Patent ID: 11913848
Assignee: MEGGITT SA
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 7:
8. The sensor assembly according to claim 7, wherein:
the electronic circuitry comprises a supply voltage input terminal and a ground input terminal (240) for supplying power to the electronic circuitry;
the exhaustable power source comprises a supply voltage output terminal and a ground connector;
the 3rd switch means comprises a first FET (field effect transistor) having a gate as control terminal, and drain and source, the first FET being of the type to have high resistance with the gate near or on the same potential as the source, and source and drain being connected to one of the pairs supply voltage terminals or ground terminals of the electronic circuit and the power source;
the 1st switch means comprises, each time having a first and a second terminal,
a switch capable to be switched on and off by presence or absence of a magnetic field,
a 1st and a 2nd resistor, wherein switch, first and second resistor are connected by the first terminal, the second terminal of the switch being connected to the source of the 1st FET, the 2nd terminal of the 1st resistor being connected to the ground output terminal of the power source, and the second terminal of the second resistor being connected to the gate of the first FET;

a second switch means having a control terminal and two working terminals, the resistance between the working terminals being switchable from high resistance to low resistance by the control terminal, a working terminal being connected to the gate of theist FET, the other working terminal being connected to the ground output terminal of the power source; and
the locking arrangement having an output connected to the control terminal of the second switch means.