Judge — March 31, 1923 — page 33: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

This, howe means only tha facturing interest only WD-11 ¢ or amplification. One of its peculiarities not light up brightly, dull red heat which is hardly perc in daylight. temperature will have di destroy. it, as accidents. as is the degree of h WD-11 tube in a receiver. quired. The life of the three months in ordinary serv “Don’t be alarmed, old man. supposed by many to indicate amplifi not the case. a slight change, of manu- has been made in the design of the original tube, and any n be used for either detection is that it does s a standard tube does, but its filament glows only with a i To burn it at a_ higher -overed on their first attempt to use it; but if care is taken, a life of at least 1,000 hours can be expected of it, barring The reason why it can operate at so low a temperature is that its filament (which is of platinum and not of tungsten ase With the standard tube) is coated with certain oxides which give off a copious supply of electrons at a low A dry-cell ‘should be used for each Thus, for two stages of amplification, three cells connected together in parallel are re- . Special batteries, consisting of three extra large cells mounted together as a unit, can be are not only more convenient but have a longer life than the ordinary cells. A six volt storage battery can be used for operating WD-11 tubes if its cells are connected in parallel so as to give two volts instead of si When recharging is necessary (which should be done every two or three months for the good of the battery even if its charge is not exhausted) its cells should be reconnected in. series if a standard six volt charger is used. The technical details of this tube are follows: rated filament current, 14 pere at 1.1 volts; B or plate voltage volts for detection, and from forty. to one hundred volts for amplification; plate impedance, approximately 20,000 id leak, titable grid Connect ohms; resistance of suitable two megohms; capacity of condenser, .00025 microfarac telephone re the plate for highest efficiency vacuum is very high, or, in other words, the WD-11 is a very “hard” tube and will stand any voltage that will not cause electrolysis of the glass between the leading-in wires. For signals of normal strength, no grid bias is necessary for amplification; but with very loud signals, & obtained for three or four dollars, and | You see, we’re running on a budget system, and I’m merely keeping the family Easter clothing bills within the allowance.” 31 Digestible Solvent fruit, such as fi Brainy Diet S BRAIN & NERVES Th and consumption. (3) Correct liver and kidney troubles: (3) Dissolve (5) Dissolve t to the skin, as ac NOTABLE RESULTS: Following are instances of direct success among headaches. purities which cause blemishes zema, Age 61. Right ars; restored in thre 65, b dd Ser sation restored in three days. Could walk two miles daily after six weeks. ARTHRITIS. Ail joints swollen with lime de. posits. Knees and wrists locked immovable for cight months. Blind for two years. Can now sec, S. age 40. weighing about thirty pounds dissolved within a ye GOITR) Collar reduced 17 to I IRRHAGE, years in. rolling chair; k from charges..| Now “does housework, including washing. ECZEMA. — Age 69. Eyebrows lost. Skin 8c Normal in three "months. Pus ceased on 7th Age 65. With last two chil wollen feet nor consti y painless. es yield within a 3000 pupils. Edu Age 30. red no hau: previously IPATION week. Sworn statements. cational book 10 cents. BRINKLER SCHOOL OF EATING Dept. 16 131 West 72nd Strest New York 95. sp enicto aS Brand new — double safety bivostee bought before recent tariff raise and offered at special prices for a I ie lar $22.00, 25-calibre.7-shot ic, 41-4 in. long, our No.25C 110, Or regular $25.00 heavy ser- Secaliore, Wehor automatic: 62. long, No. 250120, special at $9.75- Both sites shoot all standard cartridges. EXTRA MAGAZINE FREE. Rush your order in today and get extra magazine given free with first 600 orders. AY POSTMAN ON DELIVERY plus postage. ied. CONSUMERS CO., Dent.2sC, 326 | What Would YOU Like to Study? We Teach You and Give You A YEAR TO PAY ‘ " pproval. | You AR and posta ‘Business ‘Administration. Postal will bring either course—your first C.O. D. pay- ment $1.00 and pos returnable if not satisfied. WALHAMORE INSTITUTE Dept. E, Lafayette Building, Philadel; idea anendet The Finest bicyclo ever ism, Federal Ip, OMece Management, ae you a WSR Quality factory pris me low prices. Write Company Writes, Prater Mead G-174 ompany CeTeage Eertitlen INVENTORS our guide book, “HOW TO Send model or sketch and description and we will give our opnled of its H RANDO! VACUUM TUBE’ PA The Set you always Wanted, FREE A real RADIO Concer FARUS Hs ae Who desire to secure atents should wri YOUR you HOW you { TUBE RADIC ABSOLUTELY: 7 rite today RADIO PLAN Dept. 919 Duane St, New York comicbooks.com