Found in documentation from the 1980s, this circuit uses components from that time. The circuit is used in process control. The power supply is double.
Found in a 1968 documentation, this small amplifier was very popular at the time being used in...
This simple audio signal tracer or follower can be made with a BC548 instead of the original...
According to the 1990 documentation in which we found this circuit, the chickens must be fed at...