Optimum Noise Performance of Transistor Input Circuits
نویسنده
چکیده
A class of transistor amplifiers is described in which high input impedance is achieved with good bias stability. Input impedances of the order of _megohms shunted by one or two micramicrofarads are easily realized with simple circuits, and higher impedances may be obtained with more elaborate circuitry. Other important properties are that input shunt capacitance can be almost completely eliminated, the voltage gain is stabilized, and the output impedance is low. Typical practical measurements are given, and various illustrative circuits are shown for both ac and de amplifiers. Page 1
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