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2. Electric power conversion - Wikipedia

   en.wikipedia.org/wiki/Electric_power_conversion

   Consumer voltage converters (also known as "travel converters") are used when traveling between countries that use ~120 V versus ~240 V AC mains power. (There are also consumer "adapters" which merely form an electrical connection between two differently shaped AC power plugs and sockets , but these change neither voltage nor frequency.)

3. Voltage converter - Wikipedia

   en.wikipedia.org/wiki/Voltage_converter

   Another requirement is to provide low-voltage electricity to a device from mains electricity; this would be done by what is usually called a power supply.Most modern electronic devices require between 1.5 and 24 volts DC; lower-powered devices at these voltages can often work either from batteries or mains.

4. Power inverter - Wikipedia

   en.wikipedia.org/wiki/Power_inverter

   A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. [2]

5. AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

   Some "universal" replacement power supplies allow output voltage and polarity to be switched to match a range of equipment. [7] With the advent of switch-mode supplies, adapters which can work with any voltage from 110 VAC to 240 VAC became widely available; previously either 100–120 VAC or 200–240 VAC versions were used.

6. IXYS Introduces 1.2KV Converter-Brake-Inverter Module with ...

   www.aol.com/2013/01/10/ixys-introduces-12kv...

   IXYS Introduces 1.2KV Converter-Brake-Inverter Module with XPT IGBT and Integrated Active Rectifiers --- Highest Level of Power Integration BIEL, Switzerland--(BUSINESS WIRE)-- IXYS Corporation ...

7. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The motor side of the unit in case Nos. 2 and 3 can be driven directly by an AC power source (typically when in inverter bypass), a 6-step double-conversion motor drive, or a 6-pulse inverter. Case No. 1 uses an integrated flywheel as a short-term energy source instead of batteries to allow time for external, electrically coupled gensets to ...