This Pierce oscillator was found in American documentation from the 1980s. Transistors support modern equivalents.
Rapid Prototyping Boards for 32-bit Applications Include Peripherals, Easy-to-use Interface and...
This control for low current motors (up to about 100 mA) was found in a 1983 publication. The...
We give in the figure a different application of 4013, which can also be used as monostable. In common...