Patent ID: 7701275

Claim:
A time-limiting protection and control circuit for protecting an element by limiting a pulse width of an input pulse, the time-limiting protection and control circuit comprising: an exclusive-OR gate (XOR gate) having a first input terminal and a second input terminal; a delay circuit having a first terminal coupled to the first input terminal of the exclusive-OR gate, and a second terminal coupled to the second input terminal of the exclusive-OR gate, wherein the delay circuit comprises: an active high Schmitt trigger having an input terminal and an output terminal coupled to the first input terminal of the exclusive-OR gate; a first resistor having a first terminal coupled to the input terminal of the active high Schmitt trigger, and a second terminal coupled to the second input terminal of the exclusive-OR gate; and a capacitor having a first terminal coupled to the first terminal of the first resistor, and a second terminal coupled to ground; and a discharging circuit having a first terminal coupled to the input terminal of the delay circuit, and having a second terminal coupled to the second input terminal of the exclusive-OR gate.