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GB3551/24A
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H04N5/30—Transforming light or analogous information into electric information
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Abstract
211,161. Dragonetti, G. Feb. 12, 1923, [Convention date]. Selenium cells. - To eliminate inertia effects in a selenium cell D, arranged in circuit with a battery a, a condenser g is inserted between the free end k<1> of one winding d<1> of the cell and the pole of the battery connected to the other winding d<2>. The apparatus utilizing the current varied by the cell is located in the circuit at b.
GB3551/24A1923-02-121924-02-11Improvements in selenium cells without inertia
ExpiredGB211161A
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Protective paste to prevent sulphation of terminals and terminals of electrical devices, such as lead-acid batteries, using sulfuric acid as electrolyte