This circuit is from an American publication of the 80's. It makes use of components of the time. However, the circuit is the basis for a modern shield application since the input is TTL.
This circuit can be used as a shield for microcontrollers. The circuit is from American...
This car battery power supply was found in the June 1990 issue of Radio Electronics magazine....
August 2017 - STMicroelectronics' BlueCoin development environment is available at Mouser...