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电子耦合振盪器,为1931年J.B.Dow氏所首创,因其频率稳度甚高,且将振盪器与功率放大器合于一级,电路简便,故为一般业余家所乐用。相沿日久普通之使用电子耦合振盪器者,渐将Dow氏之原来电路,即柯尔华茲电子耦合振盪器电路,演变而为哈特莱电子耦合振盪器电路。甚且有以为原来使频率稳度提高之Dow氏电路,即为哈特莱电子耦合振盪器电路。然据作者经验,此种电路之频率稳定并不甚高。本文目的在研究,(1)何以柯尔华茲
The electronically coupled oscillator, first pioneered by J.B. Dow in 1931, has been used by most amateur homes because of its high frequency stability, combined with an oscillator and power amplifier at one stage, and a simple circuit. With the general use of electronically coupled oscillator, gradually Dow’s original circuit, that is, the Fairchild electronically coupled oscillator circuit, evolved to Hartley electronic coupling oscillator circuit. There is also thought that the original Dow normalized frequency circuit, that is, Hartley electronic coupling oscillator circuit. However, according to the author’s experience, the frequency of such circuits is not very stable. The purpose of this article is to study (1) why should Colts