This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994. Some of the components used are not easy to obtain, but equivalents can be used.
Here is a very simple robot circuit that follows the line driven by a small 3 V sevomotor that...
This circuit, which provides a power of up to 3.5 W, can be supplied with voltages from 9 to 14 V....
This circuit transmits the signal taken from a telephone line to a receiver placed nearby (up to a...