Abstract: An input device and an electronic device are provided. The input device includes one or more force-receiving portions configured to receive an external force applied by an operation object. The input device also includes a moving portion corresponding to each force-receiving portion and configured to move in response to the external force received on a corresponding force-receiving portion satisfying a first condition. In addition, the input device includes a trigger portion corresponding to each moving portion and configured to generate an input signal after a motion of a corresponding moving portion satisfies a second condition. Further, the input device includes one or more radiation portions configured to transmit or receive a wireless signal.

Abstract: An input device and an electronic device are provided. The input device includes one or more force-receiving portions configured to receive an external force applied by an operation object. The input device also includes a moving portion corresponding to each force-receiving portion and configured to move in response to the external force received on a corresponding force-receiving portion satisfying a first condition. In addition, the input device includes a trigger portion corresponding to each moving portion and configured to generate an input signal after a motion of a corresponding moving portion satisfies a second condition. Further, the input device includes one or more radiation portions configured to transmit or receive a wireless signal.

Abstract: The present invention discloses a class D amplifier chip with duty ratio limiting functions and the device thereof, a class D amplifier chip includes triangle wave modules, PWM modulation modules, duty ratio detection modules and logic control modules, the input differential audio signals and triangle wave signals generated by the triangle wave module are converted into low voltage pulsed PWM signals through the PWM modulation module, then gets driving processed and generates high voltage pulses; the duty ratio detection module real-time detects the duty ratio of PWM signals, when the logic control module decides the duty ratio of the PWM signals is larger than the preset maximum value, the PWM module is controlled to stop working, equals to close the audio output of the class D amplifier device; which limits the amplitude of the output audio signals, avoids burning the speaker due to an overlarge amplitude.

Abstract: The present invention discloses a class D amplifier chip with duty ratio limiting functions and the device thereof, a class D amplifier chip includes triangle wave modules, PWM modulation modules, duty ratio detection modules and logic control modules, the input differential audio signals and triangle wave signals generated by the triangle wave module are converted into low voltage pulsed PWM signals through the PWM modulation module, then gets driving processed and generates high voltage pulses; the duty ratio detection module real-time detects the duty ratio of PWM signals, when the logic control module decides the duty ratio of the PWM signals is larger than the preset maximum value, the PWM module is controlled to stop working, equals to close the audio output of the class D amplifier device; which limits the amplitude of the output audio signals, avoids burning the speaker due to an overlarge amplitude.