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三、自动调节电平的原理增音机任一方向支路中,在方向德波器之后设置调节网路,主要是两种自动调节电平设备,即平调放大器和斜调节器.在冬干气候仅需这两种设备.在线路衰耗大于冬干时,但又小于冰凌时的变化范围,须加上固定预斜的均衡器.到了冰凌气候,则需再加冰凌均衡器,斜度0.8奈.至于这些设备的排列次序,两方向有所不同.对于低频段接收则次序相反,平调放大器在前,斜调节器在后.这是因为在气候条件不好的时候,高频段输入信号电平很低,为了提高对机内杂音的防卫度,必须提高输入信号的电平.A～B方向,将平调放大器
Third, the principle of automatic adjustment level Amplifier any direction of the branch, after the setting of the direction of the network to adjust the network, mainly two automatic adjustment level device, that is, flat amplifier and ramp regulator in the winter Dry climate only these two kinds of equipment in the circuit loss greater than the winter dry, but less than the ice when the change range, plus a fixed pre-bevel equalizer to the ice climate, you need to add ice-lightener, oblique 0.8 degrees .As for the arrangement of these devices, the two directions are different.For the low-frequency reception in the opposite order, the parallel amplifier in the front, the adjuster is behind.It is because when the weather is not good, high-frequency Input signal level is very low, in order to improve the noise on the machine defense, you must increase the level of the input signal .A ~ B direction, the flat amplifier