通用前置放大器电路--Universal Preamplif
通用前置放大器电路--universal preamplifier
most audio amplifier systems must have preamplifiers with many different characteristics. these include high-gain linear response for magnetic microphones, low-gain linear response for tuners, and high-gain riaa equalization for magnetic phone cartridges.
to meet this broad requirement, most amplifier designers include a single universal preamplifier circuit. basically a high-gain linear amplifier, its characteristics can be altered by switching alternative resistor filter networks into its feedback system.
for example, when the selector switch is set to the mag phono position, alternative input sources can be selected by s1-a, and appropriate linear-response gain control feedback resistors 220k, 470k, and 1m are now selected by s1-b. those feedback resistor values are selected between 10 kilo ohms and 10 megohms to suit individual listener tastes. circuit gain will be proportional, to the feedback resistor value.
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most audio amplifier systems must have preamplifiers with many different characteristics. these include high-gain linear response for magnetic microphones, low-gain linear response for tuners, and high-gain riaa equalization for magnetic phone cartridges.
to meet this broad requirement, most amplifier designers include a single universal preamplifier circuit. basically a high-gain linear amplifier, its characteristics can be altered by switching alternative resistor filter networks into its feedback system.
for example, when the selector switch is set to the mag phono position, alternative input sources can be selected by s1-a, and appropriate linear-response gain control feedback resistors 220k, 470k, and 1m are now selected by s1-b. those feedback resistor values are selected between 10 kilo ohms and 10 megohms to suit individual listener tastes. circuit gain will be proportional, to the feedback resistor value.
基于MSP430系列单片机的常用程序编写总结
dfrobotDC24V转DC9V5A电源转换器简介
建议收藏！界面设计必备的8个素材网站
高光谱和多光谱的区别
Trinamic推出最新电池驱动解决方案电机驱动器IC——TMC6300
通用前置放大器电路--Universal Preamplif
合杆到底是什么,有哪些特点
5G火车站启动建设暨华为5G DIS室内数字系统全球首发仪式
搭载双模5G骁龙865的OPPO Ace2将突破手游帧率局限
电风扇阵风控制电路
现在的智能家居发展迅速我们的信息被共享，隐私能得到保障？
华为到底有多少核心技术呢？能不能抵抗住美国的封杀和制裁呢？
风电变流器的作用_风电变流器系统构成
N沟道场效应管栅极（G极）电压是否可以大于漏极（D极）电压？
最暖心的测量方法：残余相位噪声测量法
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