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Tag: switchmode

Cat Links Lasers, Personal Project

He-Ne Laser

Posted on February 2, 2013 The Engineer

Having had a He-Ne laser tube for a while & the required power supply, it was time to mount the tube in a more sturdy manner. Above the tube is mounted with a pair of 32mm Terry Clips, with the power leads passing through the plastic top. The ballast resistor

Continue readingHe-Ne Laser

Cat Links Hacks, Personal Project

LED Lighting Part 1

Posted on October 4, 2011 The Engineer

Here I will document progress in replacing standard halogen MR10 lights with LEDs. These units are from TruOpto, available through Rapid Electronics in the UK. They are 3W total, from 3x 1W emitters on an aluminium back plate. Here is the LED attached to a heatsink for testing purposes –

Continue readingLED Lighting Part 1

Cat Links Consumer Gear

PSi 150 Power Inverter

Posted on May 23, 2011 The Engineer

This is a small 120W power inverter, intended for small loads such as lights, fans, small TVs & laptop computers. End cover of the unit, 12v DC input cord at the top, power switch & indicator LEDs at the bottom. Opposite end of the unit, with the standard 240v AC

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Cat Links Computer Gear

ICL Barcode Scanner

Posted on August 2, 2010 The Engineer

An ICL barcode scanner from the 80s is shown here. This is the top of the unit with cover on. Plastic cover removed from the unit showing internal components. Main PSU on left, scan assembly in center. Laser PSU & Cooling fan on right. Laser tube at top. Closeup of

Continue readingICL Barcode Scanner

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  • Helium Neon Lasers
    • He-Ne Lasers – Introduction
    • Applications of a 1mW Helium-Neon Laser
    • He-Ne Laser Safety
      • Laser Safety Classifications
    • Theory of Operation, Modes, Coherence Length
    • He-Ne Laser Tubes, Heads, Structure, Power Requirements, Lifetime
    • Power Requirements for He-Ne Lasers
      • Modular He-Ne Laser Power Supply
    • Wavelengths, Beam Characteristics
    • Magnets in High Power or Precision He-Ne Laser Heads
    • Internal Mirror He-Ne Tubes up to 35 mW – Red and Other Colours
    • Viewing Spectral Lines in Discharge, Other Colours in Output
    • Demonstration He-Ne Lasers, Weatherproofing
    • Interesting, Strange, and Unidentified He-Ne Lasers

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