JPS55134509A - Output amplifier - Google Patents

Output amplifier

Info

Publication number
JPS55134509A
JPS55134509A JP4110379A JP4110379A JPS55134509A JP S55134509 A JPS55134509 A JP S55134509A JP 4110379 A JP4110379 A JP 4110379A JP 4110379 A JP4110379 A JP 4110379A JP S55134509 A JPS55134509 A JP S55134509A
Authority
JP
Japan
Prior art keywords
drain
mosfet
efficiency
resistances
mosfet10
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
JP4110379A
Other languages
Japanese (ja)
Inventor
Nobutaka Amada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4110379A priority Critical patent/JPS55134509A/en
Publication of JPS55134509A publication Critical patent/JPS55134509A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3001—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor with field-effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/516—Some amplifier stages of an amplifier use supply voltages of different value

Landscapes

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

Abstract

PURPOSE:To improve the efficiency of a high-efficiency amplifying circuit using MOSFET, by using resistances instead of drain-source saturation preventing Zener diodes of output-stage MOSFET. CONSTITUTION:Intead of drain-source saturation preventing Zener diodes of output-stage MOSFET10 and MOSFET11 of a high-efficient amplifying circuit using MOSFETs, resistances 20 and 21 are connected. Then, MOSFET10 and MOSFET 11 can be prevented from saturating by adequately setting resistance values of those resistances 20 and 21. As a result, the arrival of a positive signal decreases the drain source voltage of FET10, and the drain current of FET12 also decreases, lessening the loss of FET. On arrival of a negative signal, the same effect can be obtained. Therefore, the lessening of the loss provides the improvement of the efficiency.
JP4110379A 1979-04-06 1979-04-06 Output amplifier Pending JPS55134509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4110379A JPS55134509A (en) 1979-04-06 1979-04-06 Output amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4110379A JPS55134509A (en) 1979-04-06 1979-04-06 Output amplifier

Publications (1)

Publication Number Publication Date
JPS55134509A true JPS55134509A (en) 1980-10-20

Family

ID=12599133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4110379A Pending JPS55134509A (en) 1979-04-06 1979-04-06 Output amplifier

Country Status (1)

Country Link
JP (1) JPS55134509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6310906A (en) * 1986-07-02 1988-01-18 Alpine Electron Inc Power amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6310906A (en) * 1986-07-02 1988-01-18 Alpine Electron Inc Power amplifier

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