This circuit is for old telephones with analog lines. It was found in the May 1988 Radio Electronics magazine. The circuit is powered by the line signal voltaje.
This low-power intercom can be powered by solar cells. The circuit is two-way, with an integrated of the...
The advantage of this circuit lies in the fact that it does not need a negative source to generate...
The circuit shown in the figure can be used on a data transfer bus using an appropriate family...