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Circuit Operation:
When the Battery is inserted into the unit, Power Down signal and Reset signal are generated
by IC205, IC203, Q212 and Q205 as shown below. The Reset signal will be generated when
Charge-ON.
18.4. Charge Circuit
Ni-MH battery is connected to (BATT+, BATT-). When the handset is put on the cradle of the
base unit, the power is supplied from CHARGE1 and CHARGE2 terminals to charge the battery.
Q207 detects the voltage of CHARGE1 and CHARGE2 terminals, then the handset makes ID
code setting (*) with the base unit.
18.5. Ringer and Handset SP-Phone
DSP (29-31)
SP/RINGER
52
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