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20 NEW CIRCUIT OPERATION (Base Unit)
20.1. Power Supply Circuit
As indicated in the illustration, the various voltages are supplied constantly to their respective blocks. A time constant is used to
compensate for momentary dropouts in the AC power supply.
compensate for momentary dropouts in the AC power supply.
20.2. Charge Circuit
The voltage from the AC is supplied to the main charge circuits. Ultra charge (130 mA) of maximum 4 hours is started soon after
the Handset is placed on the base unit. Then it changes to normal charge (53 mA on the average) of 10 hours. Finally the mode
changes to trickle charge (15 mA) to prevent overcharging.
the Handset is placed on the base unit. Then it changes to normal charge (53 mA on the average) of 10 hours. Finally the mode
changes to trickle charge (15 mA) to prevent overcharging.
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KX-TC1800B
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