After Sales
Technical Documentation
RAE/RAK–1N
Accessories
Page 11
Original, 08/96
Small resistor R112 is put to make this little voltage difference in main
current path. Voltage gain over R112 is 83 in the amplifier. This is
compared to two reference voltages. First determines the current at
which LED color is changed: 65mA. Second reference is put for stopping
the charge at lower current value: 30mA. This is made to ensure that
there is no capacity loss in Li–Ion battery if it remains in desktop charger
many days.
Different Charging Voltages
Two cell Lithium–Ion carbon technology requires 8.4V constant voltage
charging. Two cell Lithium–Ion graphite technology must be charged by
8.2V constant voltage. Because the controller is already set to 8.4V
charging, higher voltage reference and voltage dividor from reference to
battery voltage is required to feed 8.4V to controller and maintain 8.2V in
battery line for graphite batteries. Because the reference is zener, its
voltage is not stable unless current is set high enough. Voltage tolerance
of charger sets minimum current value at this voltage: 10V. Nominal
charger voltage makes zener current high. This also makes high leakage
current path from battery to regulator input. V148 is cutting this current
path when either charger or battery is disconnected. Battery chemistry is
detected by battery type sense resistor which is connected to ground
inside battery pack. Connecting battery biases pin 5 of N110 so that
either voltage is selected when charging starts. V147 controls the voltage
shown to charge controller N115. If V147 conducts battery voltage is
directly fed to controller resulting 8.4V charging. If V147 is off, voltage
dividor makes battery voltage 8.2V.
DC Characteristics
Table 1. Battery type sense resistor values inside battery pack
Notes
Typical / Nominal
Operating input voltage:
12 Vdc
1V
Max. input current:
800 mA
70 mA
Charge voltage (type sense resistor: 100k)
8.4 V
Charge voltage (type sense resistor: 68k)
8.2 V
Typical power consumption
10 mA
Table 2. Supply Voltages and Power Consumption
Notes
Typical / Nominal
Operating input voltage:
12 Vdc
1V
Max. input current:
800mA
70mA
Содержание 9000i
Страница 7: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 1 Overview ...
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Страница 93: ...After Sales Technical Documentation RAE RAK 1N Series Chapter 4 Transceiver GE8 GE9 UIF Module ...
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Страница 107: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 5 Transceiver GE8 GE9 SIM Flex Module ...
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Страница 113: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 6 PDA Hardware Module GP1 ...
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Страница 159: ...After Sales Technical Documentation RAE RAK 1N Series Amendment 1 04 97 Chapter 7 Service Software ...
Страница 243: ...After Sales Technical Documentation RAE RAK 1N Series Original 05 97 Chapter 8 Faultfinding Disassembly ...
Страница 287: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 9 Service Tools ...
Страница 301: ...After Sales Technical Documentation RAE 1N Series Original 04 97 Chapter 10 Schematics ...
Страница 303: ...RAE 1N Original 08 96 10 11 Page 1 Figure 1 Component Layout Bottom ...
Страница 304: ...RAE 1N Original 08 96 10 12 Page Figure 2 Component Layout Top ...
Страница 305: ...RAE 1N Original 08 96 10 13 Page Figure 3 Baseband Circuit Diagram PWRU ...
Страница 306: ...RAE 1N Original 08 96 10 14 Page Figure 4 Baseband Circuit Diagram MCM1 ...
Страница 307: ...RAE 1N Original 08 96 10 15 Page Figure 5 Baseband Circuit Diagram MCM2 ...
Страница 308: ...RAE 1N Original 08 96 10 16 Page Figure 6 RF TX Circuit Diagram ...
Страница 309: ...RAE 1N Original 08 96 10 17 Page Figure 7 RF RX Circuit Diagram ...
Страница 310: ...RAK 1N 10 20 Page Amendment 1 04 97 Figure 18 PCN Component Layout Bottom ...
Страница 311: ...RAK 1N 10 21 Page Amendment 1 04 97 Figure 19 PCN Component Layout Top ...
Страница 312: ...RAK 1N 10 22 Page Amendment 1 04 97 Figure 20 PCN RF TX ...
Страница 313: ...RAK 1N 10 23 Page Amendment 1 04 97 Figure 21 PCN RF RX ...
Страница 314: ...RAK 1N 10 24 Page Amendment 1 04 97 Figure 22 UIF Schematic PCN ...
Страница 315: ...RAK 1N 10 25 Page Amendment 1 04 97 Figure 23 UIF Component Layout PCN ...
Страница 316: ...RAE 1N Original 05 97 10 3 Page Figure 1 PDA Block Diagram Edit 82 for layout 13a ...
Страница 317: ...RAE 1N Original 05 97 10 4 Page Figure 2 PDA Power Unit PWRU Edit 108 for layout 13a ...
Страница 318: ...RAE 1N Original 05 97 10 5 Page Figure 3 PDA Serial Interface SIRU Edit 24 for layout 13a ...
Страница 319: ...RAE 1N Original 05 97 10 6 Page Figure 4 PDA MCU and Memory PROCU Edit 121 for layout 13a ...
Страница 320: ...RAE 1N Original 05 97 10 7 Page Figure 5 PDA EMIU Edit 21 for layout 13a ...
Страница 321: ...RAE 1N Original 05 97 10 8 Page Figure 6 Keyboard matrix Edit 24 for layout 13a ...
Страница 322: ...RAE 1N Original 05 97 10 9 Page Figure 7 PDA Memory Edit 28 for layout 13a ...
Страница 323: ...RAE 1N Original 05 97 10 10 Page Figure 8 PDA Component Layout 13a ...
Страница 324: ...RAE 1N Original 08 96 10 18 Page Figure 1 UIF Schematic ...
Страница 325: ...RAE 1N Original 08 96 10 19 Page Figure 2 Component Layout Uif ...
Страница 326: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Accessories ...
Страница 340: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 CARK60 Installation Guide ...
Страница 352: ...After Sales Technical Documentation Appendix 2 RAE RAK 1N Amendment 1 04 97 PARTS LISTS ...
Страница 399: ...After Sales Technical Documentation RAE RAK 1N Parts Lists Page 48 Amendment 1 04 97 Mechanical Assy Parts RAE 1N ...
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Страница 402: ...After Sales Technical Documentation Appendix 1 RAE RAK 1N Original 08 96 QUICK GUIDE ...
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