JPS62138214U - - Google Patents
Info
- Publication number
- JPS62138214U JPS62138214U JP2205086U JP2205086U JPS62138214U JP S62138214 U JPS62138214 U JP S62138214U JP 2205086 U JP2205086 U JP 2205086U JP 2205086 U JP2205086 U JP 2205086U JP S62138214 U JPS62138214 U JP S62138214U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- base
- transistor
- emitter
- current detection
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Electrical Variables (AREA)
Description
第１図は本考案の一実施例に係る安定化電源の
過電流保護回路の回路図、第２図は及び第３図そ
れぞれ従来の安定化電源の過電流保護回路の回路
図である。
Ｔ１……主トランジスタ、Ｔ２……保護トラン
ジスタ、Ｒｃ……電流検出用抵抗器、Ｄｃ……シ
ヨツトキーダイオード。
FIG. 1 is a circuit diagram of an overcurrent protection circuit for a stabilized power supply according to an embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams of conventional overcurrent protection circuits for a stabilized power supply. T1...Main transistor, T2...Protection transistor, Rc...Resistor for current detection, Dc...Shotkey diode.
Claims (1)
スとの間に、ベースとコレクタが接続された保護
トランジスタと、 電流検出用抵抗器とダイオードとの直列回路か
らなり、安定化電源の主トランジスタに直列に接
続されると共に、前記保護トランジスタのエミツ
タとベースとの間に接続された電流検出回路と、
を備えたことを特徴とする安定化電源の過電流保
護回路。[Claim for Utility Model Registration] A stabilized power supply consisting of a protection transistor whose base and collector are connected between the emitter and base of the main transistor, and a series circuit of a current detection resistor and a diode. a current detection circuit connected in series to the main transistor of the power supply and between the emitter and base of the protection transistor;
An overcurrent protection circuit for a stabilized power supply, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022050U JP2518478Y2 (en) | 1986-02-20 | 1986-02-20 | Overcurrent protection circuit for stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022050U JP2518478Y2 (en) | 1986-02-20 | 1986-02-20 | Overcurrent protection circuit for stabilized power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62138214U true JPS62138214U (en) | 1987-08-31 |
| JP2518478Y2 JP2518478Y2 (en) | 1996-11-27 |
Family
ID=30819061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986022050U Expired - Lifetime JP2518478Y2 (en) | 1986-02-20 | 1986-02-20 | Overcurrent protection circuit for stabilized power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518478Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021129A (en) * | 1988-01-08 | 1990-01-05 | Toshiba Corp | Semiconductor device |
| JP2012060697A (en) * | 2010-09-06 | 2012-03-22 | Tokyo Coil Engineering Kk | Constant current circuit for charge, and charging apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547516A (en) * | 1978-08-30 | 1980-04-04 | Hitachi Denshi Ltd | Power source stabilizing output control circuit |
| JPS5839617U (en) * | 1981-09-07 | 1983-03-15 | ソニー株式会社 | Stabilized power supply circuit |
-
1986
- 1986-02-20 JP JP1986022050U patent/JP2518478Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547516A (en) * | 1978-08-30 | 1980-04-04 | Hitachi Denshi Ltd | Power source stabilizing output control circuit |
| JPS5839617U (en) * | 1981-09-07 | 1983-03-15 | ソニー株式会社 | Stabilized power supply circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021129A (en) * | 1988-01-08 | 1990-01-05 | Toshiba Corp | Semiconductor device |
| JP2012060697A (en) * | 2010-09-06 | 2012-03-22 | Tokyo Coil Engineering Kk | Constant current circuit for charge, and charging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2518478Y2 (en) | 1996-11-27 |