THE CROSS-OVER DETECTOR,

Abstract

This report describes the development of a low hysteresis zero cross-over detector. The device consists essentially of: (1) a tunnel diode detector stage; (2) an isolation stage; (3) an oscillation-suppressor stage; and (4) a Schmitt trigger stage. The last three stages use only transistors operated as shock-wave amplifiers to maintain sharp leading edges. The output voltage is a 12-volt square wave with a rise time of 60 nano seconds. The maximum lag in cross-over position of the output is estimated to be smaller than 100 nano seconds. The tunnel diode detector clips signals with amplitudes smaller than 1 millivolt in a frequency band between 0 and 100 KC. The complete circuit operates over a frequency band from 10 cps to 60 KC. Photographs of waveforms at various points in the circuit are included. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1964
Accession Number
AD0454792

Entities

People

  • Mahmoud A. Melehy

Organizations

  • General Dynamics Electric Boat

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Detectors
  • Diodes
  • Doppler Effect
  • Frequency
  • Frequency Bands
  • Frequency Shift
  • Leading Edges
  • Photographs
  • Shock Waves
  • Square Waves
  • Tunnel Diodes
  • Waveforms
  • Waves

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Electrical Engineering