This 9 V battery eliminator was found in Radio Electronics magazine from June 1966. The transistor is of medium power and must be equipped with a small heat sink.
We found this circuit in an English publication from 1977. The circuit is suitable for 9 V loads...
This circuit was obtained in a 80s American documentation for radio amateurs. The circuit produces a...
This circuit measures temperatures from +5 to + 300º F using a sensor from National Semiconductor not very...