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  1. J

    [HELP] Timing circuit advise

    What is the time period length you are interested in, mark space ratio? How accurate does the timer need to be? Have you read the sticky about timers?
  2. J

    Testing lighbulb using multimeter

    then the bulb is blown then. It should not work when hooked up.
  3. J

    Testing lighbulb using multimeter

    yes, you are checking for continuity.
  4. J

    Testing lighbulb using multimeter

    as long as the bulb is good, then you should get a reading less then OL across the two bumps on the bottom. If the bulb is blown, then you will OL and you know the bulb is toast. With incandescent bulbs the resistance value is not very important. It will either work or not, this is why I use...
  5. J

    A thingummy circuit

    didn't you already post a link to the circuit in your last post? Maybe he overlooked it...
  6. J

    Testing lighbulb using multimeter

    what do you mean when you say pin type bulb? If it is what I am thinking of, then the outer casing is one lead of the bulb and the bottom of the bulb is the other pin(like on a screw type bulb) Show us a picture of the bulb
  7. J

    Testing lighbulb using multimeter

    OL stands for OPEN LOOP. Which means it has infinite resistance. There is a break somewhere in the circuit between the two probes.
  8. J

    DIY USB password generator

    Other then it giving up the password in a text file, I like it. :cool:
  9. J

    Testing lighbulb using multimeter

    Maybe you should clarify what this means?? It has everything you are asking about, are you not sure how to use it?
  10. J

    Testing lighbulb using multimeter

    Is it this one? the ohm setting is from 9 o'clock to 11 o'clock Just below 200Ohms is the diode tester, it will give an audible beep when the circuit is closed loop. Works perfect for continuity tester.
  11. J

    Testing lighbulb using multimeter

    I can't even find the DMM that you are talking about.
  12. J

    Testing lighbulb using multimeter

    resistance and continuity are closely related (inversely proportional???), the more resistance the less continuity, vice versa. A good incandescent bulb will have a low resistance compared to one that is blown, with infinite resistance.
  13. J

    A thingummy circuit

    use wireless routers with dd-wrt and you can set up a wireless bridge. I did this with a couple of linksys E1000 routers you can find on ebay for $20 bucks refurbs. Anywhere you have power is suitable location for the satellite. $100 bucks and that is 5 satellites. :) I have one base and two...
  14. J

    A thingummy circuit

    ethernet? they already make wireless routers and wireless phones. Install the coax yourself in the walls.
  15. J

    battery time

    Well they both have the same power, so I think it would depend on the efficiency of the circuit to get 5V. I don't think linear regulators are very efficient, but neither is the simplest of boost converters either.
  16. J

    Technological Singularity / Technological Advancement / Transhumanism

    I can't help but laugh at that, technology, getting people over the hill laid since 2025
  17. J

    Technological Singularity / Technological Advancement / Transhumanism

    *shrugs* I haven't even looked at or touched an iphone. I love technology and I love the way it moves the world forward. But, I am always one of the last to adopt. Simply because I hate hauling around baggage. I have yet to ever take my laptop more then a 100 feet from my kitchen table. As...
  18. J

    How to design a 30V DC to 200-300V DC (adjustable) inverter ??

    Well you also need to know how much current is needed. The wiki states that an Avalanche current gets dropped across a 50 Ohm resistor. It doesn't make sense to drop 300V across a 50 Ohm resistor, but if that is the case then you need 6A. That is huge! Without more information no one here is...
  19. J

    How to design a 30V DC to 200-300V DC (adjustable) inverter ??

    So what exactly is your project, photon counting?
  20. J

    Xbox360 psu's to power car amp

    It will still do the same thing, one PSU will more then likely run full bore with the others picking up the slack when needed. They won't balance themselves to use only 20% of 5 different PSU's. As davenn has said, you can only try and see what happens.
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