Digital Traffic Light Reference Design (with Multisim simulation circuit + principle document)

Schematic PCB

Common component 3D model package library - Altium Designer

The resource is a 3D package library (STEP model) of common components available for Altium Designer, including 42 3D model libraries of common SMD components; 17 inductors, resistors and capacitors; 38 common connectors; 34 common light-emitting and display devices, a total of more than 130 exquisite 3D models of common components.

Schematic PCB

Homemade 10KV electronic load

Commercial electronic loads are more expensive, especially high-power loads such as computer power supplies that must handle transient current spikes well above their nominal ratings (1800W spike for a 600W GPU) and should be tested under worst-case conditions to Ensure stability.

Schematic PCB

Open source current probe based on Rogowski coil

Schematic PCB

10kHZ-255MHz signal generator OLED LCD

Schematic PCB

Simple, high-quality condenser microphone DIY for under $100

Schematic PCB

PCF2131/PCA2131 Arduino ^® Shield expansion board

Schematic PCB

SD/SIM Level Converter Evaluation Board

Schematic PCB

PCF85063TP-ARD Evaluation Board

Schematic PCB

PCA85263ATL-ARD Evaluation Board

Schematic PCB

SC18IM704-EVB: UART to I2C ^bridge evaluation board ^new

PCF2131-ARD: PCF2131/PCA2131 Arduino ^® Shield expansion board

SC18IS604-EVB: SPI to I2C ^Bridge Evaluation Board ^new

SC18IS606-EVB: I ² C to SPI Bridge Evaluation Board ^new

Filter circuit (various design solutions + schematic diagram).rar

Filter circuit (various design solutions + schematic diagram)

Schematic PCB

Design of dual-tone doorbell circuit based on 555 timer

Design of dual-tone doorbell circuit based on 555 timer

Schematic PCB

OM13514: PC evaluation board for I²C-bus RTC PCF85363A

OM13506: PCF8553 LCD Demonstration Board

Schematic PCB

OM13512: Demo board for SPI bus RTC PCF2123

OM13513: RTC demo board contains PCF2127T and PCF2129AT