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A transistorized NMR spectrometer has been developed which affords sensitivity comparable to that of the best vacuum tube spectrometers. This spectrometer has operated with sample coil voltages below 10 mV peak-to-peak. Frequency modulation is used to facilitate modulation at frequencies high enough to minimize effects of transistor 1/f noise.
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Blankenburg et al. (1966) studied this question.
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