a device used as part of an electronic device, which transforms electrical current from an AC line circuit to DC for use in electronic devices, and which can use either 110 volt or 220 volt AC line curent.
A power supply which achieves its output regulation by means of one or more active power handling devices which are alternately placed in the "off" or "on" states. It is more efficient than linear supplies which vary the conduction of power devices to achieve output regulation.
A type of power supply that uses a high frequency oscillator prior to the transformer so that a smaller, lighter transformer may be used. These power supplies are commonly used in synthesizer modules.
a device transforming the voltage from one level to another
a good replacement solution for the old supplies
The portion of a PC, Workstation, Server or other computing device that converts incoming AC power to the various DC voltages required by the internal components within the computer. Switching power supplies were incorporated into early PC designs due to their ability to withstand short duration losses in power of up to 100-200 milliseconds without rebooting computers. This is so because switching power supplies do not pull power continuously. Instead, they pull power in "gulps" several times per second.
A power supply that uses switching transistors (on-off) to increase the efficiency of the power conversion, rather than the simple transformer/rectifier design of traditional power supplies.