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 interesting circuit was found in a 2006 publication. It is a timer that controls the engine...
This circuit should be placed between a turntable and recorder or playback media from the input to...
In this circuit we have the way to use common diodes to obtain low regulated voltages in a single...