JPH02114387U - - Google Patents

Info

Publication number
JPH02114387U
JPH02114387U JP2136489U JP2136489U JPH02114387U JP H02114387 U JPH02114387 U JP H02114387U JP 2136489 U JP2136489 U JP 2136489U JP 2136489 U JP2136489 U JP 2136489U JP H02114387 U JPH02114387 U JP H02114387U
Authority
JP
Japan
Prior art keywords
voltage
capacitor
converter transformer
winding
rectifier circuit
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
JP2136489U
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 JP2136489U priority Critical patent/JPH02114387U/ja
Publication of JPH02114387U publication Critical patent/JPH02114387U/ja
Pending legal-status Critical Current

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Landscapes

  • Television Receiver Circuits (AREA)
  • Dc-Dc Converters (AREA)

Description

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

第1図は本考案に係るスイツチングレギユレー
タの一実施例を示す回路図、第2図は従来のスイ
ツチングレギユレータを示す回路図である。 2……マイコン、3……コントロール回路、8
……コンバータトランス、C1……コンデンサ、
D11……ダイオード、Tr3,Tr4……トラ
ンジスタ、L11……入力巻線、L12,L14
……帰還用巻線、L13,L15……出力巻線。
FIG. 1 is a circuit diagram showing an embodiment of a switching regulator according to the present invention, and FIG. 2 is a circuit diagram showing a conventional switching regulator. 2... Microcomputer, 3... Control circuit, 8
...Converter transformer, C1... Capacitor,
D11...Diode, Tr3, Tr4...Transistor, L11...Input winding, L12, L14
...Feedback winding, L13, L15...Output winding.

Claims (1)

【実用新案登録請求の範囲】 入力巻線に供給される直流電圧をスイツチング
トランジスタにてオン、オフし、出力巻線に接続
した第1の整流回路から安定化直流電圧を得るコ
ンバータトランスと、 このコンバータトランスに設けられる帰還用巻
線であつて、両端に得られる電圧をダイオードと
コンデンサから成る第2の整流回路にて整流し、
前記コンバータトランスの出力電圧に比例した電
圧を前記コンデンサの両端に得るようにした第1
の帰還用巻線と、 一端が前記第1の帰還用巻線に接続し、他端が
スイツチ回路及びダイオードを介して前記第2の
整流回路の前記コンデンサに接続した第2の帰還
用巻線と、 電気機器の待機時、動作時に応じた制御信号を
発生するマイコンを有し、その制御信号に基づい
て待機時は前記スイツチ回路をオンし、動作時は
前記スイツチ回路をオフにする第1の制御手段と
、 前記第2の整流回路のコンデンサ両端電圧と基
準電圧との誤差電圧に基づいて、前記スイツチン
グトランジスタのオン期間を制御する第2の制御
手段と、 前記コンバータトランスの出力巻線に設けて、
待機時、動作時にかかわらず前記マイコンに電源
を安定に供給する手段とを具備したことを特徴と
するスイツチングレギユレータ。
[Claims for Utility Model Registration] A converter transformer that turns on and off a DC voltage supplied to an input winding using a switching transistor and obtains a stabilized DC voltage from a first rectifier circuit connected to an output winding; This is a feedback winding provided in this converter transformer, and the voltage obtained at both ends is rectified by a second rectifier circuit consisting of a diode and a capacitor.
A first device configured to obtain a voltage across the capacitor that is proportional to the output voltage of the converter transformer.
a second feedback winding, one end of which is connected to the first feedback winding, and the other end of which is connected to the capacitor of the second rectifier circuit via a switch circuit and a diode. and a first microcomputer that generates a control signal depending on when the electrical equipment is on standby or when it is in operation, and turns on the switch circuit during standby and turns off the switch circuit when it is in operation based on the control signal. a second control means for controlling the on period of the switching transistor based on the error voltage between the voltage across the capacitor of the second rectifier circuit and the reference voltage; and an output winding of the converter transformer. Provided in
A switching regulator comprising means for stably supplying power to the microcomputer regardless of whether it is on standby or in operation.
JP2136489U 1989-02-28 1989-02-28 Pending JPH02114387U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2136489U JPH02114387U (en) 1989-02-28 1989-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2136489U JPH02114387U (en) 1989-02-28 1989-02-28

Publications (1)

Publication Number Publication Date
JPH02114387U true JPH02114387U (en) 1990-09-13

Family

ID=31238542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2136489U Pending JPH02114387U (en) 1989-02-28 1989-02-28

Country Status (1)

Country Link
JP (1) JPH02114387U (en)

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