Found in the February 1997 Electronics Now magazine, this circuit controls motors according to the transistor used. For the transistor indicated, the maximum current is 200 mA.
This circuit, obtained in an old publication, causes a second telephone bell to be played in a...
This circuit is from the 1982 SGS Linear Circuits Manual. The circuit provides currents from 35 mA...
This circuit generates pulses of up to 60 seconds with a short reset time. The circuit is from an...