JPH0488489U - - Google Patents

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Publication number
JPH0488489U
JPH0488489U JP40336490U JP40336490U JPH0488489U JP H0488489 U JPH0488489 U JP H0488489U JP 40336490 U JP40336490 U JP 40336490U JP 40336490 U JP40336490 U JP 40336490U JP H0488489 U JPH0488489 U JP H0488489U
Authority
JP
Japan
Prior art keywords
motor
circuit
output
speed
converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP40336490U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP40336490U priority Critical patent/JPH0488489U/ja
Publication of JPH0488489U publication Critical patent/JPH0488489U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の実施例を示すブロツク図、第
2図は本考案の主要部分の回路動作波形図、第3
図は従来例を示すブロツク図である。 1……交流電源、2……整流平滑回路、3……
スイツチングトランス、4……スイツチング素子
、5……モータ、6……F/V(周波数/電圧)
変換器、7……基準電圧、8……誤差増幅器、9
……可変デユーテイ・レシオ形パルス発生器、1
0……DC―DCコンバータ、13……CR積分
回路、14……基準電圧、15……比較器。
Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a circuit operation waveform diagram of the main part of the invention, and Fig. 3 is a block diagram showing an embodiment of the present invention.
The figure is a block diagram showing a conventional example. 1... AC power supply, 2... Rectifier smoothing circuit, 3...
Switching transformer, 4...Switching element, 5...Motor, 6...F/V (frequency/voltage)
Converter, 7... Reference voltage, 8... Error amplifier, 9
...Variable duty ratio pulse generator, 1
0...DC-DC converter, 13...CR integration circuit, 14...Reference voltage, 15...Comparator.

Claims (1)

【実用新案登録請求の範囲】 (1) 整流回路と、この整流回路により整流平滑
された直流電源をトランスを介してスイツチング
素子でPWM制御するDC―DCコンバータと、
このDC―DCコンバータの出力で駆動されるモ
ータと、このモータの速度検出器で検出した出力
を前記DC―DCコンバータに入力してPWM制
御する速度制御回路と、前記速度検出器からの出
力信号を受けて速度状態に応じた電圧レベルを出
力するCR積分回路と前記CR積分回路の出力と
基準電圧を比較して速度状態を検出する比較器よ
りなる速度状態検出回路を備えたモータ駆動用ス
イツチング電源。 (2) 前記モータは駆動回路を内蔵したDCブラ
シレスモータであることを特徴とする請求項1記
載のモータ駆動用スイツチング電源。 (3) 前記モータからの速度信号はモータのコミ
ユテータセンサー出力を速度信号とすることを特
徴とする請求項1記載のモータ駆動用スイツチン
グ電源。
[Claims for Utility Model Registration] (1) A rectifier circuit, and a DC-DC converter that performs PWM control on a DC power source rectified and smoothed by the rectification circuit using a switching element via a transformer;
A motor driven by the output of the DC-DC converter, a speed control circuit that inputs the output detected by the speed detector of the motor to the DC-DC converter for PWM control, and an output signal from the speed detector. A motor drive switching device comprising a speed state detection circuit comprising a CR integrating circuit which outputs a voltage level according to the speed state based on the received voltage, and a comparator which detects the speed state by comparing the output of the CR integrating circuit with a reference voltage. power supply. (2) The switching power supply for driving a motor according to claim 1, wherein the motor is a DC brushless motor having a built-in driving circuit. (3) The switching power supply for driving a motor according to claim 1, wherein the speed signal from the motor is an output from a commutator sensor of the motor.
JP40336490U 1990-12-13 1990-12-13 Pending JPH0488489U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP40336490U JPH0488489U (en) 1990-12-13 1990-12-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP40336490U JPH0488489U (en) 1990-12-13 1990-12-13

Publications (1)

Publication Number Publication Date
JPH0488489U true JPH0488489U (en) 1992-07-31

Family

ID=31881153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP40336490U Pending JPH0488489U (en) 1990-12-13 1990-12-13

Country Status (1)

Country Link
JP (1) JPH0488489U (en)

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