The above Ad will no longer appear after you Sign Up for Free!

Dimmer response time

Discussion in 'Wiki' started by STEVETERRY, Aug 16, 2008.


    STEVETERRY Well-Known Member

    Likes Received:
    New York
    Response time is the time required for a dimmer to turn on a load from off to its level, when commanded to do so via a DMX512 level change. Thyristor dimmers are typically very fast (20-50 milliseconds), while sine wave and IGBT dimmers may be slower, due to the fact that they must limit inrush current from a cold lamp filament to protect the transistor power handling devices in the dimmer. Inrush current from a cold filament may be 20X normal lamp operating current.

    Response time should never be confused with rise time, which is the turn-on (or turn-off in a reverse phase-control dimmer) time in each half cycle of the power devices in a phase-control thyristor or IGBT dimmer. Rise times are measured in microseconds, while response time is typically measured in milliseconds.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice