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.
This circuit was found in an American publication from the 60's. The transistor is from that...
The purpose of this circuit, which we find in an old American documentation, is to allow the...
This receiver was found in an article in Electronics Now magazine in March 1994. The coils are...