Method and apparatus for low cost current and voltage sensing in circuits as a function of a voltage drop

摘要

Method and apparatus to sense current and voltage in circuits as a function of a voltage drop. In one aspect of the invention, a sense circuit (147) includes a series combination of a diode (157) and a resistor (155) in the path of the current to be sensed, the voltage across this series combination coupled to drive a light emitting diode (LED) (159). <IMAGE>