Power Supplies

Power Supplies

Power Supplies supply regulated power to devices we see every day. From computers and cell phones to televisions and plant instrumentation, the power supply provides regulated power for proper operation. Power Supplies Course Objectives Describe the operation of a power supply rectifier. Explain the function of a power supply filter. Describe the operation of a… Read More »

Uninterruptible Power Supplies

Uninterruptible Power Supplies

Uninterruptible Power Supplies (UPS) provide backup power on loss of main power to a system. The UPS is sometimes called a switching power supply and differs from a backup system, such as a diesel, in that it provides instantaneous switchover on loss of power. The principles of operation are the same whether backing up a… Read More »

Fuses

Fuses

Electrical circuits and components are rated to withstand a certain amount of current flow. Excessive current in a circuit results in overheating and destruction of components. Various protective methods can prohibit the occurrence of overheating by creating a weak link in the circuit that will fail under certain conditions. A commonly used protective device is… Read More »

Circuit Breakers

Circuit Breakers

The Circuit Breakers serves the same purpose as the fuse, with some notable advantages. Not only is a circuit breaker resettable, it is safe, reliable, tamper proof, and can be used, if specifically designed to do so, as a circuit control device that can switch power on and off to a connected system. This module… Read More »

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