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  1. bushtech

    Power-One power supply mod

    kellys_eye: No third winding, I think it's just a standardised label
  2. bushtech

    Power-One power supply mod

    Here's one that's pretty close: http://uk.rs-online.com/web/p/toroidal-transformers/6719139/ But it's not clear to me if the 3.33A is per channel or total for the 2 channels
  3. bushtech

    Power-One power supply mod

    Unfortunately manufacturer sleeping currently
  4. bushtech

    Power-One power supply mod

    lol, and there I was thinking that was urban legend, but I had just weighed it at 1.35kg/2.97lb
  5. bushtech

    Power-One power supply mod

    I'm now rather worried. Is there any way that I can check the specs?
  6. bushtech

    Power-One power supply mod

    :(:mad:
  7. bushtech

    Power-One power supply mod

    I asked the manufacturer to give me 2 secondaries at 28V/120VA each as I'm planning to eventually end up with a power supply with + and - rails. Is your impression that this is not the case? Then I need to check with the manufacturer
  8. bushtech

    Power-One power supply mod

    kellys_eye: My confusion is now complete. I followed Audioguru's advice in post no 30 of this threado_O
  9. bushtech

    Power-One power supply mod

    Just to conclude this thread. I found a local company who could wind me a toroidal and I received this baby: Heavy little bugger. Cost me about $31. I hope this will get Audioguru's stamp of approval. I will be start a thread on the trials and tribulations of my build which will be based on...
  10. bushtech

    Wireless wind vane alert

    Hi Braam and welcome to EP Been thinking about your problem and got a real wacky idea. A normal PC fan has got 3 wires ( sometimes 4) Now the third wire is the interesting one, it sends a signal to the computer telling it that it's working. It's a brushless motor so spins freely. Now I wonder if...
  11. bushtech

    ID Potentiometer

    Thanks st. Edd. Our power going out has put paid to my googling. But thats NOS. Do you still get something like that today?
  12. bushtech

    ID Potentiometer

    Thanks externet and shrtnd. My confusion stemmed from the fact that I was getting 25Ω and I didn't know you got 25Ω pots. Brain was expecting something in the k range. Still trying to find one on the web
  13. bushtech

    ID Potentiometer

    I've got this nice old 10 turn pot. Unfortunately all the stickers have just about disintegrated from old age and I know nothing about it and it's history. Just for interest it was made by Beckman Instruments in Glenrothes Fife Scotland. Model RD. I'm hoping kellys eye will know them...
  14. bushtech

    Progress

    touch of steampunk there?
  15. bushtech

    Smd resistor unbelievable

    Yes, very difficult, even looking at the board. So very few of these connections is a100% certainty I hope you were talking about Q4 being the complimentary transistor. I have made a drawing in Kicad showing how I see the connections. It's extremely difficult as I get multiple connectivity all...
  16. bushtech

    Smd resistor unbelievable

    If it helps the writing on Q18 says 1P with something like a j lying on it's side Could it be this: http://www.s-manuals.com/pdf/datasheet/k/s/kst2222a_fairchild.pdf
  17. bushtech

    Smd resistor unbelievable

    Thanks St Edd Some smd resistor values: 30C=20kΩ 01C=10kΩ 30D=100kΩ 224=49kΩ 01A=100Ω On the red and blue paths: yes and yes. The red path ends up at the top left leg of Q18 Yes, some sort of surge happened when I plugged the new battery in
  18. bushtech

    Smd resistor unbelievable

    St Edd "#1 problem with UPS's . . . . . time declined sulphated batteries . . . or failure to take charge, if gel cell related. But you seem to have a bit of a different problem here." This happened when I put a replacement lead acid battery in and switched on.
  19. bushtech

    Smd resistor unbelievable

    Let's try again davenn is gonna roast me about the file size
  20. bushtech

    Smd resistor unbelievable

    Best i can do, don't know if it helps:
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