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 was found in a Mullard transistor manual from 1960. Note the symmetrical power...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
I found this little signaling transmitter in old American documentation. The circuit has a good...