Page 21 Advertisement 1

Radio Record, Volume III, Issue 10, 20 September 1929, Page 21

ELECTRIC RADIOS In building your Electric Radio, You mu8t remember that 2 breakdown even Of 8 single part may have very serious conge- quences_ For this reason, greater care in choice of parts must be exercised than formerly You ghould gend ommediately for Ou1 large illustrated catalogue_ which describes an endless range of apparatus chogen for it8 effictency and reliability_ We cordially invite inquiries for ' 'items not ugually ligted by u8, since we will alwayg endeavour either to obtain it for You even if it mean8 manufacturing it: Qur fictory i8 well equipped with modern machines_ and can turn 'out a gurprisingly large varlety of: epparatus. Transformers and Chokes: These are the heart of the AC; Radio. We ~are making the "Record" Transtormer with an output of 250 volts 50 mils 'O2 the high_ tension side with three filament windingg 5 volts 1 amp, 2.5 yolts 5 crysGi 1.6 volts 5 amp. Fully enclosed in enamelled oase, and covered by a tee. 230 volts, 50 cycles 837167| Price Any Size Power Trangformer, Output Trangformer, Choke; etc:, can be made to order: Quotationg on receipt of full par- ticulars. Emmco Pugh-pull Transformers, for am- pllfcation are large oversized trangform erg, ensuring best tonal qualities 83 nput: Price Ferranti and other makes 0f 'Transformers supplied Rectifiers:: Undoubtedly the best Rectifier Is the Westinghouge, and though its price may seem high; It must be remembered_ that it ever requires renewal; and can pe uged with a much gimpler transformer: The TITI Westinghouse gives 100 mils at 200 rolts and the price hag heen reduced from 86/10/ to 84/10/- It: is fully de gcribed in 2 Webtinghouge Bookrlet, which will be posted on receipt of 3d, in stamps_ New Westinghouge rectifiers include 2 120- volt 20 mil price 27/6 and 180-volt 30 mnl_ price 48/- but thege will not; be available in New Zealand for some weekg yet: For Low voltage Rectification-as in Bat- tery Chargers; ~A" Miminators; Dynamic Speaker we 'can supply 6-volt %2 amp at Reft,dena 6-volt 1 amp at 52/6 both in Ga Ses_ Rectiflerg, not in cages, cobt 28/ for 9 volts 1 amp, and 48/: for 9 volte 2 amn. Both' are availahle immediately_ The Raytheon, 125 mil bulb_ costs 25 and the Radiotron 280 30/-. A holder for either of these valves: holding them very securely, can be supplied at 11[- each_ Condensers: There is mo need here to 'enlarge on the reliability of Hydra Condensers-_it is un- questioned-but attention js: drawn to the following: price redncbiona 'The voltage given is the test voltage, and' the working voltage must not exceed half these algureg_ Group 1 Group 2 Group 3 Group 4 m;fz- 500-V, 750.V. 1000-V; 'RoO-v. a; 8. a. 8. d: 4. 8 8 6 3 0 3 6 7 8 0 3 4 6 0 0 8 3 8 S 6 8 # 8 4 8 8 8 6 25 '0 4. 10 15 0 40 0 Bufrer Condenger Hydra: Consists of two 1 m,f_ condensers 1000-volt_ AC 6/: test in one case: Elmiinator Condenser Block;; Four 1 m f two 2: m;f:, and one 8 m.f: Condensers in one compact unit. 16 m.f. total Yon can huy this unit with every conf- 36/ dence. Price Hydra Condensers Invariably Reliable: COILS _The Well-Mayda patent Space Wound Cotla can be supplied either in Hammarlund-Roberts or Rrowninr-Drake in complete set of two coils: 34/6 Price English Bakelite Cotl Formb na Bages, 6-pin, are now in 'gtock again. RESISTANCES _We can 'supply a full range of Variable Resistances; including Royalty at 6/0, Royalty Heavy Duty 10/6, @mmcostadg 7/6, and Ularostate at 12/6.