JPH0454489U - - Google Patents
Info
- Publication number
- JPH0454489U JPH0454489U JP9637590U JP9637590U JPH0454489U JP H0454489 U JPH0454489 U JP H0454489U JP 9637590 U JP9637590 U JP 9637590U JP 9637590 U JP9637590 U JP 9637590U JP H0454489 U JPH0454489 U JP H0454489U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- circuit
- voltage
- signal
- frequency
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 5
- 238000009499 grossing Methods 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す構成ブロツク
図、第２図は共振形コンバータの動作説明図、第
３図は第１図の回路の動作を説明する波形図であ
る。第４図は従来装置の構成ブロツク図である。
５０……共振形コンバータ、６０……周波数検
出回路、７０……周波数／電圧変換回路、８０…
…停電検出回路。
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram illustrating the operation of a resonant converter, and FIG. 3 is a waveform diagram illustrating the operation of the circuit shown in FIG. FIG. 4 is a block diagram of a conventional device. 50... Resonant converter, 60... Frequency detection circuit, 70... Frequency/voltage conversion circuit, 80...
...Power failure detection circuit.
Claims (1)
路と、この平滑化された直流電圧が印加される一
次巻線と、この一次巻線に流れる電流をオンオフ
するスイツチング素子と、このオンオフされた信
号が誘起される二次巻線と、この二次巻線に流れ
るスイツチング信号を整流平滑化する出力側整流
平滑化回路と、この出力側平滑化回路の出力する
電圧と所定の基準電圧とを比較して誤差信号を求
める誤差検出回路と、この誤差信号が小さくなる
方向に当該スイツチング素子のスイツチング周波
数を制御する信号を送るスイツチング制御回路と
を有するコンバータ、 前記二次巻線に誘起されるスイツチング信号を
入力して周波数を検出する回路、 この周波数検出回路で検出したスイツチング周
波数に対応する直流電圧を発生する周波数／電圧
変換回路、 この周波数／電圧変換回路で求めた直流電圧と
給電を停止する値を示す基準電圧とを比較して停
電信号を出力する停電検出回路、 を具備することを特徴とするコンバータの入力電
圧監視回路。[Claims for Utility Model Registration] An input-side rectifying and smoothing circuit that rectifies and smoothes alternating current, a primary winding to which this smoothed DC voltage is applied, and switching that turns on and off the current flowing through this primary winding. an element, a secondary winding in which this on/off signal is induced, an output side rectification and smoothing circuit that rectifies and smoothes the switching signal flowing through this secondary winding, and a voltage output from this output side smoothing circuit. and a switching control circuit that sends a signal to control the switching frequency of the switching element in a direction in which the error signal becomes smaller. A circuit that detects the frequency by inputting the switching signal induced in the winding. A frequency/voltage conversion circuit that generates a DC voltage corresponding to the switching frequency detected by this frequency detection circuit. An input voltage monitoring circuit for a converter, comprising: a power failure detection circuit that compares a DC voltage with a reference voltage indicating a value at which power supply is to be stopped and outputs a power failure signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9637590U JPH0454489U (en) | 1990-09-13 | 1990-09-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9637590U JPH0454489U (en) | 1990-09-13 | 1990-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454489U true JPH0454489U (en) | 1992-05-11 |
Family
ID=31835851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9637590U Pending JPH0454489U (en) | 1990-09-13 | 1990-09-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454489U (en) |
-
1990
- 1990-09-13 JP JP9637590U patent/JPH0454489U/ja active Pending
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