Page 34

CHAP. 2]

CIRCUIT CONCEPTS

23

Fig. 2-25

Fig. 2-26

2.39

The diode of Example 2.4 operates within the range 10 < i < 20 mA. Within that range, approximate its terminal characteristic by a straight line i ¼ v þ , by specifying  and . Ans. i ¼ 630 v  4407 mA, where v is in V

2.40

The diode of Example 2.4 operates within the range of 20 < i < 40 mA. Within that range, approximate its terminal characteristic by a straight line connecting the two operating limits. Ans. i ¼ 993:33 v  702:3 mA, where v is in V

2.41

Within the operating range of 20 < i < 40 mA, model the diode of Example 2.4 by a resistor R in series with a voltage source V such that the model matches exactly with the diode performance at 0.72 and 0.75 V. Find R and V. Ans. R ¼ 1:007 ; V ¼ 707 mV

Mahmood_Nahvi_eBook_Schaum_s_Outlines_Theory_An  
Mahmood_Nahvi_eBook_Schaum_s_Outlines_Theory_An  
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