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by tempneff
January 10th, 2018, 12:53 pm
Forum: Low Current Measurements
Topic: Psuedo AC current measurement
Replies: 2
Views: 7913

Re: Psuedo AC current measurement

Hey Dave, thanks for answering. The graph above was AC voltage measured by a 500kS/sec DAQ unit. What I really want to know is how the Keithley multimeter 2000-20 arrives at its display number. Is it also integrating under the curve? It doesn't make sense to me why AC (0.94 amps) and DC (1.01 amps) ...
by tempneff
January 10th, 2018, 11:01 am
Forum: Low Current Measurements
Topic: Psuedo AC current measurement
Replies: 2
Views: 7913

Psuedo AC current measurement

I hoped to use a Keithley 2400 source meter to generate a ~120Hz AC signal by outputting a 2-point sweep from 1A to -1A on an infinite trigger. The waveform image is attached. The end goal is a resistance measurement for bulk semiconductor materials, we prefer AC measurement to avoid thermoelectric ...

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