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KX-TG6572C/KX-TG6572R/KX-TGA653C/KX-TGA653R
4.7.3.
Charge Circuit
Circuit Operation:
When charging the handset on the Base Unit, the charge current is as follows;
DC+(6.5 V)
→
F301
→
R371
→
R372
→
(Base)
→
(Handset)
→
Q4
→
D7
→
F1
→
... Battery...
BATTERY-
→
R45
→
GND
→
CHARGE-(Handset)
→
CHARGE-(Base)
→
GND
→
DC-(GND)
In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q9 of Handset.
Refer to Fig.101 in
Power Supply Circuit/Reset Circuit
(P.12).
4.7.4.
Battery Low/Power Down Detector
Circuit Operation:
“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;
• Battery Low
Battery voltage: V(Batt) 2.35 V ± 50 mV
The BBIC detects this level and "
" starts flashing.
• Power Down
Battery voltage: V(Batt) 2.0 V ± 50 mV
The BBIC detects this level and power down.
4.7.5.
Speakerphone
The hands-free loudspeaker at SP+ and SP- is used to generate the ring alarm.
Содержание KX-TG6572C
Страница 2: ...2 KX TG6572C KX TG6572R KX TGA653C KX TGA653R ...
Страница 23: ...23 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 4 9 Signal Route ...
Страница 24: ...24 KX TG6572C KX TG6572R KX TGA653C KX TGA653R RF part signal route ...
Страница 26: ...26 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 8 Test Mode 8 1 Engineering Mode 8 1 1 Base Unit ...
Страница 28: ...28 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 8 1 2 Handset ...
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Страница 47: ...47 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 11 1 2 Handset ...
Страница 48: ...48 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 11 1 3 Charger Unit ...
Страница 69: ...69 KX TG6572C KX TG6572R KX TGA653C KX TGA653R Memo ...
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Страница 83: ...83 KX TG6572C KX TG6572R KX TGA653C KX TGA653R 16 4 Accessories and Packing Materials P2 A3 A2 P2 A4 P1 A1 A1 ...
Страница 88: ...88 KX TG6572C KX TG6572R KX TGA653C KX TGA653R T I KXTG6572C KXTG6572R KXTGA653C KXTGA653R ...