Created by StemPy LabA transistor works as a switch with the load in the collector lead. A student applies a high voltage to the base through a resistor, so that the base current is more than the least current for saturation. What does she find at the output, taken across the transistor from the collector to the emitter?
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← A transistor has a ratio α = 0.975 of the collector current to the emitter current. What is its current gain β in the common-emitter circuit?A student builds a pre-amplifier for a small sensor with one transistor of current gain 75. The load in the collector lead is 2.7 kΩ, and she measures an input resistance of 650 Ω at the base. By what factor does the circuit multiply a small signal voltage? Give the size only. →
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