Variable power supply with touchscreen interfaces

Discussion in 'General Electronics Chat' started by Md Napie, Aug 9, 2015.

  1. Md Napie

    Thread Starter New Member

    Aug 9, 2015
    1
    0
    Hello,
    My friend and I are designing a variable DC power supply controlled by using touchscreen and arduino. Our super told us to use pwm to control the voltage regulator instead of using variable resistor or potentiometer. What kind of semiconductor devices (TRIAC, DIAC, MOSFET, etc..) can we use to control the regulator from the touchscreen?

    We really do hope you'll help us because we are new in this things (PWM and touchscreen).

    thanks.
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,440
    368
    And the specification for the proposed power-supply is...?

    You can control any device from a touchscreen but that is not the issue.
     
  3. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    So this is a homework?
     
  4. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    Typically, a power MOSFET is used as the switching device. There are lots of IC's available that do the PWM, and it's possible to use the arduino too. Search for 'switch mode power supply', you'll get tones of information.
     
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