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.
This relay time delay circuit was found in the October 1993 issue of Electronics Now magazine. The timing...
This low noise, low frequency instrumentation circuit was found in a 1976 NASA circuit manual. The...
Hig stability is the main feature of the 10 V regulator circuit shown in the figure and suggested by...