JPH033192U - - Google Patents
Info
- Publication number
- JPH033192U JPH033192U JP6335689U JP6335689U JPH033192U JP H033192 U JPH033192 U JP H033192U JP 6335689 U JP6335689 U JP 6335689U JP 6335689 U JP6335689 U JP 6335689U JP H033192 U JPH033192 U JP H033192U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- voltage
- current
- switching
- 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.)
- Granted
Links
- 238000009499 grossing Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 238000003079 width control Methods 0.000 description 1
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
第1図は本考案の一実施例の構成ブロツク図、
第2図は第1図における定前流回路の動作を説明
するための図、第3図は第1図において、定電流
回路に代えて設けらる電圧検出回路および電流制
御回路の接続図、第4図はその動作を説明するた
めの線図、第5図は突入電流制限機能を備えた従
来の直流電源装置の構成ブロツク図、第6図は第
5図回路の動作を説明するための波形図である。
10……突入電流制限回路、20……メイント
ランス、30……整流平滑回路、40……パルス
幅制御回路、50……整流平滑回路、60……定
電流回路、70……電圧検出回路。
FIG. 1 is a block diagram of an embodiment of the present invention.
2 is a diagram for explaining the operation of the constant forward current circuit in FIG. 1, and FIG. 3 is a connection diagram of a voltage detection circuit and a current control circuit provided in place of the constant current circuit in FIG. Figure 4 is a diagram for explaining its operation, Figure 5 is a block diagram of a conventional DC power supply equipped with an inrush current limiting function, and Figure 6 is a diagram for explaining the operation of the circuit shown in Figure 5. FIG. 10... Inrush current limiting circuit, 20... Main transformer, 30... Rectifying and smoothing circuit, 40... Pulse width control circuit, 50... Rectifying and smoothing circuit, 60... Constant current circuit, 70... Voltage detection circuit.
Claims (1)
をスイツチング素子により/オン/オフしてトラ
ンスの一次巻線に印加すると共に、二次巻線に生
ずる信号を整流平滑して直流電圧を得るスイツチ
ング電源と、 電流制限抵抗とスイツチ素子との並列回路が入
力交流電源からスイツチング電源に至る電流通路
に挿入された突入電流制限回路とを備えた電源装
置において、 トランスに設けた巻線に生ずる出力を整流平滑
する回路と、 この整流平滑回路の出力を定電流
にする定電流回路とを設け、 前記停電流回路からの停電流を前記スイツチ
素子の駆動信号に用いるようにしたことを特徴と
する直流電源の突入電流制限回路。 (2) 入力交流電源を整流平滑し、その直流電圧
をスイツチング素子によりオン/オフしてトラン
スの一次巻線に印加すると共に、二次巻線に生ず
る信号を整流平滑して直流電圧を得るスイツチン
グ電源と、 電流制限抵抗とスイツチ素子との並列回路が入
力交流電源からスイツチング電源に至る電流通路
に挿入された突入電流制限回路とを備えた電源装
置において、 トランスに設けた巻線に生ずる出力を整流平滑
する回路と、 この整流平滑回路の出力電圧が所定の電圧にな
るのを検出する電圧検出回路と、 この電圧検出回路の出力に応じて前記スイツチ
素子に供給する電流を制御する電流制御回路とを
設けた直流電源の突入電流制限回路。[Claims for Utility Model Registration] (1) The input AC power source is rectified and smoothed, and the DC voltage is turned on/off by a switching element and applied to the primary winding of the transformer, and the signal generated in the secondary winding is In a power supply device equipped with a switching power supply that obtains a DC voltage by rectification and smoothing, and an inrush current limiting circuit in which a parallel circuit of a current limiting resistor and a switching element is inserted in a current path leading from an input AC power supply to a switching power supply, a transformer is used. A circuit for rectifying and smoothing the output generated in the winding provided in the circuit, and a constant current circuit for making the output of the rectifying and smoothing circuit a constant current are provided, and the power failure current from the power failure current circuit is used as a drive signal for the switch element. An inrush current limiting circuit for a DC power supply, characterized in that: (2) Switching that rectifies and smoothes the input AC power supply, turns the DC voltage on and off using a switching element, applies it to the primary winding of the transformer, and rectifies and smoothes the signal generated in the secondary winding to obtain the DC voltage. In a power supply device equipped with a power source and an inrush current limiting circuit in which a parallel circuit of a current limiting resistor and a switching element is inserted in a current path leading from an input AC power source to a switching power source, the output generated in the winding of the transformer is a rectifying and smoothing circuit; a voltage detecting circuit that detects when the output voltage of the rectifying and smoothing circuit reaches a predetermined voltage; and a current control circuit that controls the current supplied to the switch element according to the output of the voltage detecting circuit. Inrush current limiting circuit for DC power supply.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6335689U JPH0717273Y2 (en) | 1989-05-31 | 1989-05-31 | Inrush current limiting circuit for DC power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6335689U JPH0717273Y2 (en) | 1989-05-31 | 1989-05-31 | Inrush current limiting circuit for DC power supply |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH033192U true JPH033192U (en) | 1991-01-14 |
JPH0717273Y2 JPH0717273Y2 (en) | 1995-04-19 |
Family
ID=31593326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6335689U Expired - Lifetime JPH0717273Y2 (en) | 1989-05-31 | 1989-05-31 | Inrush current limiting circuit for DC power supply |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0717273Y2 (en) |
-
1989
- 1989-05-31 JP JP6335689U patent/JPH0717273Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0717273Y2 (en) | 1995-04-19 |
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