Test Procedure - Samsung SCH-1000 Service Manual

Circuit Description
4-7 Travel Charger
4-7-1 Description
This document defines the functional
requirements of SCH-110TC, SCH-1000TC,
designed as a Ni-MH battery charger for SCH-110,
SCH-1000.
This charger can be used with indoor AC input
directly.
One LED indicates charging status of battery.
Charging current mode is constant current mode
controled.
4-7-2 Scope
This specification is applied to every unit of model
no. SCH-110TC, SCH-1000TC, revision level 0.
4-7-3 Reference
REFER TO TEST PROCEDURE
4-7-4 Electrical Characteristic
AC INPUT
- AC INPUT VOLTAGE : 120Vac nominal
- AC INPUT VOLTAGE R A N G E : 90-140Vac
- AC INPUT CURRENT : 0.3A max.
- AC INPUT FREQUENCY : 60°æ3 Hz
OUTPUT
- BATTERY CHARGING VOLTAGE : 4.8 ~ 8.0
VDC nominal
- BATTERY CHARGING CURRENT RANGE
under C-C Mode : 350°æ20mA
- CHARGING CURRENT SETTING : 350°æ
10mA with 120Vac input and 18•ÿ load
resistance.
- BATTERY CHARGING CURRENT RANGE
under C-C MODE :
¶USTANDARD BATTERY : 350°æ20mA
¶UEXTENDED BATTERY : 350°æ20mA
4-14
- EFFICIENCY : 50% min.
- RIPPLE & NOISE
¶URIPPLE & NOISE LIMLT : 100mVp-p max.
¶UTEST CONDITION : At output contact with
20M Hz bandwidth using Battery load.
SAFETY REQUIREMENTS
- UL1310 APPROVAL
- FCC CLASS-B MEET
- PRIMARY-SECONDARY ISOLATION
¶UWithstanding voltage : 150 Vac min for 1
minute or 1800 Vac min for 1 second.
¶UCut-Off Current : 10mA
BATTERY IDENTIFICATION
BATTERY C H A R G I N G
TYPE C U R R E N T
EXTENDED BAT.
350 °æ 20mA
STANDARD BAT.
LED INDICATION
- CHARGING STATUS
- Red : Charging
ENVIRONMENTAL
- UNIT OPERATING TEMPERATURE RANGE :
0 to 40 °C
- STORAGE TEMPERATURE RANGE :
-10 to 70 °C
L O A D
C/F - GND
R E S I S T A N C E
330•ÿ
18•ÿ
or
680•ÿ
Samsung Electronics