The Oscilloscope
示波器
Long a standard tool in the electronics shop, the versatile oscilloscope uses an electron beam to trace the voltage as a function of time. While that is the standard application, a second voltage can be applied to the horizontal deflection plates instead of the timing ramp voltage to produce an xy plot.
长期以来，示波器一直是电子商店的标准工具，它利用电子束来描绘电压随时间的变化。虽然这是其标准应用，但也可以将第二个电压加到水平偏转板上，而不是时间阶梯电压，从而产生xy图。
Electrons released by thermionic emission from the hot filament in the electron gun are accelerated by a high voltage and focused to produce an energetic electron beam. The phosphor glows at the point of impact of the electron beam, and that glow is persistent enough for you to be able to see the entire trace of the electron beam across the screen.
从电子枪中热丝释放出来的电子在高电压作用下被加速并聚焦，形成一股高能电子束。电子束撞击荧光屏上的某一点时，该点会发出光 glow，这种光足够持久，使你能够看到电子束在整个屏幕上留下的痕迹。
| Example with sound and a microphone
声波与麦克风的示例 |
| Simplified oscilloscope controls
简化的示波器控制 | Example instrument controls
示例仪器控制 |
Electronics concepts
索引电子学概念
| HyperPhysics*****Electricity and magnetism
HyperPhysics ***** 电磁学 | R Nave |
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