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 circuit was originally suggested by Texas Instruments, as it is based on one of its...
This circuit was found in a Linear Technology manual from the 1990s. The component is the LTC1453...
This flip-flop circuit with general purpose transistors was found in American documentation from...