Patent ID: 8188760
Filing Date: 2012-05-29
Classification: G01R

Abstract:
1. A curve tracer signal conversion device, the signal conversion device comprising: an input connected to a curve tracer base (B) port to accept a repeating sequence of stepped base signals, a signal input connected to a curve tracer port selected from a group consisting of the collector and emitter ports, and a plurality of signal outputs, where each signal output is sequentially connected to the selected curve tracer port in response to a corresponding base step signal; a high pass filter having an input connected to the curve tracer base port, and an output to supply a filtered sequence of stepped base signals; a reset module having an input connected to the high pass filter output to accept the filtered repeating sequence of stepped base signals, and an output to supply a reset trigger following each sequence; a selector module having an input connected to the high pass filter output to accept the filtered repeating sequence of stepped base signals, and an output to supply a sequence of selection signals in response to the corresponding sequence of stepped base signals; and, a counter having a reset input to accept the reset trigger and a clock input to accept the selection signal, the counter having a plurality of parallel outputs, where each output is enabled in sequence in response to the corresponding sequence of selection signals, and where the sequence of outputs is reset to an initial output in response to the reset trigger.