Patent ID: 6366437
Filing Date: 2002-04-02
Classification: G05B,H02H

Abstract:
An electrical network comprising:(a) a first conductor of electrical current, said first conductor including a resistance to a flow of said current; (b) a second conductor conducting electrical current in response to a voltage differential between said first and said second conductor; (c) a first transistor connected to vary an impedance of said first conductor in response to a voltage at a gate of said first transistor, said gate conductively connected to said second conductor; (d) a second transistor having a first and a second connection to said first conductor and a third connection to said gate of said first transistor; said second transistor varying said voltage at said gate of said first transistor in response to a voltage differential between said first and said second connections of said second transistor to said first conductor; and (e) a device emitting a signal in response to said voltage at said gate of said first transistor.