Patent ID: 6553499
Filing Date: 2003-04-22
Classification: G06F

Abstract:
An electronic circuit comprising:a computer; a voltage terminal; an interface terminal, the computer configured to exchange serial data via the interface terminal; a first switch, the first switch being electrically coupled between the computer and the voltage terminal, the first switch being a controllable switch, the first switch having a first gate terminal, the first gate terminal being coupled to the interface terminal, the first gate terminal being connectable via a first resistor to a first potential, the first switch being opened when the first potential is applied to the first gate terminal, the first switch being closed when a second potential is applied to the first gate terminal; and a second switch, the second switch being a controllable switch having a second gate terminal, the first gate terminal being connectable via the second switch to the second potential, a third potential being connectable to the second gate terminal when the first switch is open, the second switch remaining open when the third potential is connected to the second gate terminal.