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2. Variable-frequency drive - Wikipedia

   en.wikipedia.org/wiki/Variable-frequency_drive

   Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...

3. Power electronics - Wikipedia

   en.wikipedia.org/wiki/Power_electronics

   An HVDC thyristor valve tower 16.8 m tall in a hall at Baltic Cable AB in Sweden A battery charger is an example of a piece of power electronics. A PCs power supply is an example of a piece of power electronics, whether inside or outside of the cabinet.

4. Charge controller - Wikipedia

   en.wikipedia.org/wiki/Charge_controller

   Charge controller circuits are used for rechargeable electronic devices such as cell phones, laptop computers, portable audio players, and uninterruptible power supplies, as well as for larger battery systems found in electric vehicles and orbiting space satellites [9]

5. Glossary of electrical and electronics engineering - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_electrical_and...

   A control strategy for variable frequency drives that models the magnetic field of the motor to control its torque. filter A circuit that selectively alters a signal based on its frequency components. filter capacitor In a power supply, a capacitor that smooths the DC voltage produced by a rectifier stage. finite impulse response

6. Inductive charging - Wikipedia

   en.wikipedia.org/wiki/Inductive_charging

   More expensive – Inductive charging also requires drive electronics and coils in both device and charger, increasing the complexity and cost of manufacturing. [ 11 ] [ 12 ] Inconvenience – When a mobile device is connected to a cable, it can be moved around (albeit in a limited range) and operated while charging.

7. Battery charger - Wikipedia

   en.wikipedia.org/wiki/Battery_charger

   Charging a 12 V lead–acid car battery A mobile phone plugged in to an AC adapter for charging. A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it.