This article presents the course syllabus and introduction of the core general education course “Innovation and Rapid Prototyping” offered by Professor Chen Jiang from the School of Information Science and Technology at Peking University this semester. In this course, Professor Chen focuses on the “Prototyping” stage of innovative product development, covering three main areas: Models … Read more
Before the invention of the breadboard (in the 1960s), you had to use a technique called wire wrapping to build circuits. The wire wrap connects the circuit by linking conductive posts to a perforated board and winding wires around them. As shown in the image below, the circuit can be quite complex. The circuit board … Read more
Today, I will share with you the DC-DC boost circuit. This mainly concerns: DC-DC boost circuits, DC-DC boost module principles, and how to construct a DC-DC boost circuit. 1. What is a DC-DC Converter? A DC-DC converter is a type of power electronics circuit that can effectively convert direct current from one voltage to another. … Read more
The piezoelectric trigger switch circuit described here is a microcontroller-compatible impact sensor switch module operating on a 5V DC power supply. The entire circuit can be assembled on a standard 5×7 cm circuit board. The piezoelectric ceramic element (Pz1) can also be easily mounted on the PCB. This module provides a “logic” (H) output when … Read more
PCB Network News Sharing an interesting piece of information: using wire to create a “circuit board”. I hope it inspires colleagues in the industry. What is Freeduino? It is an Arduino UNO board without any circuit board. It interconnects components using a technique called freeform, utilizing wires or copper instead of a circuit board. It … Read more
A design is needed for an isolated circuit that outputs a variable voltage of 0~12V, with the isolated side powered by 12V. There are no specific speed requirements for the output voltage. The accuracy is not particularly critical, as it just needs to stabilize once set. The design uses an optocoupler driven by the PWM … Read more
I2C is a common serial communication interface, which is available on most processors. The I2C interface is an open-drain structure, so pull-up resistors are needed in the design to drive the high level. As shown below: Rp is the pull-up resistor, and the dashed box contains the internal I2C controller structure of the chip (for … Read more
Proteus is a professional circuit design and simulation software widely used in electronic design, embedded system development, and other fields. It is the only design platform in the world that integrates circuit simulation software, PCB design software, and virtual model simulation software into one. Download the software: Long press to recognize and follow the “I … Read more
This design guide discusses how to design RS-485 interface circuits. The necessity of balanced transmission line standards is discussed, along with an example of process control design. The article also covers line load, signal attenuation, failure protection, and current isolation under different headings. 1. Why Balanced Transmission Line Standards Are Needed This article focuses on … Read more
Complete Guide to DAC0832 Chip – Principles and Practical Applications Digital-to-analog conversion is an important aspect of electronic engineering. Today, we will explain in detail the working principle and usage of this classic chip, the DAC0832. Whether it’s for a signal generator or a control system, it can be utilized effectively. What is the DAC0832 … Read more