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  1. bushtech

    Power-One power supply mod

    @Audioguru: Is there something fundamentally wrong with this design.? I must say I am perturbed by Mr Kokotov's calculation of 96W of dissipated power when using a 1V 3A setting although that is probably a rather unusual setting. At 96W you can probably see the power supply glow at 20m.
  2. bushtech

    Power-One power supply mod

    Well, I wonder if there's good un's and bad un's. This guy found 2 different boards with the one having components mis oriented: http://www.qsl.net/z33t/dc_0-30v_0-3A_eng.html And just when I thought I had a winner
  3. bushtech

    Power-One power supply mod

    Wow, thanks Audioguru!. Thank goodness I haven't pulled the trigger on the kit. So where can I find this replacement kit?
  4. bushtech

    Power-One power supply mod

    Thanks a mil kellys_eye. I think it's the same as this: https://www.banggood.com/0-30V-2mA-3A-Adjustable-DC-Regulated-Power-Supply-DIY-Kit-p-958308.html?rmmds=search Which I can get for $5.22. Even better:):) Presumably I would need 2 of these to give me + and - rails? And then I need to...
  5. bushtech

    NE555, LM7805, and MC34063

    I thought I'd break it gently;)
  6. bushtech

    NE555, LM7805, and MC34063

    but, yes, the bottom leg should go to trig. not earth, well spotted and 0/10 for circuitstoday
  7. bushtech

    NE555, LM7805, and MC34063

    *steve* I just pulled an image from the net to show him what he's up against if he needs to build an analog version by tomorrow
  8. bushtech

    NE555, LM7805, and MC34063

  9. bushtech

    Power-One power supply mod

    It has always been a dream to have a decent power supply for my bench. This power supply was gifted to me by a very kind friend. It's a Power-One HCC15-3. It pushes out + and - rails from about 10V to 17V regulated by 2 pots at a very healthy +- 3A. Like this piece of kit. How...
  10. bushtech

    Issues with arduino power from cars accessory power fuse

    Maybe try running power straight from car battery. Arduino R3 recommended voltage 7-12V. Alternator pushes voltage higher than that when charging. Maybe arduino tripping out when alternator starts up. Alternatively is your car battery in good shape?
  11. bushtech

    Comedy Thread

    Well, if she was holding the soldering iron between her lips she'd be Hot Lips Hoolihan!
  12. bushtech

    I Want To Make A Device That Tells Me That Electricity Is Back

    Done already. But installed a lp gas generator for when the petrol (the other gas for the US citizens here) runs out. Which is a distinct possibility since since some clever chappie sold South Africa's fuel reserves
  13. bushtech

    I Want To Make A Device That Tells Me That Electricity Is Back

    In South Africa and probably a lot of Africa the power can go on off up to 5 times a minute or stay off for a week. I'd rather automate the notification
  14. bushtech

    I Want To Make A Device That Tells Me That Electricity Is Back

    Thanks for this FuZZ1LOGIC. I need these as well thanks to SA's prince of darkness.
  15. bushtech

    Series or parallel fans for max cooling ?

    I have never had this problem with my old 180A air cooled welder. Suggest you try 73's de Edd's suggestion. He's normally right "on the money".
  16. bushtech

    Technics turntable's stylus specs required

    Somebody on this SA forum will be able to help you: https://www.avforums.co.za/index.php
  17. bushtech

    Solution required for Relay burning issue

    Put up a well earthed lightning mast in the vicinity
  18. bushtech

    Avery berkel

    Strong magnet? :oops:
  19. bushtech

    Tyco Igbt Datasheet

    P21305 datasheet here : http://www.ic2ic.com/search.jsp?sSearchWord=P213A05&prefix=P
  20. bushtech

    Voltage Regulation Using Diodes Problem

    Original poster
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