This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and the power transistor must be equipped with heat radiators.
This circuit is from the manual of the components used, from the 80s. The circuit is valid for...
This circuit from the 1980s uses an operational amplifier that is uncommon today. The circuit can...
This "debouncer" was found in Popular Electronics, using TTL technology. For this reason, it can be...