This circuit is from 1999 documentation. The integrated circuit used is not very common today. Both transistors are used if the motor current is greater than 500 mA.
The critical component of this project found in a 1993 publication is the LM12 integrated circuit....
We found this circuit in an old publication dealing with operational amplifiers. The circuit uses...
Within a range of values, this circuit converts input voltages into corresponding currents. The...