Sensing type control circuit for electronic apparatus

A sensing type control circuit for an electronic apparatus, comprising:

• an output unit coupled between an external power source and the electronic apparatus, providing varied power supply to the electronic apparatus according to a control signal;
• a switch coupled between the external power source and the output unit, disconnecting or connecting the external power source;
• a control unit, receiving a sensing signal and generating the control signal to the output unit according to the received signal, wherein the control unit comprises:
• a buffering unit for buffering the received signal until a specific time period has been reached and transmitting the control signal to the output unit when the specific time period has been reached, wherein the buffering unit comprises:
• a micro-current source providing a stable micro-current;
• two switches connected in series, wherein one end of the switches connected in series is coupled to the micro-current source and another end is coupled to a ground terminal;
• and
• a capacitor, wherein the control unit controls the switches to charge the capacitor according to the received signal, and the specific time period is a time that the micro-current source has finished charging the capacitor;
• and
• a sensing unit, comprising a sensing device, sensing an external variation, wherein the sensing unit generates the sensing signal to the control unit when the sensing device senses an excitation.