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GB1395337A - Amplifiers - Google Patents

Amplifiers

Info

Publication number
GB1395337A
GB1395337A GB1580472A GB1580472A GB1395337A GB 1395337 A GB1395337 A GB 1395337A GB 1580472 A GB1580472 A GB 1580472A GB 1580472 A GB1580472 A GB 1580472A GB 1395337 A GB1395337 A GB 1395337A
Authority
GB
United Kingdom
Prior art keywords
transistors
resistors
april
conduct
respective pairs
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.)
Expired
Application number
GB1580472A
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.)
GOLDRING Ltd
Original Assignee
GOLDRING 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 GOLDRING Ltd filed Critical GOLDRING Ltd
Priority to GB1580472A priority Critical patent/GB1395337A/en
Priority to FR7311158A priority patent/FR2178912A1/fr
Publication of GB1395337A publication Critical patent/GB1395337A/en
Expired 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
    • H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits
    • 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3217—Modifications of amplifiers to reduce non-linear distortion in single ended push-pull amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)

Abstract

1395337 Transistor amplifier circuits GOLDRING Ltd 3 April 1973 [6 April 1972] 15804/72 Heading H3T In an audio frequency amplifier the emitters and collectors of two pairs of complementary transistors Tr1 Tr2 and Tr3, Tr4 respectively are connected as a bridge with the series connected transistors of the respective pairs disposed in the common emitter mode, the load being connected between the points of interconnection of the complementary transistors of the respective pairs, and the transistors are biased to conduct at all times and conduct a quiescent current which is a very small proportion of the current flowing in them when they are driven to peak power. In the embodiment a suitable bias is derived from resistors R1-R3 and R6-R8 respectively while emitter circuit resistors R4, R5, R9, R10 render the arrangement insensitive to variations in the characteristics of the transistors. Push -pull inputs are ap - plied over capacitors C1, C2 and C3, C4, while the base biases are stabilized by means of Zener diode D1 in conjunction with resistors R11, R12.
GB1580472A 1972-04-06 1972-04-06 Amplifiers Expired GB1395337A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1580472A GB1395337A (en) 1972-04-06 1972-04-06 Amplifiers
FR7311158A FR2178912A1 (en) 1972-04-06 1973-03-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1580472A GB1395337A (en) 1972-04-06 1972-04-06 Amplifiers

Publications (1)

Publication Number Publication Date
GB1395337A true GB1395337A (en) 1975-05-21

Family

ID=10065772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1580472A Expired GB1395337A (en) 1972-04-06 1972-04-06 Amplifiers

Country Status (1)

Country Link
GB (1) GB1395337A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100502A (en) * 1975-09-03 1978-07-11 Hitachi, Ltd. Class B FET amplifier circuit
GB2374220A (en) * 2001-01-17 2002-10-09 Jeffrey Peter Macaulay Simple and efficient class A amplifier output stage
WO2010071876A1 (en) * 2008-12-19 2010-06-24 Qualcomm Incorporated Class ab amplifier with resistive level-shifting circuitry
CN113556093A (en) * 2021-06-01 2021-10-26 惠州三华工业有限公司 High-voltage amplifier and multi-path adjustable high-voltage output power circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100502A (en) * 1975-09-03 1978-07-11 Hitachi, Ltd. Class B FET amplifier circuit
USRE31749E (en) * 1975-09-03 1984-11-27 Hitachi, Ltd. Class B FET amplifier circuit
GB2374220A (en) * 2001-01-17 2002-10-09 Jeffrey Peter Macaulay Simple and efficient class A amplifier output stage
GB2374220B (en) * 2001-01-17 2004-08-04 Jeffrey Peter Macaulay Simple efficient class a output stage
WO2010071876A1 (en) * 2008-12-19 2010-06-24 Qualcomm Incorporated Class ab amplifier with resistive level-shifting circuitry
CN102257727A (en) * 2008-12-19 2011-11-23 高通股份有限公司 Class ab amplifier with resistive level-shifting circuitry
US8536947B2 (en) 2008-12-19 2013-09-17 Qualcomm Incorporated Class AB amplifier with resistive level-shifting circuitry
CN113556093A (en) * 2021-06-01 2021-10-26 惠州三华工业有限公司 High-voltage amplifier and multi-path adjustable high-voltage output power circuit
CN113556093B (en) * 2021-06-01 2024-03-22 惠州三华工业有限公司 High-voltage amplifier and multi-path adjustable high-voltage output power supply circuit

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees