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2. Welding power supply - Wikipedia

   en.wikipedia.org/wiki/Welding_power_supply

   The high frequency inverter-based welding machines are typically more efficient and provide better control of variable functional parameters than non-inverter welding machines. The IGBTs in an inverter based machine are controlled by a microcontroller, so the electrical characteristics of the welding power can be changed by software in real ...

3. Alternating current - Wikipedia

   en.wikipedia.org/wiki/Alternating_current

   The abbreviations AC and DC are often used to mean simply alternating and direct, respectively, as when they modify current or voltage. [ 1 ] [ 2 ] The usual waveform of alternating current in most electric power circuits is a sine wave , whose positive half-period corresponds with positive direction of the current and vice versa (the full ...

4. Motor–generator - Wikipedia

   en.wikipedia.org/wiki/Motor–generator

   An MG set used to provide a variable three phase AC voltage for an Electron Beam Welding Machine high voltage power supply. Motor–generators may be used for various conversions including: Alternating current (AC) to direct current (DC) DC to AC [4] DC at one voltage to DC at another voltage. (Also called a dynamotor, short for dynamo-motor)

5. War of the currents - Wikipedia

   en.wikipedia.org/wiki/War_of_the_currents

   The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems developed in the late 1870s and early 1880s; arc lamp street lighting running on high-voltage alternating current (AC), and large-scale low-voltage direct current (DC) indoor incandescent lighting ...

6. Power inverter - Wikipedia

   en.wikipedia.org/wiki/Power_inverter

   Inverter designed to provide 115 V AC from the 12 V DC source provided in an automobile. The unit shown provides up to 1.2 amperes of alternating current, or enough to power two 60 W light bulbs. An inverter converts the DC electricity from sources such as batteries or fuel cells to AC electricity. The electricity can be at any required voltage ...

7. Power electronics - Wikipedia

   en.wikipedia.org/wiki/Power_electronics

   DC link converters: DC Link Converters, also referred to as AC/DC/AC converters, convert an AC input to an AC output with the use of a DC link in the middle. Meaning that the power in the converter is converted to DC from AC with the use of a rectifier, and then it is converted back to AC from DC with the use of an inverter.