DER-357 – 12 W Triac Dimmable LED Driver

This document is an engineering report describing the design of a non-isolated, buck-boost LED driver (power supply) using the LYTSwitch family device LYT4313E.
The DER-357 provides a single 12 W triac dimmable constant current output. The main design goal is to achieve high efficiency to increase luminous efficiency and reduce size. This allows the driver to fit into the BR40 lamp and be as close to the production design as possible.

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R_60_V10 design based on IPS2 motor commutation sensor

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Multifunctional buffer for WS2813 LED strip

2 Layers PCB 10 x 16.5 mm FR-4, 1 mm, 1, HASL with lead, White Solder Mask, Black silkscreen; WS2813 buffer and repeater for long range serial transmission

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DER-429 - 18 to 25W Isolated Flyback, Constant Current and Constant Voltage LED Driver

Schematic PCB

DER-359 - 8 W non-isolated step-down, triac dimmable, power factor corrected LED driver using LYTSwitchTM-4 LYT4312E

This document is an engineering report describing the design of a non-isolated, step-down LED driver (power supply) using the LYTSwitch-4 series device LYT4312E.
DER-359 provides a single 8 W dimmable constant current output.
The main design goal is to achieve high efficiency to increase luminous efficiency and reduce size. This allows the driver to fit into the BR30 lamp and be as close to the production design as possible.

Schematic PCB

R_158_V10 Design based on IPS2 motor commutation sensor

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R_95_V10 Design based on IPS2 motor commutation sensor

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R_77_V20 Design based on IPS2 motor commutation sensor

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R_94_V10 Design based on IPS2 motor commutation sensor

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R_75_V10 design based on IPS2 motor commutation sensor

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2021 Undergraduate Electronic Design Competition Title D Provincial Second Work (Internet-based Camera Measurement System)

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R_64_V10 design based on IPS2 motor commutation sensor

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DER-442 - 30W Isolated Flyback, 1 - 10 V Analog Dimmable LED Driver

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DER-395 - 14.35 W triac dimmable non-isolated LED driver for PAR30 lamps

This document describes a non-isolated, high power factor (PF), high efficiency, triac dimmable LED driver that operates from an input voltage range of 195 VAC to 265 VAC (50 Hz typical). The LED light string provides a driver with a rated voltage of 41 V and a rated current of 350 mA.
The topology used is a single-stage, non-isolated, tapped buck topology, which can meet the high power factor, constant current adjustment and dimming requirements of this design.
This document contains LED driver specifications, circuit schematics, PCB design details, bill of materials, transformer specification files and typical performance characteristics.

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R_147_V10 Design based on IPS2 motor commutation sensor

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R_84_V10 Design based on IPS2 motor commutation sensor

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R_110_V10 design based on IPS2 motor commutation sensor

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DER-508 - 4.75 W dual output power supply

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Smoke/Carbon Monoxide Detector

The intelligent smoke detector has voice and location functions, consumes less than 1 μA in standby mode, and provides clear and soft voice alarms to inform you of the composition and location of smoke, allowing you to avoid dangers at home.

R_58_V10 Design based on IPS2 motor commutation sensor

Schematic PCB