JPS59138912U - power circuit - Google Patents

power circuit

Info

Publication number
JPS59138912U
JPS59138912U JP3054683U JP3054683U JPS59138912U JP S59138912 U JPS59138912 U JP S59138912U JP 3054683 U JP3054683 U JP 3054683U JP 3054683 U JP3054683 U JP 3054683U JP S59138912 U JPS59138912 U JP S59138912U
Authority
JP
Japan
Prior art keywords
power supply
power circuit
supply circuit
booster transistor
overcurrent
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
Application number
JP3054683U
Other languages
Japanese (ja)
Inventor
宇民 相馬
宏 真野
保弘 熊本
Original Assignee
コニカ株式会社
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 by コニカ株式会社 filed Critical コニカ株式会社
Priority to JP3054683U priority Critical patent/JPS59138912U/en
Publication of JPS59138912U publication Critical patent/JPS59138912U/en
Pending legal-status Critical Current

Links

Landscapes

  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の定電圧電源回路の一例、第２図は本考案
による電源回路の一実施例である。 １・・・定電圧レギュレータ用ＩＣ，２・・・電流リミ
ッタ、３・・・サーミスタ、４・・・温度リミッタ、Ｔ
ｒｌ・・・ブースタトランジスタ。 １図FIG. 1 shows an example of a conventional constant voltage power supply circuit, and FIG. 2 shows an embodiment of the power supply circuit according to the present invention. 1... IC for constant voltage regulator, 2... Current limiter, 3... Thermistor, 4... Temperature limiter, T
rl...Booster transistor. Figure 1

Claims (1)

【実用新案登録請求の範囲】 ブースタトランジスタと、該ブースタトランジスタを過
電流に対して保護する過電流保護回路へを有する電源回
路において、該電源回路の周囲温度が所定温度を超えた
とき前記ブースタトランジスタを遮断する温度過昇保護
回路を設けたことを特徴とする電源回路。 第[Claims for Utility Model Registration] In a power supply circuit having a booster transistor and an overcurrent protection circuit that protects the booster transistor from overcurrent, when the ambient temperature of the power supply circuit exceeds a predetermined temperature, the booster transistor A power supply circuit characterized by being provided with an overtemperature rise protection circuit that shuts off. No.
JP3054683U 1983-03-04 1983-03-04 power circuit Pending JPS59138912U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3054683U JPS59138912U (en) 1983-03-04 1983-03-04 power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3054683U JPS59138912U (en) 1983-03-04 1983-03-04 power circuit

Publications (1)

Publication Number Publication Date
JPS59138912U true JPS59138912U (en) 1984-09-17

Family

ID=30161430

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3054683U Pending JPS59138912U (en) 1983-03-04 1983-03-04 power circuit

Country Status (1)

Country Link
JP (1) JPS59138912U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193909A (en) * 1988-01-29 1989-08-03 Hitachi Ltd Circuit for detecting and protecting state of semiconductor element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411459A (en) * 1977-06-29 1979-01-27 Toshiba Corp Constant voltage circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411459A (en) * 1977-06-29 1979-01-27 Toshiba Corp Constant voltage circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193909A (en) * 1988-01-29 1989-08-03 Hitachi Ltd Circuit for detecting and protecting state of semiconductor element

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