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Figure 9-13: Bottom Mounted Heat Sinks (top view) ........................................................................................ 40
Figure 9-14: Detail of Negative Battery Contact .............................................................................................. 41
Figure 9-15: Detail of Positive Battery Contact ................................................................................................ 41
Figure 9-16: A Low Cost Battery Holder ......................................................................................................... 42
Figure 9-17: Battery Holder in a Consumer Grade Fast-Charger ...................................................................... 42
Figure 9-18: Battery Holder in an Industrial Flashlight ...................................................................................... 42
Figure 9-19: The Intellicharge Battery Holder .................................................................................................. 43
Figure 9-20: Inserting a Battery (Stage 1) ....................................................................................................... 43
Figure 9-21: Inserting a Battery (Stage 2) ....................................................................................................... 43
Figure 9-22: Inserting a Battery (Stage 3) ....................................................................................................... 43
Figure 9-23: Machined Components of Cell Charger ....................................................................................... 44
Figure 9-24: Connec2it High Durability Spring Contact .................................................................................... 45
Figure 9-25: CCM Arrangement if Rails were Centered ................................................................................... 45
Figure 9-26: Chassis Inside Two Piece Mounting Plate ................................................................................... 46
Figure 10-1: Autoranging Power Converter PCB Before Potting ....................................................................... 47
Figure 10-2: Circuit Diagram of APC Divided into Regions ............................................................................... 48
Figure 10-3: Detail of Power Filtering Components ......................................................................................... 49
Figure 10-4: Schematic of Power Filtering Components .................................................................................. 49
Figure 10-5: Autoranging Switch Components ................................................................................................ 49
Figure 10-6: MC33161 Internal Configuration and Graph of Typical Voltage Response. [126]. ........................... 50
Figure 10-7: Schematic of Autoranging Circuitry ............................................................................................. 50
Figure 10-8: Detail of Low Voltage Converter.................................................................................................. 51
Figure 10-9: Bulk Capacitors in the Low Voltage Converter ............................................................................. 51
Figure 10-10: Schematic of PWM Controller. .................................................................................................. 52
Figure 10-11: Winding the LV Flyback By Hand .............................................................................................. 53
Figure 10-12: LV Converter Output Diode and Caps ....................................................................................... 53
Figure 10-13: Schematic of Output Voltage Regulator ..................................................................................... 54
Figure 10-14: LV Converter Primary Clamp. ................................................................................................... 55
Figure 10-15: Detail of High Voltage Converter ............................................................................................... 55
Figure 10-16: HV Converter Aux Winding PSU............................................................................................... 56
Figure 10-17 HV Converter RC Network ......................................................................................................... 57
Figure 11-1: Main Components of the Cell Charger......................................................................................... 59
Figure 11-2: Cell Charger Circuit Diagram Divided into Regions....................................................................... 60
Figure 11-3: Input Filter and Regulator Components ....................................................................................... 61
Figure 11-4: Schematic of Regulator Components .......................................................................................... 61
Figure 11-5: Detail of Embedded Microcontroller. ............................................................................................ 61
Figure 11-6: Switching Regulator (3 Amp Version) .......................................................................................... 62
Figure 11-7: Schematic of Switching Regulator ............................................................................................... 63
Figure 11-8: Schematic of VCF Block............................................................................................................. 64
Figure 11-9: Digital Temp Sensor Mounted in CCM ......................................................................................... 64
Figure 11-10: Detail of Battery Conditioning MOSFET..................................................................................... 65
Figure 11-11: Schematic of Battery Conditioning Components......................................................................... 65
Figure 13-1: PCB Layout for the APC............................................................................................................. 74
Figure 13-2: PCB Layout for Cell Charger ...................................................................................................... 74
Figure 14-1: Preliminary Impression of Molded Design (Isometric View) [164] ................................................... 75
Figure 14-2: Preliminary Impression of Molded Design (Bottom View) [164] ...................................................... 75
Figure 15-1: Political Map of Mozambique Region [165]. ................................................................................. 82
Figure 15-2: The Ebinger EBEX 421 GC Detector [3]. ..................................................................................... 82
Figure 15-3: Political Map of Cambodia Region [174]. .................................................................................... 85
Figure 15-4: The Minelab F4 Mine Detector [3]. .............................................................................................. 85
Figure 16-1: Proposed Fastener Modifications ................................................................................................ 89
Figure 16-2: Partial Cut-Away View of Battery Holder ...................................................................................... 90
Figure 16-3: Alternative Battery Contacts ....................................................................................................... 90
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