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  1. A

    Build your own CD battery tab welder for about $100.00+-

    Hi Dave, You are right about the RMS current reading. It is averaged over 100 ms, and it is not reflective of the peak current reading. However, the Fluke LEM LH1040 has the ability to be hooked to an Oscilloscope, and by turning a switch in the battery compartment can give instantaneous...
  2. A

    Build your own CD battery tab welder for about $100.00+-

    Hi Ekke, I am not familiar with MOFSETS, but the copper wiring resistance is usually about 2mΩ, the following link will take you to a site that would discuss it: http://www.powerstream.com/Wire_Size.htm Also, SCR's do not have a high resistance. It is usually on the order of 1mΩ. I...
  3. A

    Build your own CD battery tab welder for about $100.00+-

    If anybody is interested in Cheap Nickel Strips, there is somebody offering it on ebay for less than $20.00 a pound but you have buy about 30+ pounds. That is a very good price if you tried to shop around for it. The link is...
  4. A

    Build your own CD battery tab welder for about $100.00+-

    I am using the same IBM THYRISTOR, which I bought off ebay. The gate voltage that I am using to trigger it is about 3 Volts with a 4 ohm resistor connected in series giving a current of about 0.68 Amperes. The setup up works fine, but when I tested this thyristor, I was able to trigger it with...
  5. A

    Build your own CD battery tab welder for about $100.00+-

    There is a nice article in Wikipedia about capacitors and DC circuits. The link is http://en.wikipedia.org/wiki/Capacitor. I am guessing that devices like the Fluke multimeter measure the capacitance of a capacitor by charging an empty capacitor a calculated current for a short period of time...
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