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Wireless World Radio Valve Data

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Wireless World Radio Valve Data This document was generated by me, Colin Hinson, from a document held at R.A.F. Henlow Signals Museum and is believed to be out of copyright or Crown Copyright . It is presented here (for free) under the Open Government Licence (O.G.L.) if under Crown Copyright and this version of the document is my copyright (along with the Crown Copyright) in much the same way as a photograph would be. If you believe the document to be under copyright, please contact me. The document should have been downloaded from my website https://blunham.com/Radar, if you downloaded it from elsewhere, please let me know (particularly if you were charged for it). You can contact me via my Genuki email page: https://www.genuki.org.uk/big/eng/YKS/various?recipient=colin You may not copy the file for onward transmission of the data nor attempt to make monetary gain by the use of these files. If you want someone else to have a copy of the file, point them at the website. It should be noted that most of the pages are identifiable as having been processed my me. _______________________________________ I put a lot of time into producing these files which is why you are met with the above when you open the file. In order to generate this file, I need to: 1. Scan the pages (Epson 15000 A3 scanner) 2. Split the photographs out from the text only pages 3. Run my own software to split double pages and remove any edge marks such as punch holes 4. Run my own software to clean up the pages 5. Run my own software to set the pages to a given size and align the text correctly. 6. Run Omnipage (Ulitimate) on all the pages to OCR them. 7. Generate a searchable Acrobat pdf file. Hopefully after all that, I end up with a presentable file, though I can’t guarantee there aren’t errors in the OCR. If you find missing pages, pages in the wrong order, anything else wrong with the file or simply want to make a comment, please drop me a line (see above). It is my hope that you find the file of use to you personally – I know that I would have liked to have found some of these files years ago – they would have saved me a lot of time ! Colin Hinson In the village of Blunham, Bedfordshire. RADIO VALVE DATA Characteristics of 3,000 Valves, Transistors, Rectifiers and Cathode-Ray Tubes Compiled by the stuff of ' WIRELESS WORLD' First published February, 1949 Sixth Edition (:), Ilitre & Sons Ltd. 1958 A ' Wireless World' Book LONDON ILIFFE & SONS LTD iert;;;"&' Valve Abbreviations EXPLANATION OF THE TABLES CONTENTS a—a Anode-to-anode BT Beam tetrode PAGE 3 THE INFORMATION GIVEN refers to the main electrical OUTPUT VALVES 1 Explanation of the Tables Ca k Anode-cathode capacitance Grid-anode capacitance characteristics of valves together with their base con- Triodes, beam tetrodes and pentodes are all included cgc, nections. Physical dimensions are not included since Tables of Valve Characteristics : c Grid-cathode capacitance here with normal maximum operating conditions as Distortion there is a limit to the amount of information which it is output valves for single-valve Class A operation for a.f. :51 practicable to give and size is only occasionally an Frequency-changers . 7 DD Double-diode application. They are distinguished by the letters (T), 14 Double-beam tetrode important factor in the choice of a valve. (BT) and (P) following the type number and those Screened Tetrodes and Pentodes DBT The valves are classified under main headings accord- 24 DP Double-pentode containing diodes have additionally (SD) or (DD) for Output Valves 1 ing to their type. In each section they are divided Output Valves 2 34 DT Double-triode single- or double-diode. 39 FW Full-wave according to their make and then sub-divided into A few contain the elements of an h.t. rectifier in Output Valves 3 obsolete, replacement and current types. The tables are Thermionic Diodes 41 g—g Grid-to-grid addition and these are distinguished by the letter R. 43 Conversion conductance largely self-explanatory, but the following notes should In some cases the conditions for a tetrode or pentode Semiconductor Diodes gic be read carefully if they are to be fully understood. Point Contact Transistors 46 gin Mutual conductance operating as a triode with screen-grid joined to anode 46 HW Half-wave Litifitations of space necessarily restrict the amount are given also. This condition can be distinguished by Symmetrical Transistors of infOrmation which can be included in these tables, so Junction Transistors 46 H Heptode the absence of a figure for screen voltage, but in addition 48 H„, Hexode designers requiring more detailed information should (T) is placed after the type number to indicate that the Amplifier 'Triodes consult the valve manufacturers' published literature. Small