Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1988-11-21
1989-10-31
Shoop, Jr., William M.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361 56, 361119, H02H 322
Patent
active
048781452
ABSTRACT:
A surge/transient protector for an N-line data cable (e.g., N=16) or other group of N data lines having two data conductors and a return conductor for each line includes individual conductor segments for each data line conductor; conventional multi-pin connectors are used to connect the protector in series in the lines. The protector has a positive bus, a negative bus, and a ground bus; each data conductor segment is coupled by a pair of oppositely polarized diodes to the positive and negative buses, and each return conductor is coupled to the reference bus by two oppositely connected diodes. Two large capacity energy storage devices (e.g. 10,000 microfarad capacitors) are connected between the reference bus and the positive and negative buses, each paralleled by a Zener diode to establish a discharging threshold just slightly greater than one-half the voltage range for the data lines. There are also N gas tubes, each connected between two data conductor segments and ground, and N supplemental energy storage devices, which may be metal oxide varistors functioning as large, threshold-limited capacitors; all of the protector apparatus, including a power supply, is mounted in one compact housing, with the two large-capacity energy storage devices serving all of the data lines.
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Oneac Corporation
Shoop Jr. William M.
Wysocki A. Jonathan
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