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
Hello everyone, I am Yi. Let’s continue with the design and selection of current detection circuits. In the previous article, we analyzed the resistance method for measuring current, and found that the limitation of the resistance method is that it introduces power loss, making it unsuitable for measuring large currents. For measuring large currents, Hall … Read more
1. If you want to access more electronic design materials and microcontroller study resources, please search for “Zhenxing Network” on Baidu, and click the first link in the search results to enter the website; 2. If you want to get started with the STM32 microcontroller, please pay attention to the crowdfunding activity initiated at the … Read more
Don’t want to miss my updates? Go to the top right corner – View public account – Set as Starred 1. Find and Download Components Search for the components you need at the following website: https://componentsearchengine.com Here, I will take the AMS1117-3.3 as an example. After clicking, the following interface will appear. If you want … Read more