Power supplies are devices that produce AC or DC power.  This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters

DC power supplies accept an input power and output the desired form of DC power. Common types of DC power supplies include linear power supplies, switching power supplies, DC-DC converters, and silicon controlled rectifier (SCR) type power supplies

Medical power supplies produce conditioned outputs for medical devices, instruments, and equipment

Three phase uninterruptible power supplies (UPS) are devices that operate in conjunction with existing electrical systems to provide power conditioning, back-up protection and distribution for electronic equipment loads

Single phase uninterruptible power supplies (UPS) sit between an AC outlet (i.e., a wall outlet or power strip) and an electronic device (e.g., computer, server, or phone equipment) to provide power conditioning, back-up protection and distribution for electronic equipment loads

High voltage power supplies use linear technology to provide one or more DC outputs at voltage levels of hundreds or thousands of volts

AC power sources provide alternating power and typically have adjustable output values for the testing of component response at various voltage, current and frequency levels

DC-DC converters accept DC input and provide regulated and/or isolated DC output in various applications including computer flash memory, telecommunications equipment, and process control systems.

Power strips are used in applications where multiple AC outlets are needed, often without surge or line noise protection

Power operational amplifiers (POA) are used to increase the power of low-level signals in applications that drive low impedances or reactive loads. They dissipate excess energy as heat, deliver extensive current, and can sustain relatively high supply voltages

Power or line conditioners regulate, filter, and suppress noise in AC power for sensitive computer and other solid state equipment

RF generators and high frequency power supplies provide the power required for plasma generation, induction heating, and radar or communications applications

AC-DC adapters accept AC input voltage directly from a wall outlet, and output DC voltage.

DC to AC inverters are used for converting direct current (DC) into alternating current (AC). They are also known as DC to AC converters.

Power entry modules are composed of a connector and a mounting case with features to produce the highly conditioned output necessary for medical or sensitive instrumentation