Checking and Locating Circuit Board Short Circuits

Checking and Locating Circuit Board Short Circuits

The issue of short circuits on circuit boards is frequently encountered in practical work. Some believe that only novice hardware engineers make mistakes with short circuits. This is not true; many experienced hardware engineers also face this problem. This issue is not only related to design but also closely tied to material quality and the … Read more

How to Properly Choose A, B, C, D Mini Circuit Breakers?

How to Properly Choose A, B, C, D Mini Circuit Breakers?

The mini circuit breaker, abbreviated as MCB, is a widely used circuit breaker product with a vast range of applications. Its main function is to provide protection for electrical distribution devices at building electrical terminals. It is suitable for overload and short-circuit protection of circuits with an AC rated voltage of 230/400V at a frequency … Read more

Understanding A, B, C, D Mini Circuit Breakers

Understanding A, B, C, D Mini Circuit Breakers

When it comes to mini circuit breakers, most electrical personnel are probably familiar with them. However, when discussing the selection of A, B, C, and D mini circuit breakers, many electrical personnel may have only a vague understanding, and some may be completely unaware. We all know that mini circuit breakers, abbreviated as MCB, are … Read more

Why Does the Circuit Board Make a ‘Ticking’ Sound?

Why Does the Circuit Board Make a 'Ticking' Sound?

After the delivery of a previous design project, due to an operational error by the on-site debugging personnel, the exposed wire ends touched the circuit board (which was coated with a conformal coating) when the rear panel of the device was opened, ultimately causing a short circuit. The feedback from the site indicated that the … Read more

Can You Short-Circuit the Signal Line if the Sensor is Broken?

Can You Short-Circuit the Signal Line if the Sensor is Broken?

Search on WeChatTechnical Training First, it is important to clarify that if the sensor is already broken, it is meaningless to short-circuit it! The sensor, as the first line of defense for measuring input, converts the measured variable into a measurable signal, which can be an analog signal, a digital signal, or other forms of … Read more

How to Use a Multimeter to Check for Short Circuits, Open Circuits, and Leakage

How to Use a Multimeter to Check for Short Circuits, Open Circuits, and Leakage

When checking for short circuits, open circuits, or leakage in a circuit, we usually use a digital multimeter or an analog multimeter for testing in actual repairs. However, the principles of digital and analog multimeters are different, so there are slight differences in checking with an analog multimeter and a digital multimeter. Below, we will … Read more

Testing Short Circuit Current of STM32 Microcontroller I/O Ports

Testing Short Circuit Current of STM32 Microcontroller I/O Ports

1. Introduction   This is the test circuit board made for the STM32 microcontroller. The main purpose is to verify whether the software development tools are functioning normally in the newly installed computer. The microcontroller software can now be downloaded via probe clips. Below, using this test circuit board, we will perform a hazardous measurement. We … Read more