Title :
Phase-Shift Oscillators
Author :
Ginzton, E.L. ; Hollingsworth, L.M.
Author_Institution :
Stanford University, Calif.
Abstract :
This paper describes a type of resistance-capacitance-tuned oscillator which operates with a single tube. A three- or more mesh phase-shifting network is connected between the output and input of an amplifier tube. When the gain of the amplifier is adjusted either manually or by an automatic-volume-control circuit barely to maintain oscillation, almost pure sine-wave output is obtained. Variations in the basic circuit have been analyzed and design formulas are included in this paper. Experimental work verified theoretical expectations. A typical oscillator was found to have a distortion of 0.1 per cent at an output voltage of 20 volts.
Keywords :
Bridge circuits; Circuit analysis; Circuit optimization; Communication industry; Feedback circuits; Frequency; Laboratories; Negative feedback; RLC circuits; Voltage-controlled oscillators;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1941.233978
