Voltage multipliers are AC to DC conversion devices that produce high-potential DC voltage from a lower voltage, AC source

RF frequency multipliers are nonlinear devices that produce an output signal with a frequency that is larger than the frequency of a corresponding input signal by a predetermined factor

Phase-locked loop (PLL) frequency synthesizers are electronic devices that produce frequencies coherent to a reference frequency.

Comb generators create harmonic frequencies from which one frequency can be selected with a narrow filter and filtered out.

DC motors are most commonly used in variable speed and torque applications. They include brushless and gear motors, as well as servomotors

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

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

Voltage dividers and voltage references provide highly-accurate reference voltages for calibration and testing purposes

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

DC servomotors are generally small and powerful for their size, and easy to control. Common types of DC servomotors include brushless or gear motors

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

Frequency-to-voltage converters accept a signal and convert its frequency to a corresponding analog voltage level

Gearmotors consist of an AC or DC motor with an integral gearbox or gear head that steps delivered speed up or down