JPH01162733U - - Google Patents
Info
- Publication number
- JPH01162733U JPH01162733U JP5930988U JP5930988U JPH01162733U JP H01162733 U JPH01162733 U JP H01162733U JP 5930988 U JP5930988 U JP 5930988U JP 5930988 U JP5930988 U JP 5930988U JP H01162733 U JPH01162733 U JP H01162733U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- supply circuit
- current
- load
- 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 8
- 238000010586 diagram Methods 0.000 description 4
Description
第１図、第３図及び第４図は、この考案を適用
して構成した電源回路の第１、第２及び第３実施
例の全体回路図、第２図は、第１、第２及び第３
実施例の動作の流れを示すフローチヤート図、第
５図は第５実施例の全体回路図、第６図は第５図
の回路の部分的改良を示している図である。
２……ＣＰＵ、３……比較器、４……ＬＥＤ、
５……ＯＲゲート、ＴＲ１〜ＴＲ５……トランジ
スタ、Ｒ１〜Ｒ９……抵抗器。
1, 3, and 4 are overall circuit diagrams of the first, second, and third embodiments of the power supply circuit constructed by applying this invention, and FIG. 2 is the overall circuit diagram of the first, second, and Third
FIG. 5 is a flowchart showing the flow of operation of the embodiment, FIG. 5 is an overall circuit diagram of the fifth embodiment, and FIG. 6 is a diagram showing a partial improvement of the circuit of FIG. 5. 2...CPU, 3...Comparator, 4...LED,
5...OR gate, TR1 to TR5 ...transistor, R1 to R9 ...resistor.
Claims (1)
流電源からなる駆動源と、負荷である電子楽器と
の間に設けられていて、過電流から上記駆動源を
保護するための電源回路において、 主給電回路に直列に設けられていて、該主給電
回路を開閉する回路開閉手段と、 この回路開閉手段に直列に設けられていて、負
荷に流入する電流が予め決められたレベルを越え
たが否かを検出する電流レベル検出手段と、 この電流レベル検出手段による検出結果に基づ
いて上記回路開閉手段を制御する制御手段と を具備してなる電源回路。 (2) 交流電源を直流電源に変換する手段又は直
流電源からなる駆動源と、負荷である電子楽器と
の間に設けられていて、過電流から上記駆動源を
保護するための電源回路において、 主給電回路に直列に設けられていて、該主給電
回路を開閉する回路開閉手段と、 この回路開閉手段に直列に設けられていて、入
力電圧の低下又は負荷に流入する電流の増加に起
因した出力電圧の低下が予め決められたレベルに
至つたか否かを検出する電圧レベル検出手段と、 この電圧レベル検出手段による検出結果に基づ
いて上記回路開閉手段を制御する制御手段と、 を具備してなる電源回路。 (3) 交流電源を直流電源に交換する手段又は直
流電源からなる駆動源と、負荷である電子楽器と
の間に設けられていて、過電流から上記駆動源を
保護するための電源回路において、 主給電回路に直列に設けられていて、負荷に流
入する電流の大きさを検出する電流量検出手段と
、 この電流量検出手段により検出された電流の大
きさが所定のレベルに達したときに一致信号を発
生するレベル判定手段と、 このレベル判定手段からの一致信号に応動して
警告を発する警告手段と を具備してなる電源回路。 (4) 交流電源を直流電源に変換する手段又は直
流電源からなる駆動源と、負荷である電子楽器と
の間に設けられていて、過電流から上記駆動源を
保護するための電源回路において、 主給電回路に直列に設けられていて、制御端子
を有し、該制御端子に入力される制御信号に従つ
てその内部抵抗が変えられる被制御素子手段と、 この被制御素子手段に直列に設けられていて、
それ自体を流れる電流量から、負荷に流入する電
流の大きさを予め決められたレベル以下に制限す
る制御信号を上記被制御素子手段の制御端子に付
与する制御信号発生手段と を具備してなる電源回路。[Claims for Utility Model Registration] (1) A means for converting AC power into DC power or a drive source consisting of a DC power supply and an electronic musical instrument as a load, which In a power supply circuit for protection, a circuit opening/closing means is provided in series with the main power feeding circuit and opens/closes the main power feeding circuit, and a circuit opening/closing means is provided in series with the circuit opening/closing means so that the current flowing into the load is A power supply circuit comprising: current level detection means for detecting whether or not the current level has exceeded a predetermined level; and control means for controlling the circuit opening/closing means based on the detection result by the current level detection means. (2) In a power supply circuit provided between a means for converting an alternating current power source into a direct current power source or a drive source consisting of a direct current power source and an electronic musical instrument as a load, and for protecting said drive source from overcurrent, A circuit opening/closing means provided in series with the main power supply circuit to open and close the main power supply circuit; A voltage level detection means for detecting whether or not a decrease in the output voltage has reached a predetermined level; and a control means for controlling the circuit opening/closing means based on the detection result by the voltage level detection means. power supply circuit. (3) In a power supply circuit provided between a means for exchanging an alternating current power supply to a direct current power supply or a drive source consisting of a direct current power supply and an electronic musical instrument as a load and for protecting said drive source from overcurrent, A current amount detection means is provided in series with the main power supply circuit and detects the magnitude of the current flowing into the load, and when the magnitude of the current detected by the current amount detection means reaches a predetermined level. A power supply circuit comprising: a level determining means for generating a coincidence signal; and a warning means for issuing a warning in response to the coincidence signal from the level determining means. (4) In a power supply circuit that is provided between a means for converting an alternating current power source into a direct current power source or a drive source consisting of a direct current power source and an electronic musical instrument as a load and protects the drive source from overcurrent, controlled element means, which is provided in series with the main power supply circuit, has a control terminal, and whose internal resistance is changed according to a control signal input to the control terminal; I was being treated,
and control signal generating means for applying a control signal to the control terminal of the controlled element means to limit the magnitude of the current flowing into the load from the amount of current flowing through the controlled element means to a predetermined level or less. power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5930988U JPH01162733U (en) | 1988-05-06 | 1988-05-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5930988U JPH01162733U (en) | 1988-05-06 | 1988-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01162733U true JPH01162733U (en) | 1989-11-13 |
Family
ID=31285085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5930988U Pending JPH01162733U (en) | 1988-05-06 | 1988-05-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01162733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03127445U (en) * | 1990-04-05 | 1991-12-20 |
-
1988
- 1988-05-06 JP JP5930988U patent/JPH01162733U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03127445U (en) * | 1990-04-05 | 1991-12-20 |
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