KL46Z Magnetic Rotary Encoder Reference Design

Magnetic rotary encoder for angle measurement with contact-free knob

OM15020: JN5169 USB Dongle for ZigBee

3-phase AC 400V input PFC converter

This reference design provides design guidance, data and other content for a 4kW 3-phase AC 400V input PFC converter using a 3-phase totem pole topology and 1200V SiC MOSFETs.

Schematic PCB

PEmicro Cyclone FX Programmer

Schematic PCB

FRDM-MC12XSF: Freedom HW for MC12XSF and MC12XS6 series

This freedom board covers MC12XSF and MC12XS6 families and ease its usage thanks to its quick evaluation tolls (Spigen or KDS) with different Kinetis MCU.

Schematic PCB

NOVATO (MAXREFDES16#): 4-20mA loop powered temperature sensor with HART function

The Novato reference design (MAXREFDES16#) is a 16-bit, high-accuracy, loop-powered temperature transducer that transmits temperature information from a remote object to the central control unit over a 4–20mA current loop and using the highway addressable remote transducer (HART) communication protocol.

Schematic PCB

2021 College Student Electronic Design Contest Topic H Outstanding Works Collection (Electrical Appliance Analysis and Identification Device)

Schematic PCB

Design of temperature acquisition and alarm system based on STM32 (source program, schematic PCB, etc.)

When the temperature is lower than the set threshold, the corresponding indicator light lights up and the corresponding relay is closed. The relay can drive the load (fan, refrigeration plate, heating tube, etc.). When the temperature is higher than the alarm value, the sound and light alarm will sound. The keys are setting keys, plus key and minus key. The alarm value and temperature control range can be set, the temperature measurement range is 0 to 99.9 degrees Celsius, and the accuracy is 0.1 degrees Celsius.

Schematic PCB

Universal motor control evaluation board based on STM8S103F2 MCU and T1235T Triac

Universal motor control evaluation board based on STM8S103F2 MCU and T1235T thyristor

Schematic PCB

5V/0.6A Buck Converter Based on VIPER319X

5 V / 0.6 A Buck converter based on VIPER319X

Schematic PCB

MAXREFDES1221: Boost single-output, 2.6V to 4.5V input, 12V/833mA output DC-DC converter using MAX669

This reference design boosts a single-cell battery voltage to a 10W output using the MAX669 controller in the bootstrapped mode.

Schematic PCB

Breadboard without jumpers: Based on Raspberry Pi Pico, analog switch matrix replaces jumpers

Flirting with jumper caps is a common practice on most boards, but not this board, which is designed to replace all those wires with an analog switch matrix. All one has to do is plug in the device and make a virtual connection on the accompanying GUI. There are also many built-in functions such as DAC and ADC, and the circuit can be switched under the prototype as needed. It also has some LEDs embedded in the breadboard area that light up and provide visual cues that they are connected to each other.

Schematic PCB

1kW Full-Bridge DC-DC Converter

This reference design provides design guidelines, data, and more for a 1kW server power supply using a phase-shifted full-bridge DC-DC converter.

Schematic PCB

CN0216

Precision electronic scale design using 24-bit Σ-Δ ADC AD7791 and external zero-drift amplifier ADA4528-1

Schematic PCB

Resonant LCC 90W notebook power adapter based on L6599 and STP9NK50ZF

Resonant LCC 90 W laptop power adapter based on L6599 and STP9NK50ZF

Schematic PCB

Indoor environment monitoring terminal

The indoor environment monitoring terminal can monitor the indoor environment (temperature, humidity, lighting and other parameters). The terminal is equipped with a liquid crystal display module; it can realize real-time display of environmental parameters and clocks. The terminal is equipped with an audible and visual alarm circuit, which can set a certain When the parameters exceed the limit value, an audible and visual alarm will be issued; the terminal is equipped with a Bluetooth function, and the mobile phone can communicate interactively with the terminal through Bluetooth. It can realize functions such as detection terminal system time upload, real-time parameter query, sound and light alarm switch control, scheduled upload switch control, and alarm threshold setting.

Schematic PCB

Quark: ESP32-based electronic measurement and debugging tool

Quark based on ESP32 is an open source electronic tool that integrates electronic measurement probes and debugging tools. It has a wireless connection function and can be connected to APP.

Schematic PCB

DC 300V input BLDC motor without Hall control circuit using TPD4204F

This reference design provides design guidelines, data, and other content for a DC 300V input BLDC motor Hall-less control circuit using intelligent power devices. It implements vector control using an MCU designed specifically for motor control.

Schematic PCB

Drone Electronic Speed ​​Controller Reference Design

Electronic speed controller reference design for drones

Schematic PCB

Xenon lamp ballast

There is a risk of electric shock and fire with this project! Light bulbs are essential devices in our lives. Incandescent and fluorescent light bulbs are typical light bulbs for household lighting fixtures. For industrial and public purposes such as street lighting, large indoor lighting, sports field lighting and any outdoor activities, apart from these bulbs, HID (High Intensity Discharge) lamps are also widely used. Typical HID lamps used for this purpose are high pressure sodium, metal halide, and mercury lamps. The last one has been banned in 2021 by the Minamata Convention on Mercury. Fixtures with incandescent and fluorescent bulbs, long used for home lighting, became obsolete within 10 years of the widespread adoption of LED lights, and currently offer only replacement bulbs. Low-wattage HID lamps are also gradually being replaced by LED lamps. High-wattage HID lamps still dominate the mainstream of large-scale lighting because the advantages of LED lamps at this level are smaller. Like many LED geeks, I built an LED fixture because it was rare, but when it became commonplace it stopped being fun. On the other hand, my nostalgia for the disappearance of glass tubes from our lives increased and I started collecting HID lamps as a light bulb geek. However, having only light bulbs makes no sense. In order to light a HID lamp, a lamp ballast rated for each bulb is required. Therefore, I designed and built an electronic HID ballast that can light a variety of HID lamps.

Schematic PCB