This circuit was found in a Popular Electronics from the 90's. The transistors are general-purpose types and the loaded load depends on the voltage and must have a maximum current of 100 mA.
This circuit can be used with older tape player systems to recover media converting for digital...
We found this circuit in an old documentation, using an operational of the time. The circuit...
This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is...