Patent ID: 7573316
Filing Date: 2009-08-11
Classification: H03K

Abstract:
1. A control apparatus, comprising: a voltage source; a controlling unit, coupled to the voltage source for receiving an input signal and generating an output signal wherein the controlling unit comprises: a first resistor, a first terminal of the first resistor coupled to the voltage source; a first transistor, a drain of the first transistor coupled to a second terminal of the first resistor and a gate of the first transistor coupled to the voltage source; a second transistor, a drain of the second transistor coupled to a source of the first transistor, a source of the second transistor coupled to a drain of a third transistor and a gate of the second transistor for receiving the input signal; and a first output terminal, coupled between the first resistor and the drain of the first transistor for generating the output signal; and an enabling unit, coupled to the voltage source, the controlling unit and a ground terminal for controlling whether or not the controlling unit generates the output signal according to an enabling signal, wherein the enabling unit comprises: