JPS5582514A - Protection circuit for power amplifier - Google Patents

Protection circuit for power amplifier

Info

Publication number
JPS5582514A
JPS5582514A JP15660778A JP15660778A JPS5582514A JP S5582514 A JPS5582514 A JP S5582514A JP 15660778 A JP15660778 A JP 15660778A JP 15660778 A JP15660778 A JP 15660778A JP S5582514 A JPS5582514 A JP S5582514A
Authority
JP
Japan
Prior art keywords
temperature
amplifier
power amplifier
protection circuit
given
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
JP15660778A
Other languages
Japanese (ja)
Inventor
Takeshi Sato
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15660778A priority Critical patent/JPS5582514A/en
Publication of JPS5582514A publication Critical patent/JPS5582514A/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

Abstract

PURPOSE:To enable to keep the temperature in the amplifier within a given range, by automatically selecting the power supply voltage through the detection of the temperature in the amplifier. CONSTITUTION:The output of the power supply transformer 1 is fed to the power amplifier 8 through the selection of high voltage or low voltage with the switches 2 and 3. The temperature of the amplifier 8 is detected with the temperature detection element 12 and when the temperature exceeds a given temperature, the supply voltage of the circuit 1 is automatically selected from high to low with the switches 2 and 3. Thus, the temperature in the amplifier 8 can be kept within a given temperature range.
JP15660778A 1978-12-18 1978-12-18 Protection circuit for power amplifier Pending JPS5582514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15660778A JPS5582514A (en) 1978-12-18 1978-12-18 Protection circuit for power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15660778A JPS5582514A (en) 1978-12-18 1978-12-18 Protection circuit for power amplifier

Publications (1)

Publication Number Publication Date
JPS5582514A true JPS5582514A (en) 1980-06-21

Family

ID=15631427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15660778A Pending JPS5582514A (en) 1978-12-18 1978-12-18 Protection circuit for power amplifier

Country Status (1)

Country Link
JP (1) JPS5582514A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603217A (en) * 1983-06-21 1985-01-09 Sanyo Electric Co Ltd Protecting circuit of amplifier
JPS6271308A (en) * 1985-09-25 1987-04-02 Kokusai Electric Co Ltd Method of protecting final stage high output transistor of radio transmitter
JPS6399412U (en) * 1986-12-18 1988-06-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603217A (en) * 1983-06-21 1985-01-09 Sanyo Electric Co Ltd Protecting circuit of amplifier
JPS6271308A (en) * 1985-09-25 1987-04-02 Kokusai Electric Co Ltd Method of protecting final stage high output transistor of radio transmitter
JPS6399412U (en) * 1986-12-18 1988-06-28

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