单选题
脑电图仪放大器的组成是（ ）。
发布日期：2022-07-17
后置功率放大和输出阻抗
输出阻抗和输入电压放大
输入电压放大和后置功率放大
前置电压放大和输入电压放大
前置电压放大和后置功率放大
试题解析
脑电图仪
通常由脑电电极、脑电导线、放大器、显示单元、主机等部分组成。用于脑电信号的提取、放大、滤波、记录、分析、回放等。脑电图仪是神经系统疾病诊断的必备仪器,也常见于临床的麻醉监护和重症监护病房.
- 中文名
- 脑电图仪
- 用途
- 用于对患者精神性疾病和脑部实质性病变的分析诊断、脑部功能状态评估
- 外文名
- EEG
放大器
放大器是能把输入讯号的电压或功率放大的装置，由电子管或晶体管、电源变压器和其他电器元件组成。用在通讯、广播、雷达、电视、自动控制等各种装置中。
- 中文名
- 放大器
- 科目类别
- 电子电路
- 外文名
- Amplifier
- 用途
- 电压、功率放大
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