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The voltage from the AC is supplied to the main charge circuits. Normal charge (290 mA) of
maximum 6-hours is started soon after the Handset is placed on the base unit. Then it changes
to trickle charge (15 mA on the average) to prevent from overcharging.
Normal charge : Q150 is ON
Trickle charge : Q150 is OFF
16.4. Reset Circuit
Function:
This circuit is used to initialize the microcomputer when it incorporates an AC adaptor.
Circuit Operation:
When the AC Adaptor is inserted into the unit, then the voltage is shifted by IC100, D101 and
power is supplied to the DSP.
The set can operate beyond point
in the circuit voltage diagram.
47
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