Western Electric 377A Plug
Dummy plug consisting of a miniature stem and bulb with interior welded leads for shorting out pins.
Used in N1 carrier repeaters, when located in central offices, to replace the 427A cold-cathode voltage regulator tube. The shorted leads maintained continuity of the powering path to other tubes in the repeater.
2099 units were produced in 1974.
Hauteur • Height • Höhe : 41 mm • 1" 5/8
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