E)
This audio filter was found in the August 1993 issue of Radio Electronics magazine. It cuts low and high frequencies corresponding to rumble and scratch noises that occur on turntables.
In a voltage follower the voltage gain is unity. The input impedance is high and the output...
This circuit was found in the January 1995 Electronics Now magazine. The source must be dual, and...
This circuit is intended for use with common oscilloscopes having been found in documentation on...