. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. THE EARTHED EMITTER TRANSISTOR Now if this were all we had to do to specify the transistor, the subject would be no more difficult than valves; for we have two parameters, R^^ which corresponds to r^ of a pentode, and A, which corresponds (but not dimensionally) to g^. Unfortunately we have to discover what is happening at the input circuit. We keep the investigation symmetrical if we set up. Figure Figure , seeing how the base voltage and current are related to the collector curr
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. THE EARTHED EMITTER TRANSISTOR Now if this were all we had to do to specify the transistor, the subject would be no more difficult than valves; for we have two parameters, R^^ which corresponds to r^ of a pentode, and A, which corresponds (but not dimensionally) to g^. Unfortunately we have to discover what is happening at the input circuit. We keep the investigation symmetrical if we set up. Figure Figure , seeing how the base voltage and current are related to the collector current. On plotting the results we find a characteristic like Figure When /<. = 0 we have merely the base-emitter junction as a diode biased in the forward direction; voltage across it is low, and the resistance is represented by the reciprocal of the characteristic slope, about 1 YD. in the small transistor we are considering. The effect of allowing. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Peter Eden Kirwan. New York, Academic Press
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