Circuit breaker, clearing a fault current

AI Thread Summary
The discussion revolves around a circuit design using a Schmitt trigger configuration, a MOSFET, and a mechanical switch to clear fault currents. Participants clarify that a closed switch causes higher than normal current through the MOSFET, which leads to voltage changes at the inverting input of the Schmitt trigger. The output of the Schmitt trigger controls the MOSFET, turning it on or off based on the current levels, but concerns arise about the timing and behavior of the switch and MOSFET during fault conditions. Additionally, there are inquiries about achieving specific voltage references and managing the switching characteristics of the circuit. The conversation highlights the complexities of designing reliable fault-clearing mechanisms in electronic circuits.
  • #51
A capacitor connected from the positive supply to pin 3 of the OP-AMP should ensure the Schmitt trigger powers up with its output high. Try 0.01uF.
 

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