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  1. Minder

    need help finding ac/dc adapter

    You also need to make sure if it is a simple linear supply (unregulated) or SMPS, which most are now. It makes a difference to the actual output voltage regulation. M.
  2. Minder

    I need to leave Australia!

    Also machine control circuitry falls under NFPA79 (Control circuitry for Industrial Machinery) which is a offshoot of NFPA70 (NEC). M.
  3. Minder

    I need to leave Australia!

    If the electrical standards shown in control and power circuitry for equipment imported from China are any thing to go by, not much appears to be required to be an electrician. Graduates from Wal-Mart Electrical counter??:eek: M.
  4. Minder

    Best brands of pots?

    I meant you are paying for quality, the spec sheet shows a Stainless S. shaft etc. cost over quality??;) e.g. is for example. Most short hand notations in English come from Latin. e.g. = exempli gratia (for example) i.e. = Id est (that is) Et al(ia) = In all etc. etc. Etcetera = et...
  5. Minder

    hooking up a counter and encoder

    Appears to be Z pulse is usually one pulse/rev output (marker pulse). A & B are self explanatory, i.e. the two quadrature pulses, GND, and I assume Ub is power? Outputs are open collector so you need a pull up resistor on each, if none fitted. BK = Z Bn = Ub power Blue = GND GY A & B WH quad...
  6. Minder

    Best brands of pots?

    Digikey should be able to offer cheaper versions than that, most of the cost is in the materials used S.S. shaft for e.g.! Do you need that quality? M.
  7. Minder

    What's a dimmer?

    Also the AC triac style dimmer for lights or ceiling fans and also powered hand tools can be easily converted for DC devices by adding a rectifier bridge between it and the load. M.
  8. Minder

    Help mitre saw blows house fuse

    I would assume it should be earthed due to having the wired ground conductor. As mentioned, ensure it is 240v motor, but I believe they are UK origin so it possibly is correct. Usually these are fitted with a Universal motor and there is quite a high inrush although it appears quite a small...
  9. Minder

    ESAB A10 160K PCB

    Many wire feeders etc are made by a separate Co, but if the Semi's are no longer identifiable it may be a case reverse engineering it or come up with a similar design, there should not really be that much to either of any electronic units. M.
  10. Minder

    Using external xtal osc with a PIC

    Yes. M.
  11. Minder

    Using external xtal osc with a PIC

    See or Down load manual DS41190G see p54 CONFIG register. You should have a header in your file setting the Config bits. M.
  12. Minder

    Did I accidently stumble on a miracle cure for electronics? =)

    Probabally got rid of the plaque :p M.
  13. Minder

    Hitachi desk fan capacitor replacement

    There are typically two types used, start and run, with the run capacitor being high duty cycle, IOW can be permanently in circuit. Start capacitor are low duty cycle due to often being bi-polar constructed from two electrolytics back to back, but not used on a small fan. For a fan I would only...
  14. Minder

    ESAB A10 160K PCB

    Is this a wire fed MIG? M.
  15. Minder

    ESAB A10 160K PCB

    Still no answer as to its function? M.
  16. Minder

    Using external xtal osc with a PIC

    The manual shows that setting Osc CONFIG to EC retains I/O on GP4, GP5 is OSC CLK. M.
  17. Minder

    20A CB not activating

    You would need to monitor the actual current, CB's are fairly imprecise devices and also there is a time delay built in, usually. M.
  18. Minder

    20A CB not activating

    What is the source? If the present source is a linear supply from a transformer, the most efficient way would be to look at the possibility of removing turns, the secondary is usually that top winding so although tricky, it can be done, done it more times than I like to remember. What is the KVa...
  19. Minder

    Determining ratings on stepper motor

    Very difficult without the spec's what make/model are they? You could apply a increasing DC voltage and monitor for typical max temperature for a similar sized motor. M.
  20. Minder

    DC Voltage Measurement to RS232

    Do you want to convert RS232 to some other voltage level? 0-5v? A MAX232 IC does this. M.
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