Abstract: A power control system for use in an electronic device provided with a transforming module becoming self-contained upon connection with a power supply includes a switch module, a delay module, and a control module. The switch module turns on or off a power input route whereby the transforming module can supply power to the electronic device, and keeps the power input route at an off state while the transforming module remains unconnected to the power supply. The delay module performs a delay process and generates delay signals. The control module receives the delay signals generated and enables the switch module to turn on the power input route. The present invention prevents the stability of the electronic device from being deteriorated as a result of electric sparks induced by metallic friction and excessive instantaneous current while the electronic device is being connected to the power supply.

Abstract: An audio device protection system for use in an electronic device electrically connecting to an audio device is disclosed. The electronic device outputs an audio signal, a power on/off signal, and a trigger signal. The audio device protection system includes a switching unit electrically connected to the audio signal and the audio device and a control unit electrically connected to the trigger signal and the switching unit. The control unit outputs, upon receipt of the trigger signal, a control signal to control electrical connection/disconnection of the audio signal to/from the audio device by the switching unit, thus controlling timing of delivery of the electronic device-outputted audio signal to the audio device during a startup/shutdown procedure of the electronic device. Accordingly, switching on/off a power of the electronic device does not generate audio noise which may otherwise instantaneously trigger or shut down the audio device to the detriment thereof.

Abstract: A power control system for use in an electronic device provided with a transforming module becoming self-contained upon connection with a power supply includes a switch module, a delay module, and a control module. The switch module turns on or off a power input route whereby the transforming module can supply power to the electronic device, and keeps the power input route at an off state while the transforming module remains unconnected to the power supply. The delay module performs a delay process and generates delay signals. The control module receives the delay signals generated and enables the switch module to turn on the power input route. The present invention prevents the stability of the electronic device from being deteriorated as a result of electric sparks induced by metallic friction and excessive instantaneous current while the electronic device is being connected to the power supply.

Abstract: A protection device applicable to an electronic device is disclosed. The electronic device includes an operating unit which outputs an on/off signal when a user turns on/off the electronic device is disclosed. The protection device includes a setting unit for setting a predetermined period, and a processing unit electrically connected to the operating unit and the setting unit. The processing unit outputs a trigger signal to turn on/off the electronic device when receiving an on/off signal provided by the operating unit during the predetermined period, and no longer outputs any trigger signal when receiving the on/off signal again during the predetermined period.