Using the characteristics of Fig. 3.23c, determine the level of βdc at IC = 10 mA at the t...

Using the characteristics of Fig. 3.23c, determine the level of β_dc at I_C = 10 mA at the three levels of temperature appearing in the figure. Is the change significant for the specified temperature range? Is it an element to be concerned about in the design process?

FIG. 3.23c STATIC CHARACTERISTICS