This circuit was found in a documentation from 1948. There are 5 valves with push-pull output. The source uses a transformer, and the indicated application is with turntables.
This circuit was obtained in a 1988 publication, but it can be assembled very easily today, as all...
This simple LED effect is from a 1988 documentation, but it can be easily assembled today, despite...
This car alternator voltage regulator was found in a former General Electric publication. It maintains...