The BJT in the Circuit in Fig $I_{S}=$ $10^{-15} \mathrm{~A}$ At Room Temperature

The BJT in the circuit in Fig. 6.6.1 has $I_{S}=$ $10^{-15} \mathrm{~A}$ at room temperature.
(a) Find $V_{O}$ at room temperature where $V_{T}$ is $25 \mathrm{mV}$ .
(b) If the temperature increases by $50^{\circ} \mathrm{C}$ , what will $V_{O}$ become?
(c) If, alternatively, the temperature decreases by $50^{\circ} \mathrm{C}$ , what will $V_{O}$ become?

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Figure 6.6.1
(a)
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