电子衰减器电路 (Electronics Attenuato

电子衰减器电路 (Electronics Attenuator)

两个低电压，低功耗齐纳基准源是用来控制电子的音频信号的水平。衰减范围是从6五十八分贝一个从0.042输入电流从2.7七十七毫安相应的控制电压至7.5V。如果控制电压限制至5V，衰减是控制电流为2mA约30分贝。 Thi 这不是一个音响 ， 但可能出现衰减器作为一个通用的有用的音频衰减。

Two low voltage, low power zeners are used to control electronically the level of an audio signal. The attenuation range is from 6 to 58dB for an input current from 0.042 to 77 mA corresponding to a control voltage from 2.7 to 7.5V. If control voltage is limited to 5V, the attenuation is around 30dB at a control current of 2mA. This is not an HiFi attenuator but might come useful as a general purpose audio attenuator.