Page 12 Advertisement 3

Radio Record, Volume I, Issue 37, 30 March 1928, Page 12

99 Igranic SC.C (Choke Capacity) Output Unit Thle USe 0f she Igranic "C.C" Output Unit diverts the steads anode current of the last valve from tlie loud speaker windings, thus protecting the loud speakcer and preventing demagnetisation: It also obviates saturation of the loud speakrer magnets (a frequent cauge of distortion) , and Inalccs possible 4 closer adjustmnent of the diaphragm with consequent increased sensitivity. It also prevents, when used in 9 two-stage low-frcquency amplifer, the comnon tendcncy of the amplifer to produce 2 howl, a5 4 resuit of battery reaction, or to devclop tho trouble knowu a5 Snotor- bikring" when using 2 HT Supply Unib: It j8 enclosed in 2 metal shield, and plainly marked terminals aro provided Ior tho conncction. Price 25 / OBTAINABLE FROM ALL RADIO DEALERS INTERNATIONAL RADIO C0_ LTD. ( ORD BUILDINGS, WELLINGTON.