Patent ID: 11953365
Assignee: CHENGLI LI
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The switching device of claim 9, wherein as the float moves from the second end of the second enclosure toward the first end of the second enclosure:
when the float has moved away from the second position range and has not entered the first position range, neither the first position sensor nor the second position sensor transmits the sensing signals to the detection circuit, and wherein the second operational amplifier outputs a high voltage to keep the switch closed;
when the float enters the first position range, the first position sensor transmits the first sensing signal to the inverting input terminal of the first operational amplifier, causing the first operational amplifier to output a low voltage, and wherein the output low voltage of the first operation amplifier causes the second operational amplifier to output a low voltage, which opens the switch.