| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic circuit for a superconducting quantum interference device (SQUID), which prevents an offset from occurring due to changes in ambient temperature and the like. <P>SOLUTION: The electronic circuit 1 for the SQUID comprises; a preamplifier 10 for amplifying a signal from the SQUID 2; a reference preamplifier 11; and a differential device 13 for receiving outputs from the reference preamplifier 11 and the preamplifier 10 which amplifies the signal. The offset of the preamplifier 10 which amplifies the signal from the SQUID 2 is reversed with the offset of the reference preamplifier 11. An rf-SQUID other than a dc-SQUID can be used as the SQUID 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
