"Charging for 5 minutes, talking for two hours" is known to almost everyone, but how does the voltage and current of the battery of the mobile phone change within five minutes of charging the mobile phone, and how much electricity is charged to the battery within five minutes? Smart home appliances such as washing machines and refrigerators, what is the current change and power consumption in different function modes and when they are in standby? These questions actually just use a power meter will allow us to see the process and results clearly!

Hydrogen energy, as an important way of efficient and clean production and utilization of electric energy, is steadily advancing in my country, and its application scenarios continue to expand. In the "Action Plan for Carbon Peaking Before 2030" issued by the State Council, 11 items involve the field of hydrogen energy, which points out the way in many aspects such as transportation application, technological research and development and innovation. In 2021, hydrogen energy will grow rapidly in the field of commercial vehicles, especially heavy trucks, and more than 1,000 hydrogen energy vehicles will be demonstrated in the Beijing Winter Olympics, basically all of which are passenger vehicles, covering buses and group shuttles.

What is a starter motor ? A starter (also self-starter, cranking motor, or starter motor) is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. Starters can be electric, pneumatic, or hydraulic. The starter motor can effectively reduce manpower requirements, and is more rapid and reusable. It is often used in the start of automobile engines and the start of large construction machinery.

Background In electromagnetism, when the current passes through the conductor perpendicular to the direction of the external magnetic field, there is a potential difference between the two sides of the conductor perpendicular to the magnetic field and current direction.

What is a car wiring harness? Car wiring harness, like the nerves and blood vessels of a car, carries the transmission of car power and signals, and is an important part of car parts. The automotive wiring harness is mainly composed of three parts, namely cables, wrapping materials and connectors (terminals).

Programmable AC source is favored by test engineers for its wide range of applications and convenient operability. Choosing a suitable AC source is very important for the success of the test. ITECH Electronics has been committed to the R&D and manufacturing of AC power supplies with low noise, high power density, simplicity and practicality. It has 6 series of AC power supplies, with a total of more than 100 product models, covering power from 300VA to 960kVA. Engineers can choose suitable products according to different testing requirements. Appropriate testing equipment can not only guarantee the test results, but also avoid increasing the difficulty of testing and causing unnecessary cost waste.