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FR2453537A1 - Power amplifier for class B and C operation - uses symmetrical stages comprising complementary transistors to improve quality of amplified signal - Google Patents

Power amplifier for class B and C operation - uses symmetrical stages comprising complementary transistors to improve quality of amplified signal

Info

Publication number
FR2453537A1
FR2453537A1 FR8007478A FR8007478A FR2453537A1 FR 2453537 A1 FR2453537 A1 FR 2453537A1 FR 8007478 A FR8007478 A FR 8007478A FR 8007478 A FR8007478 A FR 8007478A FR 2453537 A1 FR2453537 A1 FR 2453537A1
Authority
FR
France
Prior art keywords
class
power amplifier
amplified signal
complementary transistors
improve quality
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
FR8007478A
Other languages
French (fr)
Other versions
FR2453537B3 (en
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.)
INST RADIOELEKTRONIKA
Original Assignee
INST RADIOELEKTRONIKA
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 INST RADIOELEKTRONIKA filed Critical INST RADIOELEKTRONIKA
Publication of FR2453537A1 publication Critical patent/FR2453537A1/en
Application granted granted Critical
Publication of FR2453537B3 publication Critical patent/FR2453537B3/fr
Granted 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
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor

Landscapes

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

Abstract

The amplifier comprises a preamplifier (1) with complementary transistors coupled through resistors (2) to the signal source. The collector of each transistor is connected to the base of a control transistor (3, 8) whose emmitter is connected to one pole of a centre tapped d.c. supply. The collector connections are to the base of power transistors (5, 9, 7, 10) of B and C class amplifiers. The emitter circuits of the complementary power transistors are connected to their respective primary windings (11, 12) of the output transformer supplying the amplifier load (16), and also through feedback resistors (13, 14) to the preamplifier. The circuit eliminates the need for large electrolytic capacitors in the class B amplifier reducing cost, bulk, and also the tendency to signal distortion.
FR8007478A 1979-04-04 1980-04-02 Power amplifier for class B and C operation - uses symmetrical stages comprising complementary transistors to improve quality of amplified signal Granted FR2453537A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG7943124A BG29119A1 (en) 1979-04-04 1979-04-04 Amplifier for power class b+c

Publications (2)

Publication Number Publication Date
FR2453537A1 true FR2453537A1 (en) 1980-10-31
FR2453537B3 FR2453537B3 (en) 1981-12-24

Family

ID=3905887

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8007478A Granted FR2453537A1 (en) 1979-04-04 1980-04-02 Power amplifier for class B and C operation - uses symmetrical stages comprising complementary transistors to improve quality of amplified signal

Country Status (4)

Country Link
BG (1) BG29119A1 (en)
DE (1) DE3012919A1 (en)
FR (1) FR2453537A1 (en)
SU (1) SU1083338A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477339A1 (en) * 1980-02-29 1981-09-04 Inst Radioelektronika POWER AMPLIFIER
FR2481538A1 (en) * 1980-04-29 1981-10-30 Vmei Lenin Nis BC CLASS POWER AMPLIFIER

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668919A (en) * 1986-02-19 1987-05-26 Advanced Micro Devices, Inc. High speed operational amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477339A1 (en) * 1980-02-29 1981-09-04 Inst Radioelektronika POWER AMPLIFIER
FR2481538A1 (en) * 1980-04-29 1981-10-30 Vmei Lenin Nis BC CLASS POWER AMPLIFIER

Also Published As

Publication number Publication date
SU1083338A1 (en) 1984-03-30
BG29119A1 (en) 1980-09-15
FR2453537B3 (en) 1981-12-24
DE3012919A1 (en) 1980-10-23

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Legal Events

Date Code Title Description
ST Notification of lapse