. The Bell System technical journal . he card, before the tensionwould be transferred statically from the contact to the card. Thus thedynamic contact closure points agree with the static gauging, and differfrom the dynamic opening point by the amount of contact follow. Good ELECTRONIC RELAY TESTER 937 correlation is obtained between the static and dynamic gauge measure-ments if make contacts are gauged on operate and break contacts onrelease. OTHER RELAY CHARACTERISTICS Switches are provided to permit other relay charcateristics to be ob-served on the scope such as armature motion, contact ch
. The Bell System technical journal . he card, before the tensionwould be transferred statically from the contact to the card. Thus thedynamic contact closure points agree with the static gauging, and differfrom the dynamic opening point by the amount of contact follow. Good ELECTRONIC RELAY TESTER 937 correlation is obtained between the static and dynamic gauge measure-ments if make contacts are gauged on operate and break contacts onrelease. OTHER RELAY CHARACTERISTICS Switches are provided to permit other relay charcateristics to be ob-served on the scope such as armature motion, contact chatter, and thecontact operate and release times. The contact gauging is obtained withthe horizontal plates connected to the electrostatic gauge. With thissetting, the time for a dot to move across the screen may be less than3 milliseconds (depending on the armature transit time) and contactchatter may be observed during this time. With a time base sweep on the horizontal plates, the armature motion -H65V 119E oJ REPEATER «=5 COIL -^. l<y 04 10- n. 2? °3 R3 2° 3^ * * » \AA; t * \
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
