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Home >> AC to DC Convertor >> AC to DC Convertor 18V/7Amp.
AC to DC Convertor 18V/7Amp.

AC to DC Convertor 18V/7Amp.



Connection Diagram | Downlaod Catalogue
Description:
AC to DC CONVERTORS ARE AN EXTRAORDINARY ARREY OF HIGH FREQUENCY ALTERNATIVE.
THESE ARE THE SWITCHING REGULATORS THAT OFFERS HIGHER EFFICIENCY THAN THE LINER REGULATORS. IN ADDITION, THEY CAN STEP-UP, STEP-DOWN AND INVERT THE INPUT VOLTAGE.
WORKING PRINCIPLES
        A SWITCHING REGULATOR IS A CIRCUIT THAT USES AN INDUCTOR, A TRANFORMER, AND A CAPACITOR AS ENERGY-STORAGE ELEMENT TO TRANFER ENERGY FROM INPUT TO OUTPUT IN DISCRETE PACKETS.
FEEDBACK CIRCUITRY REGULATES THE ENERGY TRANFER TO MAINTAIN A CONSTANT VOLTAGE WITHIN THE LOAD LIMITS OF THE CIRCUIT.
THEY USE SOME FORM OF PULSE-WIDTH MODULATION TO ALTER THE ON TIME RELATIVE TO THE OFF TIME TO EFFECT CONTROL.  THE DEVICE IS USED IN THIS  TO GIVE THE CONSTRAINTS OF FREQUENCY AND THE SPEED ARE POWER ‘FETs’
THE USE OF POWER ‘FETs’ WITH FAST TURN-ON AND TURN-OFF CHARACTERISTICS HAVE MADE SWITCHES THAT OPERATE COMFORTABLE AT FREQUENCY ABOVE 100KHz PRACTICAL.
THERE ARE TWO TOPOLOGIES ARE USED
1.  FORWARD CONVERTERS
2.  FLYBACK CIRCUITS.
FORWARD CONVERTERS ARE USED IN MEDIUM AND HIGH POWER APPLICATIONS. THEY CAN BE RECOGNIZED BY THEIR POWER TRANSFORMER AND OUTPUT CHOKE.
FLYBACKS ARE FAVORED FOR LOW POWER APPLICATIONS BECAUSE THEY EMPLOY A TRANSFORMER THAT DOUBLES AS THE INPUT CHOKE .
USING A TRANSFORMER AS THE ENERGY-STORAGE ELEMENT ALSO ALLOWS OUTPUT VOLTAGE TO BE ELECTRICALLY ISOLATED FROM THE INPUT VOLTAGE.



Technical Specification:
Switch Mode Power Supply
Model No. ---PE-PS-18V-7A
1.     Output Voltage                                              : 18 VDC
2.     Output Current                                               :  7 Amp.
3.     Input Voltage                                                 : 140-260 VAC
4.     Ripple Voltage                                               : 50-80 mVDC
5.     Efficiency                                                       : 90%
6.     Output Load Regulation                                 : 0.20 to 0.30 %
7.     PCB Size (HxWxL)                                          : 36x96x175 mm
8.     Box Size (HxWxL)                                          :  55x102x200 mm
9.       Approvals                                                     : CE Approved
 


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