PULSE GENERATING CIRCUIT, CONTROL METHOD FOR PULSE GENERATING CIRCUIT, TRANSMITTER, AND ELECTRONIC DEVICE

摘要

PROBLEM TO BE SOLVED: To prolong a service life of a battery by making a battery for small capacity and low load available.;SOLUTION: The invention relates to a pulse generating circuit 1 including: a boosting circuit 100 which boosts power source voltage VDD supplied from an external primary battery PU and produces boosted voltage PV higher than the power source voltage VDD; a secondary battery C4 to be charged with the boosted voltage PV; a pulse circuit 200 which generates a pulse PS; a switch element SW8 connected between the secondary battery C4 and the pulse circuit 200; and a control circuit 300 which makes the boosting circuit 100 operate and the switch element SW8 off during a charging period, and makes the boosting circuit 100 off and the switch element SW8 on during a discharging period.;COPYRIGHT: (C)2009,JPO&INPIT