This circuit was obtained from Dutch documentation from 1964. The components are of the time, but current equivalents such as BC548 to BC108 can be used.
This circuit can be used as a shield based on 555. The calculation of the timing network is done...
The presented centigrade thermometer shown uses a National Semiconductor sensor. The operational...
This circuit is suggested by an English publication from 1980. It is an RF detector that uses a...