4:00 PM - 4:15 PM [7p-A411-12] Development of a Portable Spectrometer for Nuclear Quadrupole Resonance Using a Class-D Amplifier with Dual Power Supplies Yui Otagaki1, 〇(B)Kohei Suzaki1, Yuji Miyato1, Hideo Sato-Akaba1 (1.Osaka Univ.)