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Showed how to find the operating point of a bipolar silicon transistor in a circuit with an OE. Indicated that a bipolar transistor is a current element. Considered the input I-V characteristic, output I-V characteristic, load characteristic and set the operating point. Graphically found the bias voltage on the base and the current for this point. Determined the range of the input voltage of the source. Determined the swing of the output voltage and the collector current. Determined the quiescent current of the transistor in mode A and the voltage on the collector.