Lacquer-Coated Resistors
L. F. Curtiss · Review of Scientific Instruments · 1933
A compact form of resistor of high resistance, consisting of graphite on Pyrex, sealed in glyptal lacquer, which has been found very satisfactory is described. Resistors of this type with a resistance of 108 to 1012 ohms may be made with comparative ease. They are not appreciably affected by changes of temperature or of humidity. Their small size renders them useful where economy of space is essential.