PSR-25 and SSR

Discussion in 'General Electronics Chat' started by winestill, Dec 8, 2012.

  1. winestill

    Thread Starter New Member

    Nov 1, 2011
    Hi guys.

    I have two questions related to psr-25 and ssr.

    Can someone explain to me how the psr-25 voltage regulator works, f.e. using circuit or something.

    I want to setup a heating element controller using ssr and 555 timer circuit and I was wondering if it's OK to have the timer at 0.5 second or so, maby lower? My controller should not produce surges with the water.
    And maby one more thing, how low can the timer be so my ssr won't break?

    Thanks, Winestill.
  2. bertus


    Apr 5, 2008

    It looks like the PSR-25 is a phase-cutting power regulator.
    It needs an external ISOLATED potentiometer to regulate the power.
    (see attached datasheet).

    What has the water to do with the power regulator?

  3. winestill

    Thread Starter New Member

    Nov 1, 2011
    PSR: So it is like a normal dimmer?

    We are making a ethanol fuel still and we don't want a surge because that would ruin our run. So it doesn't matter if it's water or ethanol.
    And if the SSR is cutting power for a long time our run wouldn't be smooth enough. That's why I'm asking if it's ok to run the ssr at 2 hz or so, maby lower.