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PAMS
Technical Documentation
NSE–3
System Module
Page 3 – 21
Original 11/97
Different PWM Frequencies ( 1Hz and 32 Hz)
When a travel charger (2– wire charger) is used, the power switch is
turned ON and OFF by the PWM input when the PWM rate is 1Hz. When
PWM is HIGH, the switch is ON and the output current Iout = charger cur-
rent – CHAPS supply current. When PWM is LOW, the switch is OFF and
the output current Iout = 0. To prevent the switching transients inducing
noise in audio circuitry of the phone soft switching is used.
The performance travel charger (3– wire charger) is controlled with PWM
at a frequency of 32Hz. When the PWM rate is 32Hz CHAPS keeps the
power switch continuously in the ON state.
SWITCH
PWM (1Hz)
SWITCH
PWM (32Hz)
ON
ON
ON
ON
OFF
OFF
Содержание NSE-3 SERIES
Страница 3: ...NSE 3 SeriesTransceivers PAMS Technical Documentation Original 11 97 Chapter 1 Foreword ...
Страница 7: ...NSE 3 Series Transceivers PAMS Technical Documentation Original 11 97 Chapter 3 System Module ...
Страница 79: ...PAMS Technical Documentation NSE 3 System Module Page 3 73 Original 11 97 This page intentionally left blank ...
Страница 80: ...PAMS Technical Documentation Original 11 97 Chapter 4 UI Module UE4 ...
Страница 83: ...PAMS Technical Documentation UI Module UE4 Page 4 4 Original 11 97 Baseband Block Diagram ...
Страница 95: ...PAMS Technical Documentation UI Module UE4 Page 4 16 Original 11 97 This page intentionally left blank ...
Страница 96: ...UIF Module UE4 Original 11 97 4 A3 1 Circuit Diagram of UIF Module Version 8 Edit 44 for layout version 10 ...
Страница 98: ...UIF Module UE4 Original 11 97 4 A3 3 Circuit Diagram of Keyboard Version 8 Edit 38 for layout version 10 ...
Страница 99: ...UIF Module UE4 Original 11 97 4 A3 4 Layout Diagram of UE4 Version 10 ...
Страница 100: ...PAMS Technical Documentation Original 08 96 Appendix 1 TRANSCEIVER NSE 3NX ...
Страница 104: ...NSE 3 Series Transceivers PAMS Technical Documentation Original 11 97 Disassembly Troubleshooting Instructions ...
Страница 139: ...PAMS Technical Documentation Original 11 97 HFU 2 ...
Страница 146: ...PAMS Technical Documentation HFU 2 Page 8 Original 11 97 Exploded View of HFU 2 3 2 4 5 1 ...
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Страница 154: ...PAMS Technical Documentation Original 11 97 CARK 64 Installation Guide ...
Страница 158: ...PAMS Technical Documentation CARK 64 Page 5 Original 11 97 This page intentionally left blank ...
Страница 159: ...PAMS Technical Documentation Original 11 97 CARK 91 Installation Guide ...
Страница 167: ...PAMS Technical Documentation CARK 91 Page 9 Original 11 97 This page intentionally left blank ...
Страница 168: ...NSE K B 3 Series Transceivers PAMS Technical Documentation Original 11 97 Service Tools ...
Страница 192: ...PAMS Technical Documentation NSE K B 3 Service Tools Page 25 Original 11 97 This page intentionally left blank ...
Страница 193: ...NSE 3 System Module UP8T Original 11 97 3 A3 1 Block Diagram of System RF Blocks ...
Страница 194: ...NSE 3 System Module UP8T Original 11 97 3 A3 2 Circuit Diagram of Baseband Version 12 Edit 8 for layout version 14 ...
Страница 195: ...NSE 3 System Module UP8T Original 11 97 3 A3 3 Circuit Diagram of Power Supply Version 14 Edit 41 for layout version 14 ...
Страница 198: ...NSE 3 System Module UP8T Original 11 97 3 A3 6 Circuit Diagram of Audio Version 14 Edit 27 for layout version 14 ...
Страница 199: ...NSE 3 System Module UP8T Original 11 97 3 A3 7 Circuit Diagram of IR Module Version 14 Edit 21 for layout version 14 ...
Страница 200: ...NSE 3 System Module UP8T Original 11 97 3 A3 8 Circuit Diagram of RF Block Version 14 Edit 26 for layout version 14 ...
Страница 203: ...NSE 3 Series Transceivers PAMS Technical Documentation Original 11 97 Tuning Instructions ...
Страница 217: ...PAMS Technical Documentation NSE 3 Tuning Instructions Page 15 Original 11 97 This page intentionally left blank ...