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Chapter 18

Q. 18.8

If the current source of Fig. 18-28 has R = 10 kΩ, v_{in} = 1 \ V, and V_{CC} = 15 \ V, what is the output current? What is the maximum load resistance that can be used with this circuit if v_{in} can be as large as 10 V?

18-28

Step-by-Step

Verified Solution

With the equations of Fig. 18-28, the output current is:

i_{out}= \frac{1 \ V }{10 \ k\Omega }= 0.1 mA

The maximum load resistance is:

R_{L(max)} = (10 kΩ) \left(\frac{15 \ V }{10 \ V }-1\right) = 5 \ k\Omega