没有合适的资源?快使用搜索试试~ 我知道了~
温馨提示
试读
12页
There are a number of ways of visualising the operation and significance of a lock-in amplifier. As an introduction to the subject there follows a simple intuitive account biased towards light measurement applications. All lock-in amplifiers, whether analogue or digital, rely on the concept of phase sensitive detection for their operation. Stated simply, phase sensitive detection refers to the demodulation or rectification of an ac signal by a circuit which is controlled by a reference waveform derived from the device which caused the signal to be modulated. The phase sensitive detector effectively responds to signals which are coherent (same frequency and phase) with the reference waveform and rejects all others.
资源推荐
资源评论
资源评论
Dofafa
- 粉丝: 0
- 资源: 7
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功