DocumentCode :
1347655
Title :
A transistor-oscillator limit switch for indicating and recording instruments
Author :
Wintermute, J. T. ; Hayter, S. G.
Author_Institution :
Westinghouse Electric Corporation, Newark, N. J.
Volume :
79
Issue :
5
fYear :
1960
Firstpage :
518
Lastpage :
519
Abstract :
The continued development of automatic controls has emphasized the need for limit switches on indicating and recording instruments which will not restrict the normal operation of the measuring unit. This control has been obtained in the past in two ways: 1. By contacts carried on the instrument pointer. 2. By employing a vane attached to the pointer to change the constants of a vacuumtube oscillator circuit, and using the change in oscillator current to operate a relay.
Keywords :
Blades; Coils; Instruments; Oscillators; Relays; Switching circuits; Transistors;
fLanguage :
English
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
Publisher :
ieee
ISSN :
0097-2452
Type :
jour
DOI :
10.1109/TCE.1960.6367302
Filename :
6367302
Link To Document :
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