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Step down without transformer.

Hello everyone!
I want to know that how can we step down 230V a.c to required voltage. Cell phone or laptop chargers do not have any transformer inside them. how they can step down 230V ac.

Replies

  • Abhishek Rawal
    Abhishek Rawal
    If there is not step down transformer in charger; then there maybe "Impedance circuit" in it to stepdown AC.
  • Ramani Aswath
    Ramani Aswath
    CAUTION: There can be hazardous voltages on output terminals of transformerless supply circuits. Be very careful in using such.
    Transformerless Power Supply
    #-Link-Snipped-#
    #-Link-Snipped-#
  • Er.Saumil
    Er.Saumil
    Thank you!!!

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