BJT, or bipolar transistor, commonly known as triode, is an electronic device with three terminals, made of three parts of semiconductors with different degrees of doping, and the charge flow in the transistor is mainly due to the diffusion of carriers at the PN junction and the drift motion. Bipolar transistors are capable of amplifying signals and have better power control, high-speed operation, and durability, so they are often used to form amplifier circuits or to drive devices such as speakers and motors, and are used in a wide range of applications such as aerospace engineering, medical devices, and robotics.

In energy storage systems, the testing and validation of the battery management system (BMS) is a crucial part. To ensure that the BMS can accurately collect voltage and current information and respond correctly under various complex battery states, it becomes especially important to simulate the behavior of the cells and packs. The IT2700 Multi-channel Modular Power System, with its powerful multi-channel serial and parallel capabilities, provides an ideal solution for energy storage BMS testing.

In modern industrial testing, energy recovery, and power electronics, Back-to-Back Motor technology has become an important approach for efficient testing and energy-saving applications. Compared to traditional mechanical load testing methods, back-to-back motor systems enable more precise and energy-efficient testing and control through closed-loop energy flow between a motor and a generator. This technology is widely used in motor testing, inverter validation, electric vehicle (EV) powertrain evaluation, renewable energy applications, as well as in high-end manufacturing industries such as aerospace.

The development of automotive electrical and electronic systems has evolved from simplicity to complexity. Early vehicles were equipped with basic circuits for ignition and lighting. In the mid-20th century, with the rise of semiconductor technology, voltage regulators and transistor ignition systems were gradually adopted. After the 1980s, the microprocessor revolution drove the widespread use of electronic control units (ECUs), enabling the digital control of core components such as engines and transmissions. In the 21st century, the development of in-vehicle network architectures and intelligent sensors made distributed electronic systems possible, leading to the emergence of 48V mild hybrid systems and high-voltage electrical platforms. Currently, automotive electrical and electronic systems are evolving toward domain controller architectures, supporting advanced driver-assistance systems (ADAS) and connected vehicle functions. Their complexity has surpassed that of traditional mechanical systems, becoming the technological core of modern vehicles.

As the demand for reliability in high-power, high-voltage testing equipment continues to rise in the renewable energy and power electronics industries, the ITECH IT8400 series high-performance DC electronic load has become the industry's recognized "top-tier" choice. With advanced component selection, innovative thermal management, and precise measurement performance, the IT8400 continuously supports critical applications such as fuse withstand testing, DC charging stations, and DC-DC module performance validation, meeting the stringent requirements of 24/365 continuous operation on production lines.

New energy vehicle sales continued to grow strongly in 2023, a year in which major automakers not only made significant breakthroughs in powertrain and battery technology, but also explored in-depth intelligence and internet connectivity.