This high-precision circuit was found in documentation from the 1990s. The integrated circuit is an LM111 or another in the series. The circuit has TTL output and can function as a shield.
This symmetrical power supply provides a voltage of 12 V under a maximum current of 15 mA. The...
This circuit was found in an English magazine from 1978, but it can be easily assembled today,...
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...