Patent ID: 8422186

Claim:
A programmable logic control device for monitoring a current and for signalling a circuit control device, the programmable logic control device including: (a) electrical power means for activating the circuit control device; (b) electrical circuitry means including integrated circuitry means for monitoring the current of the circuit, the electrical circuitry means including: (i) adjustable electrical signal input circuitry means to match the programmable logic control device to the current; (ii) adjustable pick-up circuitry means for adjusting a selected level of the current monitored in the circuit; (iii) adjustable time circuitry means for adjusting a time duration of the selected level of electrical current so as to command the electrical power means; (iv) control means for controlling voltage level applied to the adjustable pick-up circuitry means and time circuitry means; and (v) spaced first and second thermisters, and only a resistor disposed directly between said first and second thermister and connected directly in series thereto wherein the integrated circuitry means is packaged in a material that is resistant to nuclear radiation.