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6.39 A particular pnp transistor operating at an emitter current of 0.5 mA at 20°C has an emitter–base voltage of 692 mV.
(a) What does vEB become if the junction temperature rises to 50°C?
(b) If the transistor is operated at a fixed emitter–base voltage of 700 mV, what emitter current flows at 20°C? At 50°C?
−632 mV; (b) 0.69 mA, 5.77 mA
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