公开(公告)号：US3826993A

公开(公告)日：1974-07-30

申请号：US7346170

申请日：1970-09-18

Applicant: BRAFTON CORP

Inventor： WHITE R

IPC: B01D51/08 ,  B06B1/02 ,  H03L7/00 ,  H03B3/04

CPC classification number: H03L7/00 ,  B01D49/006 ,  B01D51/08 ,  B06B1/0261 ,  B06B2201/53 ,  B06B2201/70

Abstract: Method and apparatus for initiating and sustaining oscillations in a system having a free oscillatory period, comprising an oscillating means (preferably including a relaxation oscillator of the resistor-capacitor type) connected to apply a periodic driving force to the system, the oscillating means having an intrinsic period approximately equal to the period of the system, a detector connected to sense operation of the oscillating means and the oscillations, if any, of the system and to detect a phase difference therebetween, and circuitry with an input connected to the detector, the circuitry connected to the oscillating means to be effective to modify the oscillations of the oscillating means so as to maintain the phase difference within predetermined limits.

Abstract translation: 用于在具有自由振荡周期的系统中启动和维持振荡的方法和装置，包括连接以向系统施加周期性驱动力的振荡装置（优选地包括电阻器 - 电容器类型的张弛振荡器），振荡装置具有 固有周期大约等于系统的周期，连接到感测振荡装置的操作的检测器和系统的振荡（如果有的话），并检测它们之间的相位差，以及具有连接到检测器的输入的电路， 连接到振荡装置的电路有效地修改振荡装置的振荡，以便将相位差保持在预定限度内。