www.logwell.com

General Information
  High Voltage Regulators (Replace the Victoreen Corotron)
  Shipping Tips
  Well Logging Equipment Photographs
  A Brief History of Logging Equipment Manufacturers

Tool Information
  High Count Rates
  Anti-Coincidence Considerations
  Line Driver Notes
  High Voltage Woes
  High Voltage Tips & Tricks
  Downhole Low Voltage Power Supplies
  GO/MLS COSMOS Tool Notes
  Gamma Ray Scintillation Detector Calibration
  Neutron Tool Calibration
  Dummy Lines / Logging Cable (Wireline) Characteristics
  Single Conductor Logging Cable (Electric Wireline) Data
  Cable Reheading Made Simple
  Casing Collar Locator (CCL)

Components and Materials
  Downhole Plastics, Composites, and Ceramics
  AnaLog's IC "Chip" Identification
  ECG / NTE / SK Replacement Semiconductors
  AnaLog's Mil Spec Resistor Data
  Standard EIA Decade Resistor Values Table
  Ceramic Capacitors
  Logging Equipment Op Amps (Or How I Learned to Love the CA3140)
  AnaLog's Handy Zener Diode List
  AnaLog's Photomultiplier Tube (PMT) List and Manufacturers Links
  Temperature Sensors
  Nuvistors
  SIE Transformer Identification
  Potter & Brumfield SL11DB, etc. Relays (pdf file)
  SL11DA, SL11DB, SL11DC, SL11DD and SC Series Catalog Page
  Old Victoreen Tubes Catalog (large pdf file)
  Including Corotron High Voltage Regulators
  Surplus (Cheap) Electronics

Wire, Tubing and Connectors
  Teflon Wire Trivia
  Teflon Tubing Trivia
  MS Cylindrical Connector Trivia
  Downhole Wiring Color Codes and Tool Connector Pinouts

Service Tips & Tricks
  A Word About O-Rings
  A Word About Tape
  A Word About RTV Silicones
  A Word About Solder
  A Word About Optical Coupling Grease
  A Word About Downhole Printed Circuit Board (PCB) Design
  Cleaning Secrets Revealed
    See Also Service Tips

Schematics and Printed Circuit Boards
  Schematics:
    Casing Collar Locators (pdf files)
    Radiation Tools (pdf files)
    Temperature Tools (pdf files)
    Cement Bond Tools (pdf files)
    Caliper Tools (pdf files)
    Shooting Schematics (pdf files)

  Printed Circuit Boards (PCBs):     PCB Details and Photographs
    106 Radiation Tool™ Printed Circuit Boards (PCBs)
    High Voltage Related Printed Circuit Boards (PCBs)
    Temperature Log Related Printed Circuit Boards (PCBs)
    Cement Bond Log Related Printed Circuit Boards (PCBs)
    Casing Collar Locator (CCL) Printed Circuit Boards (PCBs)
    Caliper Log Related Printed Circuit Boards (PCBs)
    Bell / Worthwell Printed Circuit Boards (PCBs)

  Complete Schematic / PCB List