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US 12,177,947 B2Granted
Magnetic induction circuit, magnetic-controlled switch circuit, circuit board, magnetic-controlled device, and magnetic-controlled lamp
AssigneeShenzhen Above Lights Co., Ltd.
InventorsGuogang Peng, Zhifu You
Life of this patent
Estimating the term…
Abstract
A magnetic induction circuit, a magnetic-controlled switch circuit, a magnetic-controlled device and a magnetic-controlled lamp. The magnetic induction circuit includes a magnetic induction module, a voltage comparison module and a voltage output module. The magnetic induction module is configured to sense an external magnetic field to generate a first voltage signal. The voltage comparison module is configured to receive the first voltage signal, and output a second voltage signal. The voltage output module is configured to process the second voltage signal and output a third voltage signal.
Claims18
A magnetic induction circuit, comprising:
- a magnetic induction module;
- a voltage comparison module;
- and
- a voltage output module;
- wherein the magnetic induction module is configured to sense an external magnetic field and output a first voltage signal;
- an input end of the voltage comparison module is connected to an output end of the magnetic induction module;
- and the voltage comparison module is configured to receive the first voltage signal, and compare the first voltage signal with a reference voltage to output a second voltage signal;
- an input end of the voltage output module is connected to an output end of the voltage comparison module;
- and the voltage output module is configured to process the second voltage signal and output a third voltage signal;
- and
- the voltage comparison module comprises a first reference voltage terminal and a second reference voltage terminal;
- the first reference voltage terminal is connected to a first reference voltage, and the second reference voltage terminal is connected to a second reference voltage, so as to output the second voltage signal;
- wherein the voltage comparison module comprises a first operational amplifier and a second operational amplifier;
- an inverting input terminal of the first operational amplifier is configured for connection with the first reference voltage terminal, and a non-inverting input terminal of the second operational amplifier is configured for connection with the second reference voltage terminal;
- a non-inverting input terminal of the first operational amplifier and an inverting input terminal of the second operational amplifier are respectively connected to the output end of the magnetic induction module.
12 more elements
A magnetic-controlled switch circuit, comprising:
- at least one magnetic induction circuit, comprising:
- a magnetic induction module;
- a voltage comparison module;
- and
- a voltage output module;
- and
- a control module;
- wherein the magnetic induction module is configured to sense an external magnetic field and output a first voltage signal;
- an input end of the voltage comparison module is connected to an output end of the magnetic induction module;
- and the voltage comparison module is configured to receive the first voltage signal, and compare the first voltage signal with a reference voltage to output a second voltage signal;
- an input end of the voltage output module is connected to an output end of the voltage comparison module;
- and the voltage output module is configured to process the second voltage signal and output a third voltage signal;
- the voltage comparison module comprises a first reference voltage terminal and a second reference voltage terminal;
- the first reference voltage terminal is connected to a first reference voltage, and the second reference voltage terminal is connected to a second reference voltage, so as to output the second voltage signal;
- the voltage output module comprises at least one voltage output unit;
- an output end of each of the at least one voltage output unit is configured as a first voltage output terminal;
- and the at least one voltage output unit is configured to output the third voltage signal through the first voltage output terminal based on the second voltage signal;
- wherein the control module comprises a reference voltage divider resistor, at least one variable resistor, a voltage input terminal connected to the first voltage output terminal, and a second voltage output terminal;
- the voltage input terminal is connected to the at least one variable resistor and the reference voltage divider resistor in sequence;
- and a first end of the at least one variable resistor is connected to the voltage input terminal, and a second end of the at least one variable resistor is connected to the reference voltage divider resistor and the second voltage output terminal.
17 more elements
Dependencies are inferred from the claim text.