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An attenuator is an Electronic device that reduces the Amplitude or Power of a Signal without appreciably Distorting its Waveform . Attenuators are usually passive devices made from resistors. The degree of Attenuation may be fixed, continuously adjustable, or incrementally adjustable. Fixed Electrical attenuators are often called pads, especially in Telephony . The Input and Output Impedance s of an electrical attenuator are usually matched to the impedances of the signal source and Load , respectively. |
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