This small audio amplifier circuit in complementary symmetry was found in the 1974 Mullard Databook. The output pair can also be the BD135 and 136.
This configuration is very traditional, appearing in several publications around the world. This...
This is the normal configuration for dividing a TTL signal by 7. The 7490 can divide by other...
Found in a 1967 Electronics World, this oscillator changes its tone when objects move in their...