Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1995-01-06
1997-05-13
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324763, G01R 104
Patent
active
056296177
ABSTRACT:
An analog electronic test probe includes hundreds of inputs each connected to two amplifiers, each in a separate multiplexer stage on an integrated circuit. A programmer, responsive to a dial, shifts data through a shift register of latches each of which is connected to one of the amplifiers, activating the amplifier(s) connected to the selected input, thereby multiplexing it (them) to selected output(s). Similarly, the gain for each output may be selected. An outdisable circuit connected to the outputs of each multiplexer and the outputs of each IC chip causes each output to appear electrically as an open circuit when no input associated with the multiplexer or chip is selected. This permits any number of multiplexers and IC chips to be daisy-chained together.
REFERENCES:
patent: 5103557 (1992-04-01), Leedy
patent: 5418470 (1995-05-01), Dagostino et al.
Hewlett Packard; Oscilloscope Probes and Accessories; Technical Data; cover page, p. 17, and Index.
Dascher David J.
Griggs Keith C.
Rush Kenneth
Uhling Thomas F.
Bowser Barry C.
Hewlett--Packard Company
Wieder Kenneth A.
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