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Published byKellie Moore Modified over 9 years ago
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Superheterodyne NMR spectrometer
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Hetero means “other” Example: A radio station is transmitting on 300 kHz and the oscillating receiver was set to 400 kHz, the station would be heard not only at the original 300 kHz, but also at 100 kHz and 700 kHz.
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Labview controller - YB
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probe section
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cap and coil selection
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coil – large L
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impedance matching
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Impedance matching – circuit A
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isolation – hybrid tee
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isolation – quarter waves
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RF amplifier stage – miteq fast recovery
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receiver section
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generator and receiver – side by side
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IF (audio) amplifier stage – LM386
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DAQ - YB
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external https://github.com/Altoidnerd/NMR-Tank- Circuits/blob/master/matching-A-min https://github.com/Altoidnerd/NMR-Tank- Circuits/blob/master/matching-A-min https://apps.ufl.edu/Citrix/XenAppEXT/auth/login.aspx http://www.phys.ufl.edu/~majewski/nqr/nqr-combined.pdf
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