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  1. Dazza

    3V LED Chaser project

    Hi audioguru, have you thought of trying a hot metal spike to melt a hold through the CD, maybe a high-powered soldering iron with a large TIP . I have an idea that might be interesting to try. If you got a few pieces of Dow, and placed them flat in the shape of a cross, then place the CD on...
  2. Dazza

    I need a suitable replacement(BF245A)

    I found a cross-reference page that was last updated back in 96, and listed these two as a cross-reference. (2N5457) (MPF102) both are available to me locally, well Dick Smith has a listing for them in their catalogue, which usually means there is a chance that they will have them. Does anyone...
  3. Dazza

    I need a suitable replacement(BF245A)

    This is the whole project in PDF. 020161uk_3.pdf
  4. Dazza

    I need a suitable replacement(BF245A)

    I started this capacitance meter project sometime ago, and I gave up as I wasn't sure off a suitable replacement :(. (BF245A) Any help will be greatly appreciated.
  5. Dazza

    Datasheet request

    They were flogging these off cheap at Dick Smith ;D. So if Dick Smith decided they were outdated, they must be ancient. As always, I search long and hard for this datasheet and no go. Philips (OM1681C) signal IC car alarm subsystem. Thank you :).
  6. Dazza

    3V LED Chaser project

    Nothing is simple is it ;D, I'll send Farnell an e-mail. Ante's comment that they would be popular for Christmas,I think is true :). That doesn't give me much time. I can see the scenario, I put a dozen out to test the market, and I find everyone wants one, and then I can see myself going mad...
  7. Dazza

    3V LED Chaser project

    Audioguru, surprise surprise, Farnell doesn't have a listing for the(CD74HC4017N) please tell me there is an alternative ???. Also Farnell does have a listing for the(CD74HC14N) although it is not a (N) it's a (M) will this do the job :-\. Thank you
  8. Dazza

    3V LED Chaser project

    Yes that's right, that way you won't give it a chance to get hot as well ;D. I'm ready for the next one mate :P,
  9. Dazza

    3V LED Chaser project

    Audioguru, it's a deal :D. I'll first have to teach you, how to drink a Guinness upside-down ;). As for your question, a dozen Guinness should do the job nicely :P.
  10. Dazza

    3V LED Chaser project

    Hi audioguru, very nice, top job :D. can I make these and sell them locally ???
  11. Dazza

    AC current measurement

    Hi soundboy, I know very little, but maybe you can use a hall effect sensor for measuring the current, then feed the signal from that to a frequency to voltage converter.
  12. Dazza

    PC Chart Recorder

    lol ;D
  13. Dazza

    Making basic test equipment, need help.

    Thanks Steven, it doesn't mention the gauge wire to use, or the size of the ferrite bead ???. maybe it's not that important. I put together the transistor tester circuit, it works very well :D. One down 4 to go ;D.
  14. Dazza

    Schematics Variable current 12v 60A to 0A

    Yes, most important ante, I have to get your stamp of approval on it ;D;D. ante of Sweden says it's ok 8)
  15. Dazza

    Making basic test equipment, need help.

    This is what I have so far, I haven't checked it four mistakes, I'm not finished with it yet ;). I think it will be best to make them individually and as small as I can, so I can fit them into one small unit. Ante, I did consider that circuit that you posted, but I decided that the one steven...
  16. Dazza

    Making basic test equipment, need help.

    Hi audioguru, I am being ambitious ;D, I'm trying to put four different types of test equipment into one unit, zener diode tester, mosfets tester, transistor tester and 555 timre tester. Not much room for a LCD ;D. If I have to I well use a DMM :(, although it would have been nice to not have to.
  17. Dazza

    Schematics Variable current 12v 60A to 0A

    Ante, aiming for good quality, workmanship and accuracy is important, even if it is a DIY job, I like to take my time and do as good a job as I can, quality not quantity ;). I am hoping for reliability more than accuracy for the pressure transmitter, 10% accuracy would be reasonable to hope for...
  18. Dazza

    Making basic test equipment, need help.

    I would like to try to avoid using a DMM with this Zener diode tester. May be a row of LEDs? Help on how I can do this please :-\. Any help will be appreciated.
  19. Dazza

    Schematics Variable current 12v 60A to 0A

    Ante, you mentioned in a previous post, that you didn't know what the output from U1 was, that's what those voltage measurements were from, the Hall sensor. Ok good, we know this circuit will serve its purpose with a little tweaking, once we know how it needs to interact with the other...
  20. Dazza

    6v drill battery

    Audioguru, couldn't stuee use a voltage regulator (LM350K) it can handle 3A, for the 10V required for the 6-Volt gel cell charger. You have me curious of what your new finished project is, Do you want us to guess what it might be. may be a skunk detector? ;D.
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