The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
放大器输入为电压信号，与光敏二极管产生的光电流信号成比例。调制光柱以断路器同样的频率照射光敏二极管。
Many practical amplifiers chain together a series of analog amplifier stages to obtain a high overall voltage gain.
许多实际的放大器将多个放大器级联起来，以获得较高的电压增益。
LDMOS is also widely used in the field of large area flat panel displays and automotive electronics as a high-voltage power amplifier devices.
而作为高压功率放大器件，在各种大面积平板显示屏和汽车电子领域也得到广泛应用。
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