This receiver uses old transistors that are equivalent to BC548 and BC558. The photo diode is of any type. The receiver can be used on a highly sensitive audio link.
This 13.8 V power supply with 10 A output is intended to supply power to automotive power...
With the circuit shown in the figure, we have a logic signal to activate a calling device when...
We found this circuit in an American documentation from the 90's. The circuit can be assembled with a...