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  1. bushtech

    Power supply for little halogen light popped

    I have found a 1/4W 1.2Ω resistor at Mantech that I'll order. Metal film though
  2. bushtech

    Power supply for little halogen light popped

    St Edd Duh. So there is no difference between a fusible resistor and a normal resistor?
  3. bushtech

    Power supply for little halogen light popped

    Thanks Bertus Interesting reading Gaat je wel Dries
  4. bushtech

    Power supply for little halogen light popped

    Fuse rating = (watts/volts) x 1.25 20/230x1.25=0.108A 150mA fuse?
  5. bushtech

    Power supply for little halogen light popped

    Thank you all very much. I would never doubt St Edd so 1 or 2Ω 1/4W it will be. It seems to be very difficult to find fusible resistors here. Found some 0.47ohm 1/4 W at RS but not likely to buy 4000 of them. Can I not shoehorn a 1 or 2ohm resistor in there in series with a suitably rated fuse...
  6. bushtech

    Power supply for little halogen light popped

    I stripped the heatshrink off the fusible resistor. This is what I found: Uhm. What is the value here? 5 band resistor. Neither white or red is a tolerance. The colours as I see it are red/black/silver/gold/white.
  7. bushtech

    Power supply for little halogen light popped

    The smallest fusible resistor Mantech has is 4.7Ω 1/4W. Can I stick ten of them in parallel?:eek:
  8. bushtech

    Power supply for little halogen light popped

    @73's de Edd: Brilliant suggestion thanks. If I get those parts and they don't sort the problem this will be the next thing I try
  9. bushtech

    Power supply for little halogen light popped

    Ah, 73's de Edd to the rescue. Thank you for giving me the value of that fusible resistor. At a coupla million ohms as compared to 0.47ohms I think I can safely call it blown:D So replacing the 13005's and the fusible resistor should sort this power supply.Will be ordering these parts. Please...
  10. bushtech

    Power supply for little halogen light popped

    @Tha fios agaibh : Yes, I am going to call the diac good. In any case, my audioguru power supply only goes to to 30V, so that settles that
  11. bushtech

    Power supply for little halogen light popped

    Yes thanks Bertus, I think it's identified correctly. But the questions remain
  12. bushtech

    Power supply for little halogen light popped

    If I am identifying diode D5 correctly it is a trigger diode with a fixed voltage reference. Have not been able to find a datasheet that shows it's internal layout but symbols of it show 2 diodes with the cathodes connected. No idea how you test something like this with a meter. Am I right that...
  13. bushtech

    Power supply for little halogen light popped

    @bertus Thank you for those very informative links. Busy wading through them
  14. bushtech

    Power supply for little halogen light popped

    @Tha fios agaibh Thank you. The mystery object connected to live line and other end to one leg of blue MOV and one leg of one of the br diodes. Will check inline caps and resistors
  15. bushtech

    Power supply for little halogen light popped

    This light stopped working when I switched it on. Here is the little power supply: On checking the 2 big 13005 transistors are shorted between all legs. Bit surprised by this as they are hefty jobs and show no signs of damage. Also the diode D5 is open. It's marked DB3 and C53 as far as I...
  16. bushtech

    New project - 1967 oscilloscope restoration

    lol. I have always wondered what those marks on my caps are:D
  17. bushtech

    New project - 1967 oscilloscope restoration

    Transformer set at an angle
  18. bushtech

    New project - 1967 oscilloscope restoration

    Love the wind tunnel tuned transformer:eek:
  19. bushtech

    Comedy Thread

    This I gotta see:D
  20. bushtech

    Is there a 12VDC power regulator / timer?

    How about an intelligent maintenance battery charger for the vehicle?. Can be left attached attached indefinitely as it just tops up the car battery as required.
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