Transmitting Valves 57 Ik Cathode current conditions are those of a triode. The fact that the Valve Rectifiers 58 MV Mercury vapour electrode structure is that of a tetrode or a pentode is Metal Rectifiers 65 O Octode FREQUENCY-CHANGERS obvious as the valve appears in another row followed by (BT) or (P). E.H.T. Rectifiers 69 P Pentode Valves in this section are intended primarily for use as Cathode-ray Tuning Indicators - 71 Pa Anode dissipation frequency-changers in superheterodynes and the figures Even under Class A conditions the anode and screen Barretters 73 PI Peak inverse given are the normal operating conditions for this currents rise with the signal input to a small extent. Voltage Stabilizers 73 R Rectifier The anode current with full drive is about 2 per cent application. Some of the valves included are occasion- greater than the quiescent value. With some valves the Thyratrons 75 ra Anode a.c. resistance ally used for other purposes, however, and the voltages Television Cathode-ray Tubes 77 Rh Cathode bias resistance and currents may then be very different. Even in their screen current increases much more and may become as Oscilloscope Cathode-ray Tubes 80 R, Optimum load resistance normal application differences may be found in individual high as three or four times the quiescent value. This Efficiency Diodes 85 SD Single diode Increase is usually greatest when the valve is of a type receivers, since not all designers adopt the " normal " drawing a very low quiescent current. SE Secondary emission conditions ; this is particularly the case when the oper- Explanation of Valve-base Connections 87 SQ Special Quality ation is on short-wave bands. Since there is no standard method Of rating valves, the figures quoted in the tables are sometimes for the T Triode It is to be noted that some valves which do not include 88 TD Triple diode no-signal condition and sometLacs for full drive. It is Valve Base Diagrams an oscillator section, and which thus apparently require believed that most of the figures for British valves are TH Triode heptode a separate oscillator, can actually be used as complete TI-4 Triode hexode for no-signal, whereas most of those for American types Trade Names and Manufacturers' Addresses 108 frequency-changers by using an oscillator circuit coupled are for maximum applied signal. TP Triode pentode between cathode and another electrode. The operation TT Tetrode The matter is mentioned chiefly to explain small Index, Base Connections and Valve Equivalents 109 of such valves is likely to be more critically dependent differences which may exist between the figures given VD Voltage-doubler on the oscillator circuit design than that of types ha\ ing VM Variable mu here and those which may be found in other lists. The separate oscillator sections. differences are, in practice, unimportant for they are less than the normal variations between individual specimens SCREENED TETRODES AND PENTODES of the same type. Transistor Abbreviations The main application of valves in this section is to Because of the rising current with drive there is a slight difference in the output powers obtainable with dissipation at 25°C r.f. and i.f. amplification and the operating conditions P, Collector are normal ratings for this condition. No distinction is fixed grid bias on the one hand and self-bias by a cathode V, Collector volts resistor on the other. Figures for battery-type valves Collector current made between tetrodes and pentodes because it is im- Ie material in most cases, which type a valve is as long are invariably for the fixed bias condition. For other GENERAL ABBREVIATIONS le Emitter current valves there may be some discrepancies since again there =rb Base resistance as its characteristics are otherwise suitable. It is only rb in special applications, where separate use is made of the seems to be no standard procedure for indicating output. Used in Valve Data Tables re—re Emitter resistance The difference is not large, however, and can be ignored Collector resistance suppressor grid, that it is important and then the re normal characteristics are in any case insufficient to for most purposes. In general, the output with cathode * appended to filament or heater voltage indicates re' Collector resistance (common emitter coii-' bias is up to 10 per cent less than with fixed bias. nection) enable a choice of valve to be made. Except where the a directly heated cathode (that is, filament). Valves suppressor grid (g3) is internally connected, it is possible The maximum resistance which may safely be included without the asterisk have indirectly heated cathodes. 1-,,, Mutual resistance in the grid-to-cathode external circuit depends on the Current gain (common emitter connection) - to determine whether a valve is a tetrode or a pentode oc.' by reference to the valve-base connections.
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