Charge Circuit - Panasonic KX-TG2359BXB Service Manual

KX-TG2359BXB

17.3.1. Charge Circuit

The voltage from the AC is supplied to the charge circuits. Normal charge of maximum 6-hours is started soon after the Handset
is placed on the base unit. Then it changes to Trickle charge to prevent from overcharging.
Q381 and Q382 detect the ON-HOOK state (Handset is placed on base unit).
Q350 and Q351 control the charge current.
Q352 sends a signal to the handset for about 5 seconds soon after the handset is placed on the base unit.
This signal tells that the handset is been charging on the base unit or the optional charger.
When the signal is received: charging on the base unit
No signal: charging on the optional charger.
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