Aviation Electronics

Details of Electrical and Electronic Apparatus with Applications in the Maintenance and Operation of Aircraft, Missiles and Space Vehicles. The bi‐directional counter Type DBC4 is the latest instrument to be developed in the Advance Controls Ltd. range of industrial electronic counters. Two basic types of the instrument are currently available—the first type employing Dekatron count and read‐out circuits, and the second type which utilizes Dekatron counting circuits with Digitron type numerical display. A third instrument, to be released shortly, will comprise solid state counting circuits and Digitron type numerical read‐out and will extend the frequency range up to between 50 and 100 kc/s.