FREQUENCY-FOLLOWING REFERENCE OSCILLATOR FOR A 2-PHASE LOCK-IN AMPLIFIER

被引：2

作者：

BROWN, BL

机构：

[1] Bell Laboratories, Murray Hill

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1979年 / 50卷 / 05期

关键词：

D O I：

10.1063/1.1135896

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The circuit for a frequency-following oscillator is described for use in obtaining a commensurate reference for a two-phase lock-in amplifier. This device is useful in tracking signals which drift slowly in frequency and which are apt to be either intermittent or momentarily small in amplitude, as in the Brownian motion of a mechanical oscillator. Digital hysteresis is used to reduce the number of tracking corrections made when the signal and the reference oscillator are close in frequency and to increase the number of corrections when they are not.

引用

页码：629 / 631

页数：3

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[4] GRAVITATIONAL RADIATION [J].

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[6]

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[7]

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