A charger malfunction prevention device using a call mode entry control signal of a cellular phone

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to charging a rapid charger for a cellular phone and supplying power to a connected handset. In particular, when power is supplied to a handset during charging, Thereby preventing a malfunction in which the charging state is switched from rapid charging to trickle charge.;The means for achieving the above object of the present invention is to provide a signal required for the cellular phone to enter the communication mode, that is, a carrier-on ) Signal to the charger through one line added to the existing curled cord 4, and in response to the control means signal, the switch RTI temporarily stops the oscillating portion of the charger charge control portion to detect and compare the battery of the voltage detecting portion And stopping the battery monitering and maintaining the constant constant current so as to prevent the malfunctioning of switching from trickle charge to trickle charge rapidly.