This circuit was suggested by Texas Instruments in a 1968 publication. The transistors are of the time, and modern equivalents can be used.
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...