| 摘要 |
Improved circuit with multiple input stages, whose outputs are connected in such a way as to apply differential currents to a load. When a bias current flows through a selected input stage 10A, 38A, the differential currents result from a differential signal applied to the selected stage; each input stage comprises two transistors 56, 66 coupled by their emitters 62, 72; variable resistors 64, 74 are connected in series with the emitters of the transistors and the bias current is directly proportional to the absolute temperature; the resistors can be varied in such a way that the suppression voltages of the input stages are equal to zero at practically all temperatures. Application especially to electronic control systems for signal processing. <IMAGE>
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