This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not given and the transistors are of the time. The circuit provides a power of a few watts.
This circuit includes an AD converter for interfacing with a microprocessor and can be used as a...
This watch was found in 2001 documentation. The watch is powered by 4 batteries. To save energy, the...
Found in ancient American documentation, this circuit uses an operational amplifier of the time,...