THE PREPARATION OF CARBON RESIN FILMS FOR PRINTED WIRING RESISTORS
TELECOMMUNICATIONS RESEARCH ESTABLISHMENT MALVERN (UNITED KINGDOM)
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Resistor varnish formulations and methods of production and application are discussed. Oil-based resins require more apparatus and more effort in preparation than oil-free resins. Apparatus for spraying volatile liquids is cumbersome and complex, but reproducible results are obtainable. Printing machines provide comparatively simple and clean operation.
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