PARALLEL L-C TUNED CIRCUIT EMPLOYING A LIGHT-VARIABLE CAPACITOR.

Abstract

A modified Schering bridge circuit was used to measure the resistance and capacitance of a metal-oxidesemiconductor capacitor (MOSC) illuminated by a 500 watt tungsten-filament lamp. An increase in capacitance ranged from 55% at .6 mc to 4% at 40 mc with light, and the quality factor ranged from a peak of 65 at 12 mc with no light to a peak of 6.5 at 30 mc with light. For small frequency variations around the peak values of Q the MOSC had constant characteristics and could be used as a light tunable capacitor in a parallel L-C circuit. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1965
Accession Number
AD0623101

Entities

People

  • Joseph Charles Wheeler

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Capacitance
  • Capacitors
  • Circuits
  • Frequency
  • Lc Circuits
  • Peak Values
  • Resonant Circuits
  • Resonant Frequency
  • Tuned Circuits
  • Variable Capacitors

Readers

  • Electrical Engineering
  • Electronics Engineering
  • Spectroscopy.