Nokia 232, 239 Service Manual lch2
After Sales Technical Documentation
CIGARETTE LIGHTER
CHARGER
LCH–2
Original, 05/94
NMP Part No. 0275007
Cigarette Lighter Charger LCH–2
AMENDMENT RECORD SHEET
After Sales
Technical Documentation
Amendment
Number
Date Inserted By Comments
Original, 05/94Page 2
After Sales
Technical Documentation
Cigarette Lighter Charger LCH–2
CIGARETTE LIGHTER CHARGER LCH–2
CONTENTS
Page No
Introduction 5
General 5
Modes of Operation 5
Charge States and Charge Control 5
Charge Indication 5
Electrical Specifications 6
Functional Description 6
Circuit Description 6
General 6
Converter 6
Oscillator 6
Pulse–width Control 7
Current Limiting 7
Assembly Parts 9
List of Figures
Figure 1: Block Diagram 8
Figure 2: Component Layout Diagram 8
Figure 3: Exploded View 9
Figure 4: Circuit Diagram 11
Original, 05/94 Page 3
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