JPH03124218U - - Google Patents
Info
- Publication number
- JPH03124218U JPH03124218U JP3396590U JP3396590U JPH03124218U JP H03124218 U JPH03124218 U JP H03124218U JP 3396590 U JP3396590 U JP 3396590U JP 3396590 U JP3396590 U JP 3396590U JP H03124218 U JPH03124218 U JP H03124218U
- Authority
- JP
- Japan
- Prior art keywords
- potential
- control terminal
- electronic device
- circuit
- operating state
- 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
- 208000032368 Device malfunction Diseases 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Control Of Voltage And Current In General (AREA)
- Dc-Dc Converters (AREA)
Description
第1図は本考案の動作状態制御回路の実施例を
電子装置の例としてのスイツチング電源装置内に
組み込んだ状態で示す回路図である。図において
、
1……スイツチングトランジスタ、2……変圧
器、2a……変圧器の一次コイル、2b……変圧
器の二次コイル、3……整流ダイオード、4……
平滑化用キヤパシタ、5……電圧分割回路、5a
,5b……抵抗、10……動作発停回路、11,
12……コンパレータ、13……オアゲート、1
4……給電回路、20……電位賦与手段、30…
…電位保持回路、31……ツエナダイオード、3
2……トランジスタ、40……PWM回路、41
……誤差増幅器、42……参照波発生回路、43
……PWMコンパレータ、43a……インバータ
、50……指令回路、51,52……ダーリント
ントランジスタ、60……集積回路装置、61…
…起動スイツチ、62……ソフトスタート設定用
キヤパシタ、63……誤差増幅器の帰還用外付け
キヤパシタ、64……参照波発生回路用外付けキ
ヤパシタ、E……接地電位、e1……電位範囲設
定用第1の電位、e2……電位範囲設定用第2の
電位、e3……電位保持回路の制限電位、e4…
…PWMコンパレータ用最大デユーテイ比設定電
位、e5……誤差信号用限界値、er……出力電
圧設定用基準値、Sa……出力電圧の実際値、S
e……誤差信号、Ss……開閉指令、St……P
WMコンパレータ用参照波、Tc……制御端子、
v……制御端子電位、Vc……集積回路装置用電
源電圧、Vi……スイツチング電源部への入力電
圧、Vo……スイツチング電源部の出力電圧、で
ある。
FIG. 1 is a circuit diagram showing an embodiment of the operating state control circuit of the present invention installed in a switching power supply device as an example of an electronic device. In the figure, 1... Switching transistor, 2... Transformer, 2a... Primary coil of transformer, 2b... Secondary coil of transformer, 3... Rectifier diode, 4...
Smoothing capacitor, 5...Voltage division circuit, 5a
,5b...Resistor, 10...Operation start/stop circuit, 11,
12...Comparator, 13...Or gate, 1
4...Power supply circuit, 20...Potential imparting means, 30...
... Potential holding circuit, 31 ... Zener diode, 3
2...Transistor, 40...PWM circuit, 41
...Error amplifier, 42...Reference wave generation circuit, 43
... PWM comparator, 43a ... Inverter, 50 ... Command circuit, 51, 52 ... Darlington transistor, 60 ... Integrated circuit device, 61 ...
... Start switch, 62 ... Capacitor for soft start setting, 63 ... External capacitor for error amplifier feedback, 64 ... External capacitor for reference wave generation circuit, E ... Ground potential, e1 ... For setting potential range First potential, e2...Second potential for potential range setting, e3...Limiting potential of the potential holding circuit, e4...
... Maximum duty ratio setting potential for PWM comparator, e5 ... Limit value for error signal, er ... Reference value for output voltage setting, Sa ... Actual value of output voltage, S
e...Error signal, Ss...Opening/closing command, St...P
Reference wave for WM comparator, Tc...control terminal,
v...control terminal potential, Vc...power supply voltage for the integrated circuit device, Vi...input voltage to the switching power supply section, Vo...output voltage of the switching power supply section.
Claims (1)
電子装置の動作状態を制御する制御端子と、この
制御端子の電位を常時監視してその値があらかじ
め設定された電位範囲内にある時にのみ電子装置
を動作状態に入れる動作発停回路と、制御端子に
対して設定電位範囲よりも高い電位を掛ける電位
賦与手段と、この電位賦与手段により制御端子に
掛けられる電位を設定電位範囲内に制限して保持
する電位保持回路とを備え、制御端子電位を外部
から設定電位範囲外に指定することにより電子装
置を停止状態に保持し、この指定状態を解除して
電位保持回路により制御端子電位を設定電位範囲
内に保持させることにより電子装置を動作状態に
入れ、電子装置の異常動作時に電位保持回路によ
る制御端子電位の保持動作を解除して電子装置の
動作を自動停止させるようにしたことを特徴とす
る電子回路用動作状態制御回路。 A control terminal that is connectable to an external circuit and controls the operating state of the electronic device based on its potential, and the potential of this control terminal is constantly monitored and the electronic device is activated only when the value is within a preset potential range. An operation start/stop circuit that puts the control terminal into an operating state, a potential applying means that applies a potential higher than a set potential range to the control terminal, and a potential applied to the control terminal by the potential applying means to limit and maintain it within the set potential range. The electronic device is held in a stopped state by externally specifying the control terminal potential outside the set potential range, and when the specified state is released, the control terminal potential is set within the set potential range by the potential holding circuit. The electronic device is put into an operating state by holding the potential within the control terminal, and when the electronic device malfunctions, the holding operation of the control terminal potential by the potential holding circuit is released and the operation of the electronic device is automatically stopped. Operating state control circuit for electronic circuits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990033965U JP2500779Y2 (en) | 1990-03-30 | 1990-03-30 | Switching power supply control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990033965U JP2500779Y2 (en) | 1990-03-30 | 1990-03-30 | Switching power supply control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03124218U true JPH03124218U (en) | 1991-12-17 |
JP2500779Y2 JP2500779Y2 (en) | 1996-06-12 |
Family
ID=31538029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990033965U Expired - Fee Related JP2500779Y2 (en) | 1990-03-30 | 1990-03-30 | Switching power supply control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2500779Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008183228A (en) * | 2007-01-30 | 2008-08-14 | Pigeon Corp | Rollator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284614A (en) * | 1987-05-18 | 1988-11-21 | Matsushita Electric Ind Co Ltd | Power supply circuit |
JPH01155410A (en) * | 1987-12-11 | 1989-06-19 | Matsushita Electric Ind Co Ltd | Stabilizing power unit |
-
1990
- 1990-03-30 JP JP1990033965U patent/JP2500779Y2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284614A (en) * | 1987-05-18 | 1988-11-21 | Matsushita Electric Ind Co Ltd | Power supply circuit |
JPH01155410A (en) * | 1987-12-11 | 1989-06-19 | Matsushita Electric Ind Co Ltd | Stabilizing power unit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008183228A (en) * | 2007-01-30 | 2008-08-14 | Pigeon Corp | Rollator |
Also Published As
Publication number | Publication date |
---|---|
JP2500779Y2 (en) | 1996-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |