DIRECT-CURRENT VOLTAGE TRANSDUCER, MAGNETIC FIELD GENERATOR AND DETECTOR EQUIPPED THEREWITH, AND UNDERGROUND EXPLORATION SYSTEM EQUIPPED THEREWITH

• Main Authors: HAYASHIDA TAKESHI, KAIEDA SHUJI
• Format: Patent
• Language: English
• Published: 24.04.2008
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETECTING MASSES OR OBJECTS; ELECTRICITY; GENERATION; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a direct-current voltage transducer, wherein influence on a magnetic field as an object to be detected is suppressed and the accuracy of magnetic field detection can be enhanced, a magnetic field generator and a magnetic field detector equipped with it, and to provide an underground exploration system equipped with them. SOLUTION: During a charging period, since forward bias voltage is applied to a diode D12, a charging current Ic1 flows from a positive supply line LP to a negative supply line LN via the diode D12, and a capacitor C12 is charged. During discharge period, a diode D11 is activated and brought into on state. For this reason, a potential, obtained by superimposing the charging voltage of the capacitor C12 on the potential of the positive supply line LP, appears at an output node OUT1. Then, a discharging current Id1, corresponding to the potential obtained by superimposing the charging voltage of the capacitor C12 on the potential of the positive supply line LP, is supplied to the direct-current voltage transducer. COPYRIGHT: (C)2008,JPO&INPIT