DER-547-275W PFC front end

Schematic PCB

DER-750 - 42 W 2-Stage Boost and Isolated Flyback Dimmable LED Ballast Using HiperPFS-4 and LYTSwitch-6

Schematic PCB

DER-733 - 65 W 2-stage PFC boost and isolated flyback dimmable LED ballast using HiperPFS-4 and LYTSwitch-6

Schematic PCB

RDR-801 - 100 W 2-Stage Boost and Isolated Flyback Dimmable LED Ballast Using HiperPFS-4 and LYTSwitch-6

Schematic PCB

DER-843 - 42 W 2-Stage Boost and Isolated Flyback PWM Dimmable LED Ballast Using HiperPFS-4 and LYTSwitch-6

Schematic PCB

DER-847 - 50 W 2-Stage Boost and Isolated Flyback 3-in-1 Dimmable LED Ballast with Color Temperature Control

Schematic PCB

DER-901 - 125 W 2-stage boost and isolated flyback 3-way dimmable LED ballast using HiperPFS-4 and PowiGaN based LYTSwitch-6

Schematic PCB

DER-920 - 65 W 2-stage boost and isolated flyback 3-way dimmable LED ballast using HiperPFS-4 and PowiGaN based LYTSwitch-6

Schematic PCB

DER-720 - 275 W PFC front end using HiperPFS-4 with integrated diode

Schematic PCB

RDR-292 - Reference Design Report for 150 W LLC Power Supply for LED Street Lighting

Schematic PCB

RDR-648 - 150 W Power Factor Corrected LLC Power Supply Using HiperPFS-4 and HiperLCS

Schematic PCB

Intelligent lighting design based on LPC860 MCU

This smart lighting solution is based on the low-cost LPC860 MCU reference design. It provides an IEC 62386-101 compliant transceiver, a 3-channel high-efficiency LED driver, and sensor communication interfaces for a variety of analog and digital sensors. The solution is designed to provide customers with low-cost and comprehensive solutions for connected smart lighting products.

NFC controlled machine access

Building/Home Automation

air conditioner

thermostat

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

Schematic PCB

Thermometer based on face recognition

This work is a thermometer based on face recognition. The appearance of the work is a temperature measuring gun. The work is mainly composed of the K210 kit provided by Sipeed, Hetai HT32F52352 chip, WIFI communication module, cloud server, IC card reader module and LDO power module. etc., the K210 is controlled by the HT32 chip to collect images in real time, and the collected images are processed locally. If there is facial information in the collected images, the facial features are extracted based on the face model, and then compared with the person in the image library. Compare the feature values ​​of the face, and return the recognition results to the HT32 chip and the host computer for us to view the temperature measurement results. The following is a physical picture of the overall work and an introduction to its functions.

Schematic PCB

Contactless face recognition access control system

In the epidemic environment, people don't want to touch things outside, so we create a face recognition access control system that does not require contact. When it is detected that a person is approaching the door, the face recognition device is awakened to save power consumption. When the face recognition passes, the door is controlled to open.

Schematic PCB

WS2813 WLED fixed buffer

2-layer PCB 9 x 11.4 mm FR-4, 1 mm, 1, HASL with leads, blue solder mask, white silkscreen; very small buffer for WS2813 LED strip.

Schematic PCB