Power Supply Circuit - Panasonic KX-TG2257BXS Service Manual

KX-TG2257BXS

15.3. Power Supply Circuit

Function:
The power supply voltage from AC adaptor is converted to the desired voltage of each block.
Circuit Operation:
This unit supplies the voltage to each block as shown below.
15.3.1. Charge Circuit
The voltage from the AC is supplied to the main charge circuits. Normal charge (90 mA) of maximum 20-hours is started soon after
the Handset is placed on the base unit. Then it changes to trickle charge (20 mA on the average) to prevent from overcharging.
Normal charge : Q150 is ON
Trickle charge : Q150 is OFF
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