Electronic micro-controller conversion module for step by step switching apparatus
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United States of America Patent
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Dec 30, 1986
Grant Date -
N/A
app pub date -
Jul 26, 1984
filing date -
Jul 26, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved step-by-step switch assembly includes an electronic controller conversion module. A programmed microprocessor responds to incoming pulse trains of widely variant make and break ratios and generates precisely timed and shaped pulses to operate vertical, rotary and release magnets of the switch assembly. Other features include increased loop sensitivity, selective digit absorption and automatic periodic contact wiping to clean all of the contacts of the assembly.
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