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At least 19 records

Field-effect transistor improves electrometer amplifier

An electrometer amplifier uses a field effect transistor to measure currents of low amperage. The circuit, developed as an ac amplifier, is used with an external filter which limits bandwidth to achieve optimum noise performance.

Munoz, R.↗

A Field-Effect Transistor (FET) model for ASAP

The derivation of the circuitry of a field effect transistor (FET) model, the procedure for adapting the model to automated statistical analysis program (ASAP), and the results of applying ASAP on this model are described.

Ming, L.↗

Put FETs to Work in Electrometers

Field-effect transistors, with their high impedance and low noise, can effectively measure very low currents. To bring the FET up to electrometer standards (so that it can measure currents of, say, 10 (sup -13) amp) the designer must know where the noise is and what to do about it.

ELECTROMETER↗