This high quality circuit with complementary symmetry was found in an Electronics World of 1966. It can be made with modern transistors like the BD or TIP series.
This control for motors up to 1 A was found in a Siliconix documentation using its own component....
This 2.2 Hz to 24 kHz filter was found in the February 1995 issue of Electronics Now magazine. The circuit...
This circuit compares the voltages of the two inputs giving as output 0 or 1 according to the...