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This paper presents a concept of a multiple channel picoammeter suitable for operation at a high voltage. To ensure floating operation, 1kHz readout rate and low battery usage, the picoammeter employs an optical fibre for data transmission. The analogue conditioning section consists of a transimpedance amplifier that is connected to a 16 bit ΣΔ ADC which is integrated into the microcontroller. Simultaneous...
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