模拟电子技术课程设计说明书
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将输入信号放大并向负载提供足够大功率的放大器叫功率放大器。 功率放大 器的任务, 是要在保证电路各部分安全的前提下给出足够的功率以推动负载, 安 全可靠地发挥功率放大部分的作用, 获得尽可能大的功率和效率, 由于功率放大 器运行中同一功放的输出功率越大, 非线性失真往往越严重, 其突出的问题就是 要解决非线性失真和输出功率之间的矛盾, 达到一种平衡。 所以功率放大器的主 要任务是在不失真前提下,放大信号的功率。一般在电路结构上采用不同形式, 来减小信号的失真, 提高输出功率, 满足人们对功率放大设备的不同需求。 经过 多方查阅、试验,并对各种方案进行了对比,根据现有的条件进行了设计
Keywords: low freque ncy po wer amp lifier; Tran sistor; amp lifier; Prea mp lifier circuit; Volume tone adjustme nt circuit
1方案设计与要求
2仿真分析
2.1低频功率放大器的参数选择
The input sig nal is to enl arge and to load of high power amp lifier that pro vide eno ugh po wer amp lifier. The task of po wer amp lifier, is to secure the safety of the po wer consump ti on un der the con diti on of the give n eno ugh po wer to pro mote the load, how to p lay safe and reliable po wer tran sistor effect, get p layi ng po wer as far as possible, becausethe operation of the power amplifier signal amplitude (voltage, current, the prominent problem is to solve nonlinear distortions and all kinds of transient distortion. So power amplifier is the main task of the distortion in the premise, amplify the signal power. General in the circuit structure using different forms, to reduce the distorti on of the sig nal, i mprove the out put po wer, conten ted people to the differe nt n eeds of audio equipment. After much access, test, and kinds of the scheme of comp aris on, accord ing to the existi ng con diti ons of the desig n
2.2低频功率放大器的仿真结果………
3硬件系统的设计
模拟电子技术课程设计说明书
低频功率放大器
院、 部:电气与信息工程学院
学生姓名:
指导教师:
贾雅琼 职称讲师
专 业:
自动化
班 级:
自本1001班
完成时间:
2012年10月14日
摘要
本电路 是一低频功率放大器。 整个电路主要由前置放大器、 音量音调调节电 路、功率放大器,共3个部分构成。
根据要求,该功放需具有音量调节功能, 所以可以在功率放大电路的输入端 接一个适当电阻值的滑动变阻器, 利用其分压作用, 通过调节输入信号幅值的大 小,间接调节输出率放大器;三极管;运放电路;前置放大电路;音量音调调 节电路
ABSTRACT
This circuit is a collector out put by the p ractical low-freque ncy po wer amp lifier. The mai n circuit by p re-am plifier, volume tone adjustme nt, po wer amp lifier circuit of three p arts.
Accordi ng to the requireme nts, the po wer amp lifier must have the volume adjustme nt function, so can be in po wer amp lifier circuit of the input to p ick up a proper resista nee slide rheostat, USES its points p ressure effect, adjust the input sig nal amp litude of the size, in direct adjust the size of the out put sig nal, achieve the purp ose of the volume con trol.
Keywords: low freque ncy po wer amp lifier; Tran sistor; amp lifier; Prea mp lifier circuit; Volume tone adjustme nt circuit
1方案设计与要求
2仿真分析
2.1低频功率放大器的参数选择
The input sig nal is to enl arge and to load of high power amp lifier that pro vide eno ugh po wer amp lifier. The task of po wer amp lifier, is to secure the safety of the po wer consump ti on un der the con diti on of the give n eno ugh po wer to pro mote the load, how to p lay safe and reliable po wer tran sistor effect, get p layi ng po wer as far as possible, becausethe operation of the power amplifier signal amplitude (voltage, current, the prominent problem is to solve nonlinear distortions and all kinds of transient distortion. So power amplifier is the main task of the distortion in the premise, amplify the signal power. General in the circuit structure using different forms, to reduce the distorti on of the sig nal, i mprove the out put po wer, conten ted people to the differe nt n eeds of audio equipment. After much access, test, and kinds of the scheme of comp aris on, accord ing to the existi ng con diti ons of the desig n
2.2低频功率放大器的仿真结果………
3硬件系统的设计
模拟电子技术课程设计说明书
低频功率放大器
院、 部:电气与信息工程学院
学生姓名:
指导教师:
贾雅琼 职称讲师
专 业:
自动化
班 级:
自本1001班
完成时间:
2012年10月14日
摘要
本电路 是一低频功率放大器。 整个电路主要由前置放大器、 音量音调调节电 路、功率放大器,共3个部分构成。
根据要求,该功放需具有音量调节功能, 所以可以在功率放大电路的输入端 接一个适当电阻值的滑动变阻器, 利用其分压作用, 通过调节输入信号幅值的大 小,间接调节输出率放大器;三极管;运放电路;前置放大电路;音量音调调 节电路
ABSTRACT
This circuit is a collector out put by the p ractical low-freque ncy po wer amp lifier. The mai n circuit by p re-am plifier, volume tone adjustme nt, po wer amp lifier circuit of three p arts.
Accordi ng to the requireme nts, the po wer amp lifier must have the volume adjustme nt function, so can be in po wer amp lifier circuit of the input to p ick up a proper resista nee slide rheostat, USES its points p ressure effect, adjust the input sig nal amp litude of the size, in direct adjust the size of the out put sig nal, achieve the purp ose of the volume con trol.