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A dc conductance bridge for laboratory use is described which embodies a combination of features not found in any other bridge. The range of measurement extends from 10-15 mho to 1 mho, and the minimum detectable change in conductance is 4X10-16 mho. Bridge voltages of 6, 45, and 135 volts may be applied. Since the highest resistance arm is only 107 ohms, the time constant of the bridge is small and...
The stabilization of chlorinated capacitor impregnants by chemical additives has been practiced by a number of capacitor manufacturers for several years. Anthraquinone has been the most widely used stabilizer, and has been added to chlorinated diphenyl and chlorinated naphthalene to the extent of 0.5 to 1.0% by weight. The purpose of stabilization is to increase the d.c. life and to avoid undesirable...
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