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: De Muiderkring
: International Electronic Tube Handbook
: De Muiderkring
: 1955
: 338
: 96

INTRODUCTION The data contained in this book have been arranged in such a way that everybody dealing in practice with electronic tubes or valves may readily find all necessary particulars of any type. The book covers the principal data of a large number of European and American types of receiver and amplifier tubes as well as on cathode ray tubes for TV-sets and oscilloscopes, arranged in such a manner that all relevant characteristic data and electrode con nections of a given tube can be read off immediately This has been achieved by the insertion of a circuit diagram for each tube type, giving clearly indicated, currents and voltages, the figures printed near the electrodes corresponding with those of the base diagram, which is shown as well Moreover, the diagrams have been so designed that it can be ascertained at a glance for which application the tube in question is intended In addition to the characteristic data mentioned above, at the end of each section various operation details are tabulated for a number of tubes especially eligible for use as RC-coupled amplifiers. Each section furthermore comprises a table of tube types either completely identical or otherwise only differing in filament voltage or filament current, or having a different base. At the end of the book (page 301) is a comparative table of tube designations used by military authorities. Finally, a table is included giving data on thyratrons, cathode ray tubes and a number of current crystal diodes and transistors. The various types of tubes are arranged under 8 main headings, marked in the book with a coloured band, as follows:
I (Orange) Diodes (rectifiers and detectors)
II (Green) Triodes (comprising double triodes and (double) diode-triodes.
III (Yellow) Tetrodes and pentodes (comprising (double) diode pentodes)
IV (Red) Output Tubes (triodes, tetrodes, pentodes)
V (Grey) Frequency Converters (so-called mixer tubes, such as hexodes, heptodes, octodes, whether or not combined with oscillator triode)
VI (Blue) Combination Tubes (triode-pentodes, etc; triode-heptodes, in as far as suitable for a.f., i.f. and r.f. applications)
VII (White) Thyratrons (gas-filled triodes and tetrodes) Cristal diodes and Transistors
VIII (Purple) Cathode Ray Tubes (Indicator tubes and picture tubes for TV and oscilloscope)...


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