Infinite high-power power supply exists in theory, not in reality. It refers to a power supply that can maintain constant terminal voltage and frequency even if disturbances occur outside the power supply. When studying the heuristic process of a power system, it is assumed that the capacity of some power sources is infinite, which is usually called an infinite power source to simplify analysis and calculation.

What is an alternating current source? An alternating current (AC) source supplies power to a load with programmable voltage, phase, and frequency for testing purposes. Measuring current is essential in electrical system applications. Equipment designed to use alternating current often requires higher voltages than direct current to ensure consistency

Three-phase power generation, transmission and distribution systems are very common around the world due to their distinct advantages over single-phase and other polyphase systems.

Programmable AC power supplies have been widely used to implement and support many product testing procedures over the years. They give test engineers complete control over the voltage, frequency and current of the unit under test (UUT). These products are used to simulate various power supply conditions and abnormal conditions that may occur in actual use of AC and DC powered products. They are also critical for providing the necessary 400 Hz or 800 Hz frequency AC power for military and avionics power subsystems.