a. Using the characteristics of Fig. 3.23e , determine ton and toff at a current of 2 mA. Note the use of log scales and the possible need to refer to Section 9.2 .
b. Repeat part (a) at a current of 10 mA. How have ton and toff changed with the increase in collector current?
c. For parts (a) and (b), sketch the pulse waveform of Fig. 4.91 and compare results.

Fig. 3.23

Fig. 4.91

Transcribed Image Text:

Figure 4- Switching Times 200 100 70 50 30 20 Vec-3 V Iella- 10 7.0 VEn -0.5 V 10.0 5.0 1.0 10 20 30 so ,Collector curent (mA) 20 3.0 5.0 100 200 (su) aI