CHARGE EXTRACTION CIRCUIT

• Main Author: KISHI DAIKI
• Format: Patent
• Language: English
• Published: 24.02.2014
• 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; BASIC ELECTRONIC CIRCUITRY; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PULSE TECHNIQUE

PROBLEM TO BE SOLVED: To provide a charge extraction circuit in which increase of a potential based on capacitive coupling is suppressed.SOLUTION: A charge extraction circuit 1 comprises: a switching element 10 including a terminal 10a electrically connected between an internal circuit 6 and a switching element 5 and a terminal 10b electrically connected to a ground, the internal circuit 6 being driven by a power supply voltage Voutputted from a power supply section 3 and the switching element 5 electrically connecting the power supply section 3 and the internal circuit 6 in an ON state; and a control section 15 which electrically connects the switching element 5 and the ground by outputting to a terminal 10c of the switching element 10 a first signal Sfor bringing the switching element 10 into an ON state on the basis of a first voltage Vuntil reaching a constant voltage Voutputted from a regulator circuit 4 that generates the constant voltage V, and allowing charges to flow to the ground, the charges being based on capacitive coupling in a node 110 to which the terminal 10a between the switching element 5 and the internal circuit 6 is connected.