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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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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1.507
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4 Digit Common Cathode 0.5″  – 7 Segment Display Module (Multiplexed)

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

This 4 Digit 7 segment display project contains 4 x Common Cathode displays, current limiting resistors or each LED segment, 4 x PNP transistors on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

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1.224
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2 Digit Common Cathode 0.5″ – 7 Segment Display Module (Multiplexed)

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

This 2 Digit 7 segment display project contains 2 x Common Cathode displays, current limiting resistors or each LED segment, 2 x PNP Transistor on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

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1.291
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4-Channel Remote Receiver Using NRF24L01 Radio Module – Arduino Compatible

4-Channel Remote Receiver Using NRF24L01 Radio Module – Arduino Compatible

Controlling 4 devices using an RF remote is very easy with this project. This is an Arduino compatible project. NRF24L01 module, Atmega328 microcontroller, 3.3V regulator, and few other components are part of the project. Onboard power LED and an additional functional LED is provided....

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