An inverter circuit is used to convert:

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ALP CBT 2 Electrician Previous Paper: Held on 23 Jan 2019 Shift 1
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  1. D.C. to A.C.
  2. Low frequency to high frequency
  3. A.C. to D.C.
  4. High frequency to low frequency

Answer (Detailed Solution Below)

Option 1 : D.C. to A.C.
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  • An inverter is an electronic circuit that converts low voltage DC into high voltage AC power.
  • An inverter may take the 12, 24, or 48 volts DC and convert to 230 volts AC.
  • Step-up transformer is used in home inverters.
  • The main power AC is supplied to the inverter, and it is transformed into DC simultaneously, which keeps charging the battery continuously.
  • There are a sensor and relay structure that always monitors the ON or OFF status of the main supply.
  • Rectifier is an electrical device which convert A.C. to D.C.
  • A frequency changer or frequency converter is an electronic or electromechanical device that converts alternating current (AC) of one frequency to alternating current of another frequency.
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