CN1122969A - 音频功率输出电路 - Google Patents

音频功率输出电路 Download PDF

Info

Publication number
CN1122969A
CN1122969A CN 94113800 CN94113800A CN1122969A CN 1122969 A CN1122969 A CN 1122969A CN 94113800 CN94113800 CN 94113800 CN 94113800 A CN94113800 A CN 94113800A CN 1122969 A CN1122969 A CN 1122969A
Authority
CN
China
Prior art keywords
output circuit
power output
emitter
audio power
output
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
CN 94113800
Other languages
English (en)
Inventor
杜一敏
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN 94113800 priority Critical patent/CN1122969A/zh
Publication of CN1122969A publication Critical patent/CN1122969A/zh
Pending legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)

Abstract

本发明公开了一种瞬态偏置超线性音频功率输出电路，将TR1、TR2的基极合并作输入端，TR1、TR2的集电极电流分别控制TR3、TR4的基极电流，由TR3、TR4集电极作输出端。本发明具有结构简单，能使放大器的音质大幅度提高的特点。

Description

音频功率输出电路
本发明涉及一种音频功率输出电路，确切地说，它是一种瞬态偏置超线性音频功率输出电路。
众所周知，当今的晶体管音频功率放大器的功率输出电路大多数均采用互补推挽输出电路。传统的电路，通常是因输出晶体管的BE结存在非线性输出阻抗，输出晶体管在整个工作电流范围内难以摆脱其非线性的影响，放大器的音质难以提高。
本发明就是为了克服传统互补推挽电路的非线性输出特性而提出的一种功率输出电路。
本发明的任务是这样实现的，由TR1、TR2作为控制输入管TR1、TR2的基极合并作输入端，TR1、TR2的集电极电流分别与TR3、TR4的基极相连，也就是说，TR1、TR2的集电极电流分别控制TR3、TR4的基极电流。TR3、TR4作为功率输出管，TR3TR4集电极相连作输出端，由R1、R2、R3R4组成的偏置电路能起到瞬态偏置的作用，从而保证TR1、TR2始终工作在线性区域，保证输出的线性，R3、R4一端直接与输出端连接，另一端分别接在TR1TR2的发射极上，电阻R1一端接在TR1的发射极上，另一端接在电源1EC上，电阻R2一端接在TR2发射极上，另一端接在电源1EE上。
本发明具有电路结构简单，能使放大器的音质能够大幅度提高的特点。
以下将结合附图对本发明作进一步的描述。
附图为本发明的电路图。
图中R1、R2即是TR1、TR2的射随器负载电阻，又是瞬态偏置电阻，当电压变化时，R1R2产生电流变化ΔI，ΔI将在R3、R4产生电压变化，从而对TR1、TR2的偏置产生影响，ΔI必须大于TR3、TR4基极的变化电流，因此，R1R2要取小于TR3、TR4的β值与负载阻抗RL的乘积。

Claims (1)

1、一种音频功率输出电路，其特征在于：TR1、TR2的基极合并作输入端，TR1、TR2的集电极分别与TR3、TR4基极相连，TR3、TR4集电极相连作输出端，R3、R4一端直接与输出端连接，另一端分别接在TR1、TR2的发射极上，电阻R1一端接在TR1的发射极上、另一端接电源1EC，电阻R2一端接在TR2发射极上，另一端接在电源1EE上
CN 94113800 1994-11-08 1994-11-08 音频功率输出电路 Pending CN1122969A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 94113800 CN1122969A (zh) 1994-11-08 1994-11-08 音频功率输出电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94113800 CN1122969A (zh) 1994-11-08 1994-11-08 音频功率输出电路

Publications (1)

Publication Number Publication Date
CN1122969A true CN1122969A (zh) 1996-05-22

Family

ID=5036821

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 94113800 Pending CN1122969A (zh) 1994-11-08 1994-11-08 音频功率输出电路

Country Status (1)

Country Link
CN (1) CN1122969A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105099430A (zh) * 2015-08-16 2015-11-25 重庆电子工程职业学院 一种功率输出电路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105099430A (zh) * 2015-08-16 2015-11-25 重庆电子工程职业学院 一种功率输出电路
CN105099430B (zh) * 2015-08-16 2017-09-29 重庆电子工程职业学院 一种功率输出电路

Similar Documents

Publication Publication Date Title
CN1202447C (zh) 线性调节器
EP0938188A3 (en) Variable gain amplifier circuit
KR940000940B1 (ko) 신호억압용스위칭장치
CN1122969A (zh) 音频功率输出电路
CN112583412A (zh) 数模转换电路和数模转换器
SE9800635D0 (sv) A differential line driver
CN1113456C (zh) 用于降低和稳定达林顿－耦合输出级的放大倍数的一个装置
US4476440A (en) Cross coupled amplifier
CN2257105Y (zh) 无电容音频功率放大器
JPS5590110A (en) Amplifier
US4393346A (en) Voltage controlled resistor
CN2324704Y (zh) 功率放大器末级电流放大装置
CN111585521A (zh) 一种电压电流双反馈放大电路、功率放大器和耳机
EP1418665A4 (en) FREQUENCY CONVERTER
JPH0210666Y2 (zh)
CN1052230A (zh) 跨导放大器
JPH0630422B2 (ja) 電子スイツチ
CN2214715Y (zh) 电子管正栅压音频功率放大器
CN2197778Y (zh) 交换机用户接口馈电部件
CN2429968Y (zh) 低压无触点开关装置
SU1543538A1 (ru) Усилитель мощности
JPS56162514A (en) Pulse-width modulating and amplifying circuit
CN117895907A (zh) 砷化镓放大器工作电流稳定电路系统
CN1112760C (zh) 共基偏压功率放大器
CN2604826Y (zh) 用于功率放大器增益控制的温度补偿装置

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C57 Notification of unclear or unknown address
DD01 Delivery of document by public notice

Addressee: Du Yimin

Document name: Notice of first review

C57 Notification of unclear or unknown address
DD01 Delivery of document by public notice

Addressee: Du Yimin

Document name: Deemed as a notice of withdrawal

C01 Deemed withdrawal of patent application (patent law 1993)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1035423

Country of ref document: HK