This circuit appeared in Radio Elecronics magazine in 1968. The operating circuit is a general-purpose type at the time and the power supply must be symmetrical.
We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a...
This circuit uses a PNP transistor to modulate a low power infrared LED. Observe the polarity of...
The maximum frequency of this circuit depends on the operational, reaching a few hundred...