Recent content by davea0511

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    Kingston 2GB DataTraveler USB 2.0 Flash Drive - Only $9.95

    Check out this thing: http://www.acp-ep.com/usb_drives20_specs.html It's available at compu-usa for $10-20 depending on the size (free shipping too). At 25 MB/sec read and 20 MB/sec write (what it claims) - wow, there's a real nice price-performance ratio. Makes me wonder how accurate those...
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    A simple circuit to simulate a momentary switch

    Suprisingly, I got both circuits I linked to above to work as expected, but there was a problem: the capacitor kept the signal high for a short time period after I disconnected the power. That is unacceptable because in the event of a power glitch the circuit wouldn't do anything to turn the...
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    A simple circuit to simulate a momentary switch

    jtwill, elecrzy, xsauronx - This is part of a kiosk so other people are going to be plugging the kiosk into the power outlet (like a janitor might do when he's vacuuming) - that's one of the reasons I want it to automatically turn on when they plug it in. My Motherboard has a jumper that...
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    A simple circuit to simulate a momentary switch

    Well, how about when I say it this way. When you turn anything on abruptly, capacitors essentially act like short circuits for a brief moment. So if your input jumps rapidly from 0 to 3.3V, the gate will jump to a value SOONER than what you were expecting. You should put the capacitor between...
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    A simple circuit to simulate a momentary switch

    Thanks for the insight! I think I get what you mean, but the way I addressed your feedback is a little different than what you suggested. Have a look: http://brainstep.com/circuit2.html The ground in this circuit gives the capacitor something from which to couple a negative charge when...
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    White LED bike light: great visibility, mediocre illumination

    I think it has more to do with the wavelength of light. Your Halogens have a much longer wavelength (that's why it's more yellow), and the new high output LED's are all in the shorter wavelength range (blue). That's why the sky is blue - the blue light get's scattered more easily because it's...
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    A simple circuit to simulate a momentary switch

    Here's my problem... The power switch on my LCD monitor is a momentary switch, and if I disconnect then reconnect the power to the monitor, I have to manually push the momentary switch again to turn on the monitor, which is a pain because the monitor is behind a control panel. So I want the...
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    Looking for the smallest X86 currently available

    I'm looking for the smallest X86 compatible system currently available (including the box). The smallest one I have been able to find so far is this: http://www.lex.com.tw/case-light.htm dimensions are: 4.9cm(H)x23.4cm(W)x17.7cm (D) in inches: 1.9 x 9.2 x 7 And I'd use the MV823A...
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    Tired of so many loud inefficient cooling solutions

    Is it just me, or does it seem like there are a ton of new heatsinks that sure look cool, and some sure are big, but very few are much better than what's been around for a while. Can you say gimmicky? Heat pipes are cool (no pun intended). But all they do is move heat from one place to...