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Search results with tag "Variable attenuator"
Automatic Gain Control (AGC) in Receivers - QSL.net
www.qsl.net• A simple method of gain control would involve the use of a variable attenuator between the input and the first active stage. Such an attenuator, however, would decrease the signal level, but it would also reduce the S/N of any but the weakest acceptable signal. • A typical AGC loop circuit is shown in the picture below.
AN-32 FET Circuit Applications - TI.com
www.ti.comTL/H/6791–12 TL/H/6791–13 Variable Attenuator The 2N3685 acts as a voltage variable resistor with an RDS(ON) of 800X max. The 2N3685 JFET will have linear resistance over several decades of resistance providing an