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 transmitter for the 2-meter range with a power of 1.5 W was found in a magazine 73 for radio...
The configuration shown in the figure is one of the most traditional when it is desired to produce...
This circuit operates according to the same principle as the previous one, but it has a difference in...