JPH0222091U - - Google Patents
Info
- Publication number
- JPH0222091U JPH0222091U JP9892188U JP9892188U JPH0222091U JP H0222091 U JPH0222091 U JP H0222091U JP 9892188 U JP9892188 U JP 9892188U JP 9892188 U JP9892188 U JP 9892188U JP H0222091 U JPH0222091 U JP H0222091U
- Authority
- JP
- Japan
- Prior art keywords
- input
- voltage
- level
- detection signal
- input voltage
- 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 7
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Rectifiers (AREA)
Description
第１図は本考案の実施例に係わる直流電源装置
を示すブロツク図、第２図は第１図を詳しく示す
回路図、第３図は従来の直流電源装置を示すブロ
ツク図である。
１，２……入力端子、３……整流回路、４，５
……出力端子、６，７……コンデンサ、８……ス
イツチ、９……入力電圧検出回路、１２……制御
回路、１３……ラツチ回路。
FIG. 1 is a block diagram showing a DC power supply according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing FIG. 1 in detail, and FIG. 3 is a block diagram showing a conventional DC power supply. 1, 2... Input terminal, 3... Rectifier circuit, 4, 5
... Output terminal, 6, 7 ... Capacitor, 8 ... Switch, 9 ... Input voltage detection circuit, 12 ... Control circuit, 13 ... Latch circuit.
Claims (1)
交流入力電圧とが択一的に入力される可能性のあ
る入力端子と、 整流素子とコンデンサと倍電圧又は多倍電圧回
路を選択的に形成するためのスイツチとを有し、
前記入力端子に前記第１のレベルの交流入力電圧
と前記第２のレベルの交流入力電圧とのいずれが
入力してもほぼ同一レベルの所定直流出力電圧を
得ることができるように構成されている整流回路
と、 前記入力端子に結合され、前記入力端子に前記
第１又は第２のレベルの交流入力電圧のいずれが
入力しているかを示す第１又は第２の検出信号を
出力する入力電圧検出回路と、 前記入力電圧検出回路に結合され、前記第１の
検出信号に基づいて前記第１のレベルの入力電圧
を前記所定直流出力電圧に変換し、前記第２の検
出信号に基づいて前記第２のレベルの入力電圧を
前記所定直流出力電圧に変換するように前記スイ
ツチを制御すると共に、前記第２の検出信号が発
生した時には前記入力端子の電圧が零又は零近傍
になるまで前記第２の検出信号による制御状態を
維持するように構成されている制御回路と を備えていることを特徴とする直流電源装置。[Claims for Utility Model Registration] An input terminal to which a first level AC input voltage and a second level AC input voltage may be input alternatively, a rectifying element, a capacitor, and a voltage doubler or and a switch for selectively forming a multiplier voltage circuit,
It is configured such that a predetermined DC output voltage of substantially the same level can be obtained regardless of whether the AC input voltage at the first level or the AC input voltage at the second level is input to the input terminal. a rectifier circuit; and an input voltage detector coupled to the input terminal and outputting a first or second detection signal indicating whether the AC input voltage of the first or second level is input to the input terminal. a circuit coupled to the input voltage detection circuit for converting the first level input voltage to the predetermined DC output voltage based on the first detection signal; The switch is controlled to convert the input voltage at the second level into the predetermined DC output voltage, and when the second detection signal is generated, the second detection signal is controlled until the voltage at the input terminal becomes zero or near zero. A control circuit configured to maintain a control state based on a detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9892188U JPH0222091U (en) | 1988-07-25 | 1988-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9892188U JPH0222091U (en) | 1988-07-25 | 1988-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0222091U true JPH0222091U (en) | 1990-02-14 |
Family
ID=31325611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9892188U Pending JPH0222091U (en) | 1988-07-25 | 1988-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222091U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284071A (en) * | 1988-09-16 | 1990-03-26 | Yutaka Denki Seisakusho:Kk | Dc power device |
| JPH04124890U (en) * | 1991-04-30 | 1992-11-13 | 新電元工業株式会社 | power circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117538A (en) * | 1980-02-20 | 1981-09-16 | Hitachi Ltd | Automatic switching power source circuit |
| JPS5746675A (en) * | 1980-09-01 | 1982-03-17 | Tdk Corp | Power circuit |
-
1988
- 1988-07-25 JP JP9892188U patent/JPH0222091U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117538A (en) * | 1980-02-20 | 1981-09-16 | Hitachi Ltd | Automatic switching power source circuit |
| JPS5746675A (en) * | 1980-09-01 | 1982-03-17 | Tdk Corp | Power circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0284071A (en) * | 1988-09-16 | 1990-03-26 | Yutaka Denki Seisakusho:Kk | Dc power device |
| JPH04124890U (en) * | 1991-04-30 | 1992-11-13 | 新電元工業株式会社 | power circuit |
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