Vol. 15, No. 6

Volume 15, Number 6

The Philips (Mullard, Amperex) E1T electronic decade counter tube, registered with EIA as the 6370 in 1956. “The applied electrical pulses deflect a ribbon-shaped focused electron beam to one of ten stable positions, producing a light spot on a fluorescent sccreen markedd with figures 0-9.” Drawing: J. Haantjes and H. Carter, Classificationof Electron Tubes (New York, Macmillan, 1962.

In this issue
  • Matching Tubes for Audio Service
  • Early Manufacturing View of Metal Tubes
  • American Electro Metal Co. and Philips Elmet Corporation
  • Weird Tube of the Month: Secondary-Emission Tubes
  • Possibilities of the Pentode
  • Receiving Tubes Standardized
  • 1953 View of Special-Purpose Tubes
  • Electronic Enterprises. Inc.
  • Speaks on Vacuum Tubes
  • The Day Before Christmas

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