. The Bell System technical journal . ises from thesubscribers circuits. In Fig. 6 is shown an electrolytic condenser of the type designedfor direct-current filter service. When prepared for operation on24-volt circuits, the capacity of this cell is nominally 1,000 1,000 cycles, and for 48 volts is about 600 mf. at the same cell is 8 inches wide, inches long and inches high(20 X 26 X 36 cm.). Completely assembled it weighs about 42 pounds(19 kg.), including 22 pounds (10 kg.) of electrolyte. The container for the condenser is made of heat-resisting glasswhi
. The Bell System technical journal . ises from thesubscribers circuits. In Fig. 6 is shown an electrolytic condenser of the type designedfor direct-current filter service. When prepared for operation on24-volt circuits, the capacity of this cell is nominally 1,000 1,000 cycles, and for 48 volts is about 600 mf. at the same cell is 8 inches wide, inches long and inches high(20 X 26 X 36 cm.). Completely assembled it weighs about 42 pounds(19 kg.), including 22 pounds (10 kg.) of electrolyte. The container for the condenser is made of heat-resisting glasswhich reduces possible breakage due to temperature variations. Theelectrodes, both of aluminum, are rigid and are bolted to a porcelaincover to keep them in proper space relation. Two supporting bolts. THE ALUMINUM ELECTROLYTIC CONDENSER 51 one from each electrode properly marked with respect to polarity,extend through the cover to provide the terminals for the thin layer of high grade parafhne oil is used on top of the con-. FiG. 6—Aluminum electrolytic condenser, designed for direct-current filter service denser fluid to prevent evaporation and to keep the inside of the cellfrom sweating under varying room temperature conditions. Thecover is sealed to the glass jar with paraffine to provide additionalprotection against evaporation and to prevent dirt from getting intothe cell. 52 BELL SYSTEM TECHNICAL JOURNAL The Anode Construction and Material The construction of the electrodes is shown in Fig. 7. The positiveelectrode on which the dielectric film is formed is made of four corru-gated aluminum plates, each supported by four integral ears. In anassembled condenser the positive plate surfaces are entirely immersedin electrolyte, the ears extending up through the oil and providingcontact with the positive terminal.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
