Use of the Silicon Resistor in the d.c. Stabilization of Transistor Circuits

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IT is well known that changes in the d.c. characteristics of transistor amplifiers with temperature are particularly severe, and tend to limit the range over which these devices can operate. The d.c. parameters, the changes of which are of interest, are the collector-emitter leakage current (Ico′), the d.c. current gain (α′) and the base-emitter input impedance, this last producing a change in the base-emitter voltage. Up to the present, stabilization has either been by minimizing these effects by suitable circuit design, or by the use of thermistors and non-linear elements in the base circuit. These have the disadvantage in some cases, of higher power consumption, and thus loss of the inherent high efficiency of the transistor amplifier, and limited range of stability.

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ZAKRZEWSKI, J., MEHRTENS, D. Use of the Silicon Resistor in the d.c. Stabilization of Transistor Circuits. Nature 184, 811–812 (1959) doi:10.1038/184811b0

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