Solar Manufacturing Corporation CB Analyzer
Capacitor Analyzer


During the past few years the performance requirements of radio receivers have been reaching high levels which can only be maintained by the use of high quality component parts. These parts, especially condensers and resistors, must have satisfactory electrical characteristics to perform their designated functions properly, if satisfactory results are to be obtained from receivers. Condensers have a detrimental effect on reception, long before they become permanently defective. The problem of determining the quality or operating efficiency of a condenser requires a complete measurement of its capacity, leakage-resistance and power factor. Motor starting A.C. electrolytic condensers used in connection with fractional horse power motors present a somewhat similar service problem. The Solar Capacitor Analyzers meet the requirements of radio service men and engineers for inexpensive instruments which will accurately determine the important electrical characteristics of all types of electrolytic, paper, mica, trimmer and air condensers. Condensers may be tested for capacity, leakage, opens, shorts, intermittent operation and power factor. Accurately calibrated markings on several color-coded scales are provided for convenient measurement of capacity and resistance. These tests are made on a Wien Bridge with five direct reading ranges on the Model CB and six ranges on the CC. The power factor of electrolytic condensers can be read directly from a scale which is calibrated zero to 50% power factor. The capacity range of the Model CB is from .00001 mfd. to 70 mfd., and the resistance range is from 50 ohms to 2,000,000 ohms. On the Model CC an extra capacity scale up to 800 mfd. is included which permits testing of motor starting condensers for capacity and power factor. The advantages of a bridge for capacity and resistance measurements are well known. Some of these advantages include independence of reading from line voltage variations, and high degree of accuracy. The use of a bridge circuit in an inexpensive instrument of this type has been made possible by the unusual detector arrangement employed. This detector arrangement consists of a highly sensitive 6E5 cathode ray tube connected across the output of the bridge. The leakage test part of the equipment consists of a D.C. Power supply and a Neon lamp. A switch is provided with voltage settings covering practically all electrolytic and paper condensers which may be encountered in the field. For leakage test of paper condensers, this device is particularly useful because of its high sensitivity. In many places in the radio receiver, such as for the gridplate coupling condenser, the insulation resistance is of considerable importance, and the sensitivity of this device is entirely adequate for that purpose. The instrument will be found useful as well for tests of insulating material. Certain electrolytic condensers end their useful life by losing capacity or by developing a high resistance contact at the anode tab, due to corrosion. These defects will not show up on a direct leakage test, but may be unerringly detected by capacity and power factor tests as provided for in this test instrument. The instruction card furnished with this instrument and the instructions to follow, specify certain limits which have been set in connection with the leakage and capacity measurements to be used as a guide in judging satisfactory condensers. These limits have been chosen arbitrarily on the basis of our experience with condensers made for use in radio receivers, and, in general, condensers which meet these requirements will be found satisfactory in operation, while those rejected will interfere with satisfactory operation.


Service- und Bedienungsanleitung
Service- und Bedienungsanleitung
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15 November 2015


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