Patent attributes
Magnetically-activated solid state switches can include a magnetic field sensor, control circuitry configured to implement a comparison or ON/OFF logic, an output switch, a rectifier, power regulator, and charge pump, as shown. A magnetically-activated solid state switch can include a sensor bias or driver block. An analog front end may be present to amplify and/or condition the output signals produced by magnetic field sensor. Terminals can accommodate a unidirectional DC input signal or a bidirectional or AC input signal. In the ON state, the solid state output switch is configured by the control circuitry to turn OFF at a periodic rate to maintain sufficient charge to allow the solid state magnetic field sensor to sense a magnetic field. In the OFF state, the low-power regulator can periodically turn on and provide power to the magnetic field sensor for taking a magnetic field measurement.
