CURRENT source with controlled power supply voltage

Jaroslaw Sikora

doi:10.1117/12.2031302

25 July 2013 CURRENT source with controlled power supply voltage

Jaroslaw Sikora

Proceedings Volume 8902, Electron Technology Conference 2013; 89020Y (2013) https://doi.org/10.1117/12.2031302
Event: Electron Technology Conference 2013, 2013, Ryn, Poland

Abstract

This work presents examination of a novel current source circuit. The implementation of a linear combination of two reference voltages and a voltage drop across a load resistor to control a power supply voltage in a typical bipolar current source allows limitation of the correlation between the output stage collector-emitter voltage and the load current, resistance. The first reference voltage, V_ref1, controls the load current, while the second reference voltage, V_ref2, controls the output stage emitter-collector voltage. Consequently, this voltage is independent of the load current and resistance, which is particularly important for reducing the influence of Early effect. The presented circuit is characterized by a simple design and relatively low cost.

Citation Download Citation

Jaroslaw Sikora "CURRENT source with controlled power supply voltage", Proc. SPIE 8902, Electron Technology Conference 2013, 89020Y (25 July 2013); https://doi.org/10.1117/12.2031302

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