Patent ID: 8446179
Filing Date: 2013-05-21
Classification: F02D,H03D

Abstract:
1. A start signal detector circuit comprising a three-terminal element including a first and a second terminal and a control terminal, a resistance value of which changes non-linearly in response to a control voltage or a control current applied to said control terminal, wherein a bias potential is applied to the first terminal and the control terminal of the three-terminal element, and an input signal is applied to the second terminal, wherein any terminal of the first or second three-terminal element forming a part of said start signal detector circuit is supplied with potentials formed at a first and a third node of a bias potential generator circuit comprising a third three-terminal element including a first and a second terminal and a control terminal, the resistance value of which changes non-linearly in response to a control voltage or a control current applied to said control terminal, where the first terminal, the second terminal, and the control terminal are connected to the power supply terminal, the first node, and a second node, respectively, a first resistor is connected between the first node and a ground point, a second resistor is connected between the power supply terminal and the second node, a third resistor is connected between the second node and the third node, and a fourth resistor is connected between the third node and the ground point.