM3578

Low-Cost LED Dimmer using LM3578

This Low-cost LED dimer project includes two main parts, an LM3578 chip, and a MOSFET. The LM3578 generates a PWM signal, and Q1 MOSFET helps to drive a high current LED. The project also includes current limit feature. Over current trigger point is set to 1.1A. LED intensity can be...

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1.255
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3 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

3 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

This is a 3 Digit 7-segment display project that contains 3 x Common Cathode displays, current limiting resistors or each LED segment, 3 x PNP Transistor on each common cathode for multiplexing etc. The project works with 5V TTL signals but can be optimized for 3.3V operations by...

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1.635
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Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module

Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module

This project will help you to easily develop an Arduino compatible project that requires 4 x -7Segment 0.5" displays. The project consists of an Atmega328 microcontroller, 4 x BC847 NPN transistors to drive the common cathode displays. All displays are used in multiplexing...

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