Charge Circuit; Ringer And Handset Sp-Phone - Panasonic KX-TG2338BXS Service Manual

KX-TG2338BXS / KX-TGA236BXS

19.3. Charge Circuit

When the handset is put on the cradle of the Base unit, the power is supplied from CHARGE2 and CHARGE1 terminals to
charge the battery via D205 (D207), R268, Q212. The voltage between CHARGE2 and CHARGE1 flows D213 -> R248 -> Q207
-> pin80 of IC201, where the charge is detected. Then IC201 calculates the battery consumption amount from the previous
charge, and it controls Q212/Q210/Q209 by pin82 of IC201 until charging is complete. When charging is complete, the control
pattern is switched to Trickle charging form from Normal charging form.

19.4. Ringer and Handset SP-Phone

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