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428-PROG Programmable Current Amplifier
The Model 428-PROG Programmable Current
Amplifier converts fast, small currents to a volt-
age, which can be easily digitized or displayed
by an oscilloscope, waveform analyzer, or data
acquisition system. It uses a sophisticated "feed-
back current" circuit to achieve both fast rise
times and sub-picoamp noise. The gain of the
Model 428-PROG is adjustable in decade incre-
ments from 103V/A to 1011V/A, with selectable rise
Converts small, Side currents to a voltage
times from 2