TY - JOUR
AU - Zonen,
AB - NEW INSTRUMENTS '7' When a pressure of approximately 14 ounces is applied to the operating plunger, the plunger will have been depressed until the forces in the springs upon which the moving contact is mounted will have been altered sufficiently to cause that contact to leave the upper stop suddenly and assume the position shown in the phantom photograph. Sub- sequently, when the pressure acting upon the plunger is relieved, and as soon as it is reduced to approximately ten ounces, the plunger will have risen approximately one thousandth of an inch, and the spring forces will have regained their normalvalues, whereupon the moving contact will leave the lower stop suddenly and make contact with the upper stop. In this way a positive, quick action is obtained in both directions, assuring a Phantom view of micro-switch, showing the snap action both in the making and breaking of electrical circuits. normally closed switch in the operate, or open, . The commercial adaptation of this principle is position made possible largely by the use of beryllium copper for the moving elements which has a high electrical conductivity combined with ability to withstand repeated stresses without fatigue, crystallization, or deformation. The price 
TI - Apparatus for checking current transformers
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/12/5/413
DA - 1935-05-01
UR - https://www.deepdyve.com/lp/iop-publishing/apparatus-for-checking-current-transformers-uP3JMKhn6c
SP - 171
VL - 12
IS - 5
DP - DeepDyve
ER -