A CURRENT-TO-FREQUENCY CONVERTER FOR ASTRONOMICAL PHOTOMETRY

被引：13

作者：

TAYLOR, DJ

机构：

[1] Steward Observatory, University of Arizona, Tucson

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1969年 / 40卷 / 04期

关键词：

D O I：

10.1063/1.1684005

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A simple current-to-frequency converter has been developed which works directly with photomultiplier currents. It has full scale input current ranges of 3×10-10 to 3×10-6 A. The feedback pulse is a square pulse that is clocked on and off by a continuously running oscillator. Drift in the oscillator frequency is compensated if the oscillator also serves as the time base of the counter used to count the pulses. With oscillator frequencies up to and including 20 kHz the linearity is 0.01% or better and the drift less than 0.01% of full scale per hour. © 1969 The American Institute of Physics.

引用

页码：559 / &