A Circuit Design to Trace a Resonance Curve on a Cathode Ray Oscillograph Using a Sweep Frequency Oscillator and to Determine Dielectric Constants of Some Standard Liquids

摘要

A sweep frequency oscillator of variable reactance type is designed. Its output is fed to a series tuned circuit and a trace of the resonance curve is taken on a C.R.O. The trace is studied before and after the introduction of a given liquid in the air capacity of the series tuned circuit and hence dielectric constant is calculated.