. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography R^-Vc. Ra Vr 1. Voltage-controllod r«ai«tance. Unused half of FET O, can function as voltage- controlled resistor in external circuits. Re, is inversely proportional to control voltage in both circuits. V^ values are negative for n- channel FETs, positive for p-channel FETs. 2. Direct proportional control. R^, varies linearly with V^ inboih circuits. If V^ exceeds V,„ Of breakdown voltages of FET in either figure, a resistor should be inserted betwe
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography R^-Vc. Ra Vr 1. Voltage-controllod r«ai«tance. Unused half of FET O, can function as voltage- controlled resistor in external circuits. Re, is inversely proportional to control voltage in both circuits. V^ values are negative for n- channel FETs, positive for p-channel FETs. 2. Direct proportional control. R^, varies linearly with V^ inboih circuits. If V^ exceeds V,„ Of breakdown voltages of FET in either figure, a resistor should be inserted between output of operational amplifier and gate of FET to prevent burnout. tance. No stability problems are encountered because the PET introduces negligible phase shift in bandpass frequencies of the op amp. Optimal results are obtained. of course, with FETs formed on a common substrate, and if desired, p-channel devices may be used for positive control voltages. D 804. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Meteorological Laboratories; Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories; Environmental Research Laboratories (U. S. ). Washington, D. C. : U. S. Dept. of Commerce, Environmental Science Services Administration, Research Laboratories : For sale by Supt. of Docs. U. S. G. P. O.
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