Improved "A" Battery

Radio Record, Volume IV, Issue 41, 24 April 1931, Page 14

Improved "A" Battery

Developed in’ America. RECENT development ‘of "peramount importance to listeners in areas not supplied with’ electricity, has been the perfecting’ of anew type of » onn. he ey TP ee a ee tend semuimt

ro. oe bes se ee ne AY (or filament’ batters havy ing a phenomenally long li Along with it has also developed a new series of valves, of the 230-1-2 > type, designed for operation with this battery. Both were evolved with the object of making’. it possible for set manufacturers to market a new and improved type of. battery receiver which would bring to unwired homes a quality of reception hitherto possible only -with ‘a.c. receivers, but which would not require a storage battery and would be free from the weaknesses and limitations which. characterised the battery set. The Air Cell "A" Battery is a high capacity, ‘constant’ voltage, ‘air depolarised primary battery which, when used with one ’,15 ‘amp.’:and five 06 amp. valves, gives under normal condi. tions an operating | life of 1000 hours. Owing. to ‘the unusually -constan voltage, rheostats are dispensed with. A more complete description of this new cell will appear next week, é