JPS5878798U

JPS5878798U - reference oscillator

Info

Publication number: JPS5878798U
Application number: JP17287681U
Authority: JP
Inventors: 北原　桐和; 清水　弘紀
Original assignee: 神鋼電機株式会社
Priority date: 1981-11-20
Filing date: 1981-11-20
Publication date: 1983-05-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はこの考案による基準発振器の回路構成例を示す
図、第２図は第１図に示す基準発振器を他励式インバー
タ装置の制御回路に適用した時の回路構成例を示すブロ
ック図、第３図は同実施例を説明するための波形図であ
る。Ａ・・・・・・比較回路（比較手段）、Ｂ・・・・・・
カウント回路（アップ・ダウンカウント手段）、Ｃ・・
・・・・周波数間引き回路（周波数間引き手段）、１３
・・・・・・周波数アップ用発振回路（周波数変更手段
）、１５・・・・・・周波数ダウン用発振回路（周波数
変更手段）、２０・・・・・・インバータ（禁止手段）
、２３・・・・・・電圧／周波数コンバータ（信号変換
手段）。FIG. 1 is a diagram showing an example of the circuit configuration of a reference oscillator according to this invention, and FIG. 2 is a block diagram showing an example of the circuit configuration when the reference oscillator shown in FIG. 1 is applied to a control circuit of a separately excited inverter device. FIG. 3 is a waveform diagram for explaining the same embodiment. A... Comparison circuit (comparison means), B...
Count circuit (up/down count means), C...
...Frequency thinning circuit (frequency thinning means), 13
...Oscillator circuit for frequency increase (frequency change means), 15 ...Oscillator circuit for frequency reduction (frequency change means), 20 ...Inverter (inhibition means)
, 23... Voltage/frequency converter (signal conversion means).

Claims

[Scope of utility model registration request]

The data comparing means compares the set frequency data supplied from the frequency setting means and the frequency data supplied from the up/down counting means, and based on the comparison result, the frequency changing means changes the frequency of the up/down counting means. In the reference oscillator, the frequency reduction means reduces the frequency of the signal supplied from the reference frequency signal generation means and outputs the same based on the frequency data obtained by the up/down count means. signal converting means for converting the voltage signal into a corresponding frequency signal; and inhibiting means for prohibiting the frequency changing operation of the frequency changing means when the frequency changing command signal is supplied, and the chest wave number changing command signal is When supplied, the prohibiting means prohibits the frequency changing operation of the frequency changing means, and in this state, the signal converting means converts the supplied voltage signal into a corresponding frequency signal, and the amplifier frequency down-counting means A reference oscillator, characterized in that the reference oscillator is configured to supply a reference oscillator to a reference oscillator and change the frequency data.