Mast Head Amplifier 塔顶放大器
HA Head Amplifier 前置放大器
video head amplifier 录放象头放大器
HTU Head Amplifier 前置放大器
Mic Amplifier for artificial head 人工头的麦克风放大器
Additionally, the head amplifier adopts a differential amplification mode to test the change of the signals on the secondary end for eliminating various interfering signals.
此外，为消除各种干扰信号，前置放大器采用差动放大方式来检测次级端上的信号变化。
In the television system, the head amplifier, whose low noise being put the first place in all the features, is one of the most important element circuits, which determines the image quality.
预放器是电视系统中决定图象质量最关键单元电路之一，而在预放器所有特点中，要求低噪声居首位。
At the same time this kind of material is also the best material for high fidelity magnetic head, high performance magnetic amplifier.
同时这种材料也是高灵敏度保真磁头、高性能磁放大器元件的最佳材料。
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