IC voltage regulators are three-terminal devices that provide a constant DC output voltage that is independent of the input voltage, output load current, and temperature. IC voltage regulators are used in power supplies that hold their output voltage constant over a wide range of load variations

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

IC switching voltage regulators are integrated circuits (ICs) that store energy in an inductor, transformer, or capacitor and then use this storage device to transfer energy from the input to the output in discrete packets over a low-resistance switch

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

Integrated circuit (IC) linear voltage regulators use voltage-controlled sources to force a fixed voltage to appear at their output terminal

High voltage diodes are designed for use in high-voltage applications

Power electronics are solid state devices or transistors capable of modulating or converting electrical power

Air pressure regulators control pressure in air lines (usually adjustable) to remove fluctuations and maintain consistent pressure for pneumatic devices

Voltage and current signal conditioners amplify or modulate AC or DC current or voltage and process signals to improve transmission

Filter, regulator, lubricator (FRL) assemblies are pre-packaged or modular assemblies of common configurations of air filters, regulators, lubricators, and gauges

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

Voltage and potential transformers are used to measure voltage in electric circuits. Their main role is to condition (step down) the voltage to be measured to levels suitable for the measuring instrument

Transient voltage surge suppressors protect against temporary excess voltage and/or current in an electrical circuit that has been disturbed

SCR power supplies use silicon controlled rectifier (SCR) topology to provide well-regulated voltage and current output

DC-DC converter chips provide a regulated DC voltage output from a different, unregulated input voltage.