Wireless-World-1956
ANITA RI" 1956 TWO S1111,I.I Wireless World evmon *:::: 1'/;'-- --\\" x\ \\ //it 1 1 1,L.,*"'--.: I 1I Pr; '11,1.1111111 1 1 ifilifi( 1 1g i I j i (1 t11.4.\-.'''''''liiiij1)r ( \ \\ \s:ss..**::://I1/If 1 -..:: 1\\ \\ \ \ --**://'//// 4/ .,,//do, .... , "ilk ...., .., ........ .....- 7 .. ........ --:::0.,/ ........., ............ --.......0"0.,/"" V( .....,,................. ..... ,.....4. Arr ... ,,,,,.....- ..-..., ....-...-......, ..... / ' - "-----........./ Ni.' (-------------.....-----..... ..... ,...._ -,_._ ......- PIT ACATION 11 WIRELESS WORLD JANUARY. 1956 STANDARD E D I SWAN METAL -GLASS SEALS 1-0-t 0-005 3 4 Ediswan, who have specialized for many years in the production of hermetic seals, offer a wide range of Standard Metal -Glass Seals of first-class quality. Two main types-multiple and single-are available. Both are equally efficient, the type selected depending on the particular application. These seals are easy tofit(usually soft soldering).They have high insulation resistance and provide vacuum -tight joints 45 which will withstand all normal variations in pressure and temperature. Experience has proved that these standard seals meet the majority of requirements, but our Engineers will be pleased to discuss applications outside the scope of this range. I N FORMATIVE CATALOGUE AVAILABLE ON REQUEST THE EDISON SWAN ELECTRIC Co. Ltd., 155 Charing Cross Road, London, W.C.2 and Branches MG.to6 Telephone: Gerrard 8660 Member of the A.E.I. Group of Companies Telegrams: Ediswan, Westcent, London 1 110. iss97 TiliniliaazMTN ELECTRONICS, RADIO, TELEVISION Managing Editor: HUGH S. POCOCK, M.I.E.E. Editor: H. F. SMITH JANUARY 1956 Assistant Editor:F. L. DEVEREUX, B.SC. Editorial Comment 1 Further Notes on the Sensitive In This Issue Three -Valve T.R.F.
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