Triacs and Diacs

Discussion in 'Homework Help' started by pyno, Jun 23, 2004.

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  1. pyno

    Thread Starter New Member

    Jun 23, 2004
    I need to know how a triac with diac triggering can provide adjustable power to an ac load, can anyone help???
  2. beenthere

    Retired Moderator

    Apr 20, 2004

    The circuit is the cookbook for using a diac & triac to vavy power to a load. Just make sure the triac is big enough.
  3. mozikluv

    AAC Fanatic!

    Jan 22, 2004

    a DIAC is a voltage controlled bilateral device and is triggered into conduction when the voltage across it goes beyond its breakover voltage. it is commonly used in phase control to generate gate pulses to a TRIAC or SCR,.

    furthermore DIACs gives a near perfect symetrical trigger pulses at the positive and negative breakover voltage points to minimize the DC component in the load.

    some of the uses are often used as gate triggers in the light controls, dimmers, power pulse circuits, voltage references inAC power circuits and TRIAC triggers for motor speed controls etc...

    there is another device that incorporates the DIAC & TRIAC into one package, that is the QUADRAC.
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