JPS5570111A - Protective circuit for amplifier - Google Patents

Protective circuit for amplifier

Info

Publication number
JPS5570111A
JPS5570111A JP14444978A JP14444978A JPS5570111A JP S5570111 A JPS5570111 A JP S5570111A JP 14444978 A JP14444978 A JP 14444978A JP 14444978 A JP14444978 A JP 14444978A JP S5570111 A JPS5570111 A JP S5570111A
Authority
JP
Japan
Prior art keywords
output
amplifier
terminal
short
circuit
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
JP14444978A
Other languages
Japanese (ja)
Inventor
Kiyomitsu Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14444978A priority Critical patent/JPS5570111A/en
Publication of JPS5570111A publication Critical patent/JPS5570111A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To secure the sufficient output DC short-circuit protecting function even at the make of the power source by setting the conduction start voltage of the output DC short-circuit protective circuit of the amplifier lower than the conduction start voltage of the output transistor of the amplifier. CONSTITUTION:One end of resistance 27 is connected to power terminal 10 used in common to outout Dc short-circuit protective circuit 20, and the other end is earthed via diodes 25 and 26. Here with output terminal 12 earthed directly, transistors 21a and 21b absorb the driving current of output Tr4 of amplifier 20 in which the emitter is connected to terminal 12. And Tr21a and 21b conduct earlier than output Tr4 of amplifier 20 when the voltage is applied to terminal 10 with terminal 12 earthed. As a result, the output DC short-circuit protecting function can be obtained enough even at the make of the power source.
JP14444978A 1978-11-20 1978-11-20 Protective circuit for amplifier Pending JPS5570111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14444978A JPS5570111A (en) 1978-11-20 1978-11-20 Protective circuit for amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14444978A JPS5570111A (en) 1978-11-20 1978-11-20 Protective circuit for amplifier

Publications (1)

Publication Number Publication Date
JPS5570111A true JPS5570111A (en) 1980-05-27

Family

ID=15362483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14444978A Pending JPS5570111A (en) 1978-11-20 1978-11-20 Protective circuit for amplifier

Country Status (1)

Country Link
JP (1) JPS5570111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170012009A (en) 2015-07-24 2017-02-02 김명숙 Urinary Incontinence Clip for Men

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170012009A (en) 2015-07-24 2017-02-02 김명숙 Urinary Incontinence Clip for Men

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