Page 41 Advertisement 1

Radio Record, Volume III, Issue 10, 20 September 1929, Page 41

EVERY AC: SET WILL BE BETTER YET WHEN USING 66 MULLARDS " NlitivfI Mullard THE MASTER VALVE There j 8 Mullard Valve which will improve your AC: Max' anode current, 6.5: MA: This valve- js the Mullard Receiver: Try it ! The new Mullard A.c: Valves have equivalent of the UX226 type of valve; and is generally maintained the same ascendancy which is enjoyed by the used in the radio and first audio stages of all-electric rer Mullard PM: battery valves over ordinary valves;' and; ceivers. Price 15/- being British built, are sturdier and more reliable: The TYPE AC: 4Filament voltage; 5.0 volts; flament cur-' SECRET of the wonderful performance and unexcelled tonal rent, 225 amps.; anode voltage; 100-180 volts; amplifca: quality of these new A.C: valves . lies in the PM: filament tion factor; 3.8;, internal resistance (impedance) ' 1.450 which has made the Mullard _ PM_ valve world-famous. ohms; max: anode current 30 MA: TThis valve i8 the' TYPE 102T (heater 227 type) ~~Filament heater voltage, Mullard equivalent of the UX1ZIA type of valve u( ed 25 volts: filament heater current, 1.5 amps.; anode vol- for last stage speaker; amplification w nere & high an)de tge; 180 volts; amiplification factor; 10; mutual conductance voltage is not in use. These ve! vs arc O} particular valeae (slope), 1.5; internal resistance (impedance) , 6,650 , okms: for use in push-pull stages of amplificatia4 where the con Price 25 / stancy of characteristics greatly facilitates matching of the TYPE AC 3._~Filament voltage 1.5 volts; filament cur- valves used: Price 20/-. rent; 1.1 amps+; anode voltage; 50-150 volts; amplification factor, 10; internal resistance (impedance) , 7,800 ohmo. GET THE MULLARD 28-PAGE BOOKIET_~TREE ON REQUEST Be Fair to your set E FIt MULLARDS" Sole NZ Selling Agents: SPEDDING LTD,, Fort St, Auckland; Dominion Bldgs, . Wellington; P.o: Box 922, Christchurch;' and Po: Box 516, Dunedin; Advt-_The Mullard Wireless Service Cow Ltd;, Balham, London,' England