ECA 322
ECA 322 1965-JAN-01 Wre-Wound Power-Type Rheostats
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This EIA Standard covers linear-wound variable resistors used as rheostats and as potentiometers (variable voltage-dividers) , having a resistance element of wire, wound on an isulating form shaped in an arc, so that a contact bears uniformly on the resistance element when adjusted by a contact shaft.