Temperature shutdown

Discussion in 'General Electronics Chat' started by darxider, May 28, 2010.

  1. darxider

    Thread Starter New Member

    May 26, 2010
    Hello there,

    I would like to have a safety over-temperature shutdown for a power supply that runs a coil. There is a sensor on the coil (which I am planning to use a thermistor or AD590) that gives out a voltage which is then compared with a setpoint and if it goes above that the output goes to positive rail.

    My question is very basic probably. I would like to make an electronic latching switch that could be triggered off with the comparator's signal and stay switched off even when the temperature goes below the setpoint. How can I make this switch using digital electronics?
  2. mik3

    Senior Member

    Feb 4, 2008
    Use the comparator to trigger a set-reset latch.