Improving the spectral composition of PWM voltage in devices for nuclear magnetic resonance
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Abstract
The features of the formation of the probe voltage for nuclear magnetic resonance are considered. Ways to obtain this voltage are analyzed, shown their advantages and disadvantages. On the basis of mathematical calculations concluded that modulated probe voltage can be receive by modulation in three harmonics. It is shown that the most effective to use pulse width modulation and key changes in the inverter to solve the problem.
References. 5, Fig. 4.
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