JPH0360839U - - Google Patents

Info

Publication number
JPH0360839U
JPH0360839U JP11751089U JP11751089U JPH0360839U JP H0360839 U JPH0360839 U JP H0360839U JP 11751089 U JP11751089 U JP 11751089U JP 11751089 U JP11751089 U JP 11751089U JP H0360839 U JPH0360839 U JP H0360839U
Authority
JP
Japan
Prior art keywords
load
load driving
transistor
driving transistor
protection
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
Application number
JP11751089U
Other languages
Japanese (ja)
Other versions
JPH0742197Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989117510U priority Critical patent/JPH0742197Y2/en
Publication of JPH0360839U publication Critical patent/JPH0360839U/ja
Application granted granted Critical
Publication of JPH0742197Y2 publication Critical patent/JPH0742197Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案に係る保護機能付負荷駆動装
置の一実施例を示す回路結線図、第２図は従来の
保護機能付負荷駆動装置の一例を示す回路結線図
である。 ２……負荷駆動用トランジスタ、７……負荷、
２２……トランジスタ。 FIG. 1 is a circuit diagram showing an embodiment of the load driving device with a protection function according to the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional load driving device with a protection function. 2...Load driving transistor, 7...Load,
22...transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 負荷駆動用トランジスタ２のエミツタを電源に
、コレクタを負荷７に接続すると共に、上記負荷
駆動用トランジスタのベースに供給される制御信
号に応じた大きさの電流を上記負荷に流し、かつ
上記負荷への過電流の供給を検知して上記負荷駆
動用トランジスタを非動作状態とするようにした
保護機能付負荷駆動装置において、上記負荷へ供
給される過電流を検知して上記負荷駆動用トラン
ジスタを非動作状態とする保護用トランジスタ２
２のベースを上記負荷駆動用トランジスタの出力
端子に接続すると共に、上記保護用トランジスタ
の出力端を上記負荷駆動用トランジスタのベース
に接続したことを特徴とする保護機能付負荷駆動
装置。 The emitter of the load driving transistor 2 is connected to the power supply, the collector is connected to the load 7, and a current of a magnitude according to the control signal supplied to the base of the load driving transistor 2 is caused to flow to the load, and to the load. In the load driving device with a protection function, the load driving transistor is deactivated by detecting an overcurrent supplied to the load. Protection transistor 2 in operation state
A load driving device with a protection function, characterized in that the base of the protection transistor 2 is connected to the output terminal of the load driving transistor, and the output terminal of the protection transistor is connected to the base of the load driving transistor.
JP1989117510U 1989-10-05 1989-10-05 Load drive device with protection function Expired - Lifetime JPH0742197Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989117510U JPH0742197Y2 (en) 1989-10-05 1989-10-05 Load drive device with protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989117510U JPH0742197Y2 (en) 1989-10-05 1989-10-05 Load drive device with protection function

Publications (2)

Publication Number Publication Date
JPH0360839U true JPH0360839U (en) 1991-06-14
JPH0742197Y2 JPH0742197Y2 (en) 1995-09-27

Family

ID=31665726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989117510U Expired - Lifetime JPH0742197Y2 (en) 1989-10-05 1989-10-05 Load drive device with protection function

Country Status (1)

Country Link
JP (1) JPH0742197Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002077881A (en) * 2000-08-31 2002-03-15 Sony Corp Image pickup and processing device and monitoring system
JP2009171368A (en) * 2008-01-18 2009-07-30 Hitachi Ltd Remote monitoring apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134840U (en) * 1980-03-13 1981-10-13
JPS5950712A (en) * 1982-09-14 1984-03-23 富士電機株式会社 Load shortcircuit protecting circuit
JPS63121429A (en) * 1986-11-07 1988-05-25 ペリフエラルインタ−フエイスリミテツド有限会社 Overcurrent protecting circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134840U (en) * 1980-03-13 1981-10-13
JPS5950712A (en) * 1982-09-14 1984-03-23 富士電機株式会社 Load shortcircuit protecting circuit
JPS63121429A (en) * 1986-11-07 1988-05-25 ペリフエラルインタ−フエイスリミテツド有限会社 Overcurrent protecting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002077881A (en) * 2000-08-31 2002-03-15 Sony Corp Image pickup and processing device and monitoring system
JP2009171368A (en) * 2008-01-18 2009-07-30 Hitachi Ltd Remote monitoring apparatus

Also Published As

Publication number Publication date
JPH0742197Y2 (en) 1995-09-27

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