Isolated Power Supply

Electromagnetic Compatibility Design of Printed Circuit Boards

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Electromagnetic Compatibility Design of Printed Circuit Boards

Electromagnetic compatibility refers to the ability of a device or system to function properly in its electromagnetic environment without causing unacceptable electromagnetic interference to anything in that environment. The purpose of electromagnetic compatibility design is to ensure that electronic devices can suppress various external interferences, allowing them to operate normally in specific electromagnetic environments, while … Read more

Troubleshooting Inverter Circuit Boards

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Troubleshooting Inverter Circuit Boards

Troubleshooting Inverter Circuit Boards Generally speaking, the printed circuit boards on an inverter mainly include the drive board, main control board, and display board. The factors affecting the lifespan of the inverter’s printed circuit boards include the lifespan characteristics of the smoothing capacitors in the power supply section and the buffer capacitors in the IPM … Read more

Understanding Two-Wire and Four-Wire Systems in Fire Alarm Systems

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Understanding Two-Wire and Four-Wire Systems in Fire Alarm Systems

When learning about fire alarm systems, many people encounter the professional terms “Two-Wire Bus”, “Two-Wire System”, and “Four-Wire System”. So, what do they mean? What are the differences and application scenarios? Today, we will quickly clarify these common concepts! 1. Starting from the basics: Where do the Two-Wire Bus, Two-Wire System, and Four-Wire System come … Read more

How to Accurately Measure Power Supply Ripple with an Oscilloscope

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How to Accurately Measure Power Supply Ripple with an Oscilloscope

Power supply ripple testing is a crucial parameter in power quality detection, but accurately measuring power supply ripple has become a challenge for engineers. How can we overcome this problem? In fact, after searching for it thousands of times, the solution is right there in front of us. Because a DC regulated power supply is … Read more

Low Power Circuit Design Scheme for Microcontrollers

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Low Power Circuit Design Scheme for Microcontrollers

Today we analyze a classic microcontroller power supply circuit. The circuit schematic is shown below: ▲ Simplified Switch Circuit Before powering the circuit, the switch “TEST” is open, and the microcontroller is not powered through VCC. At this time, the base of T1 is grounded through R9 (100k), and is in the cutoff state. The … Read more

BLE Wall Switch Solution Without Neutral Wire Connection

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BLE Wall Switch Solution Without Neutral Wire Connection

Power Integrations has released a new design example report (DER-832) – this single live wire Bluetooth Low Energy (BLE) smart wall switch does not require a neutral wire connection and can power LED/fluorescent/incandescent bulbs from 3 W to 600 W. This design is based on PI’s high-efficiency LinkSwitch-TN2 offline switch power supply IC, featuring ultra-low … Read more

Understanding the Basics of Electric Actuators

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Understanding the Basics of Electric Actuators

Electric valve actuators are ubiquitous in today’s industrial space. They can be found in various industries and applications, including water treatment and wastewater treatment plants, hydroelectric power plants, refineries, shipyards, and many processing industries such as chemicals, food and beverage, pulp and paper, and pharmaceuticals. It is crucial for anyone responsible for selecting and operating … Read more

Basic Knowledge of LCD Screen Repair

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Basic Knowledge of LCD Screen Repair

Follow the association or click to read the original text to participate in the home appliance survey Cast your most precious vote 1. Types of LCD Screen Interfaces and Cables The LCD screen interfaces are divided into 60HZ, 120HZ, and even higher frequencies like 200HZ and 240HZ. Different frequency driver boards are required, with main … Read more

13.56MHz Wireless Charging Module White Paper

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13.56MHz Wireless Charging Module White Paper

Market Development Trends In recent years, in many application fields such as smartphones and smartwatches, the application of wireless power supply has become increasingly widespread due to the ability to eliminate charging ports and improve waterproof and dustproof performance. Similarly, in the field of small and thin devices, the demand for this very convenient wireless … Read more

Comprehensive Breakdown of a Wireless Module: Power Supply Design Insights

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Comprehensive Breakdown of a Wireless Module: Power Supply Design Insights

Today, I will dissect a DTU module for everyone. The wireless data terminal DTU module, fully known as Data Transfer Unit, is a type of IoT wireless data terminal specifically designed to convert serial data into IP data or to convert IP data into serial data, and transmit it via a wireless communication network. It … Read more