Dc Regulated Power Supply (1)

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DC Regulated Power Supply
http//www.tradeindia.com/manufacturers/dc-regulat
ed-power-supply.html
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AC/DC POWER SUPPLY

• An alternating current (AC) is an electrical
  current whose magnitude and direction vary
  cyclically,as sine wave.
• Direct current (DC) or continuous current ,
  whose direction remains constant. Its flow of
  current in streight line

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AC/DC What's the Difference?
When direct current flowing,because it is running
in streight line then it loose energy when it is
flowing.in wires. However Ac current flowing in
sine wave then it do loose energy,because at one
time its cuurent state is 0 and one its current
state is 1 so if it is loose energy then it is
recover very easily.
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How to compare AC and DC

• AC voltage is usually expressed as a root mean
  square (RMS) value, written Vrms. For a
  sinusoidal voltage

Vrms is useful in calculating the power consumed
by a load. If a DC voltage of VDC delivers a
certain power P into a given load, then an AC
voltage of Vpeak will deliver the same average
power P into the same load if Vrms VDC. Because
of this fact, RMS is the normal means of
measuring AC voltage.
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AC/DC POWER SUPPLY
Block-Diagramm
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AC/DC POWER SUPPLY
Circuit diagram
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Transformer

• Function A transformer is a device used to
  increase (step up) or decrease (step down) the AC
  voltage in a circuit.
• Properties Laminated in order to reduce power
  losses through Eddy Currents.
• Operation The way transformers operate is based
  on the principle that an alternating current in
  the primary coil will induce an alternating
  electro-magnetic-field (EMF) on the secondary
  coil due to their mutual inductance.

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What is happening inside a transformer?
1. Iron Core molecules before energizing.
2. Energizing the coil and thus magnetic flux
generation.
3. Iron Core molecules line up after energizing.