Voltage source in series with current source has constant current and is equivalent to current source.
Voltage source in parallel with a current source has constant voltage and is equivalent to a voltage source.
Expanded Information
Ordinary power supply can be divided into switching power supply, inverter power supply, AC regulated power supply, DC regulated power supply, DC/DC power supply, communication power supply, modular power supply, inverter power supply, UPS power supply, EPS emergency power supply, purification power supply, PC power supply, rectifier power supply, custom power supply, heating power supply, welding power supply/arc power supply, electroplating power supply, network power supply, power operation power supply, adapter power supply, linear power supply, power controller/driver, power power supply, other general power supply, inverter power supply, parameter power supply, voltage regulator power supply, transformer power supply.
Specialty power supplies can be divided into shore power supplies, security power supplies, high-voltage power supplies, medical power supplies, military power supplies, aerospace power supplies, laser power supplies, and other specialty power supplies.
Special power supply is a special kind of power supply. The so-called special is mainly due to measure the technical specifications of the power supply requirements are different from the commonly used power supply, which is mainly the output voltage is particularly high, the output current is particularly large, or the stability, dynamic response and ripple requirements are particularly high, or the power supply is required to output voltage or current is a pulse or some other requirements. This makes the design and production of such power supplies have more special and even more stringent requirements than ordinary power supplies.
Specialty power supply is generally designed for special loads or occasion requirements, it is widely used. Mainly: electroplating electrolysis, anodic oxidation, induction heating, medical equipment, power operation, power test, environmental protection, dust removal, air purification, food sterilization, laser infrared, photoelectric display. In the national defense and military, special power supply has more common power irreplaceable use, mainly used for: radar navigation, high-energy physics, plasma physics and nuclear technology research.
Baidu Encyclopedia: Power Supply