Purchase Solution

PLC and Circuit Diagrams

Not what you're looking for?

Ask Custom Question

(d) The circuit shown in FIGURE 3 is part of the interface of a relay output module. Ib is 1 mA and Vcc is 9 V. The relay requires a minimum of 50 mA to energise.
Complete the values of the assumptions listed below in order to calculate:

• Voltage across R1 • value of Ri • voltage across the relay coil • voltage across R2 • value of R2 • collector of current

Logic '1' = V Logic '0' = V
Transistor forward current gain h_i_e = LED current = 10 mA
LED voltage drop at 10 mA = V Base/emitter voltage = V Collector emitter voltage when transistor is on = 1 V

Purchase this Solution

Solution Summary

This posting contains the solution to the given problems.

Purchase this Solution

Free BrainMass Quizzes
Architectural History

This quiz is intended to test the basics of History of Architecture- foundation for all architectural courses.