Indicated for stereophonic sound applications, this circuit was found in the April 1983 issue of Radio Electronics magazine. The indicated circuit is the NE570, launched at the time.
Using the LM3914, this circuit is suitable for benchtop experiments. It was found in the March 1995...
This very sensitive circuit works almost like an electroscope. The FET can be the BF245 and it...
This 50's receiver includes an amplifier stage with a transistor complementary to the CK722, in...