Description:
Electronic circuit design.
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OT: Tensile strength of steel
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This is not really electronics, but most of us are engineers here. Right? I need to estimate the tensile strength of a steel bar of 25mm width and 1mm thick. Do I have the numbers correct? Using low end estimate of 400MPa steel. 400 MPa = 400,000,000 Newton / sq. meter 25mm x 1mm = 0.025 * 0.001 = 0.000025 sq. meter... more »
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1" cubes
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I seem to have a recurring need for 1" cubes to use as small equipment cases. Things like a little basic circuitry in a lead, and various other very small & simple apps. What do you use for jobs like this? cheers
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removing condenser mic from a PDA and modifying circuit for line-in ?
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I have an old PDA that I would like to modify (if possible) by taking out the built in condenser mic and replacing it with a 1/8" or 1/4" jack that I can plug another device into. Mainly I want to plug a standard stereo headphone output (from iPod/cellphone/walkman/etc) although it would be cool to be able to connect a line-level out from... more »
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Arctic sea ice
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Newspaper headline (AP): "Arctic sea ice at second lowest level on record" Article goes on to state 2nd lowest in 30 years (data taken since 1979). Buried in the article is that the lowest point was LAST year... arctic sea ice is actually increasing after hitting a minimum. Fuckin' liberals :-( ...Jim Thompson... more »
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