Both the operational amplifier and the diodes admit equivalents in this circuit suggested by National Semiconductor. The power source must be symmetrical, and the circuit curve resembles an ideal diode.
This commercial medium and short-wave radio was manufactured in Japan in the 60s. The circuit has...
We found this circuit in a 1992 documentation. It can still be easily assembled today, as the...
This circuit was found in an American documentation of the 90s. Optical resources with the LDR as a...