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 LED is optically coupled to the LDR1 sensor to provide negative feedback to the circuit and...
This circuit is a switched DC / DC converter that converts +15 V and +27 V with a maximum current in...
This timer with field effect transistors was obtained from Fairchild documentation. The times...