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Thursday, May 30, 2013

Standard Elementary Diagram Symbols - SUPPLEMENTARY CONTACT SYMBOLS &Terms

SPST: Single Pole, Single Throw
SPDT: Single Pole, Double Throw
DPST: Double Pole, Single Throw
DPDT: Double Pole, Double Throw
N.O.: Normally Open
N.C.: Normally Closed
T.O.: Timed Open
T.C.: Timed Closed
PUT: Programmable Unijunction Transistor
SCR: Silicon Controlled Rectifier
Triac: Bidirectional Triode Thyristor
UJT: Unijunction Transistor



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