Voltage regulation is a fundamental aspect of electronic circuit design, ensuring that components receive a stable and consistent voltage regardless of fluctuations in the input power supply. Without proper voltage regulation, circuits can experience instability, reduced efficiency, or even permanent damage to sensitive components.

Heavy-duty industrial applications, such as steel mills, railways, mining operations, and heavy machinery, require highly reliable and efficient power systems to support continuous operation under extreme conditions. In these environments, equipment often faces high power demands, frequent voltage fluctuations, and harsh physical stresses like heat, dust, and vibration.

Renewable energy systems, including solar, wind, and hybrid power generation, are becoming increasingly vital for sustainable electricity production. Efficient power conversion and reliable switching are essential in these systems to maximize energy output and maintain stable operation.

Diodes are fundamental components in modern electronics, widely used to control the flow of electrical current in circuits. Their primary function is to allow current to pass in one direction while blocking it in the opposite direction, making them essential for tasks like rectification, voltage regulation, and circuit protection.

On the afternoon of August 26, 2025, a delegation from the College of Information Science and Engineering at Harbin Institute of Technology (Weihai), led by Professor Wang, visited Donghai Semiconductor Co., Ltd. for a tour and exchange. Chairman Xia Huazhong warmly welcomed the guests and accompanied them through the company’s multimedia exhibition hall. During the visit, the delegation gained a comprehensive overview of Donghai Semiconductor’s corporate culture, development milestones, core products, and technology applications, with particular interest in the company’s achievements in innovation-driven R&D and intelligent manufacturing.

Electric vehicles (EVs) have rapidly emerged as a cornerstone of sustainable transportation, driven by global efforts to reduce carbon emissions and reliance on fossil fuels. As consumer demand for cleaner, smarter, and more efficient mobility solutions grows, the technology inside EVs continues to evolve at an unprecedented pace.

You can test a diode with a multimeter. Pick Diode​ Test or Resistance mode. Always use the right mode to get good results. When you check a diode, look for a voltage drop. It should be between 0.5 and 0.8 volts for standard types. Schottky diodes show about 0.2 volts. To test a diode, put the red probe on the anode. Put the black probe on the cathode. You can test a diode in a circuit or out of it. For correct readings, do not switch the probes by mistake. Many hobbyists see these diodes most often:

You can see fast changes in three-terminal regulator technology. Both international and Chinese companies make new products. Our newest 3-pin voltage regulator series has models like L7805CV and L7812. They use strong TO-220M packaging. They are reliable for industrial use. These products work with more voltage and use less energy. They also have better protection. The three-terminal regulator is still very important. It is used in electronics, cars, factories, and telecom.

You can put in a three-terminal regulator by following easy wiring steps and safety checks. Using a solid state voltage regulator makes things easier, even for people who are new. Safety is very important when you work with electrical parts. Many accidents happen because wires are not connected right or connectors are broken. Each year, more than 2,000 people get hurt and about 150 people die from electrical problems. Some common mistakes are open outlets, using cords the wrong way, and not securing wires well. You should always use a solid state voltage regulator the way the maker says. Checking your work and being safe helps keep you and your devices safe. Donghai Semiconductor makes solid state voltage regulator products you can trust for your projects.

You use a three-terminal regulator by connecting the input to your unregulated voltage source. Connect the ground pin to the circuit ground. Connect the output to your load. Pick the right type, fixed or adjustable, to fit your needs. Always check the pin setup and use the right capacitors. If you forget about the small quiescent current in the ground pin, your current math may be wrong. Using the wrong capacitor can make noise or interference. At Donghai Semiconductor, we design our three-terminal regulator products to help you avoid these common mistakes.