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  1. B

    Does anyone know of a good electric motor lubricant ?

    Assume this is ball bearings? If so, I normally use high temp wheel bearing grease. If for sintered bronze bushing, usually light motor oil sae 30.
  2. B

    Super bright led light

    A jigger...??:cool:
  3. B

    Need help finding replacement transformer for oven control board

    Further to Steve's input, you might get some idea of the output by the voltage on the large electrolytic cap nearby or perhaps U1 numbers as I suspect it's a regulator. Output appears to be 2 windings? I see a 5v test point on the top left area but this could be from a zener somewhere. It looks...
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    Super bright led light

    We used to use a car horn. No missing that.
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    Light switch

    Best advice would be to get a registered electrician. There are many things there that will confuse you and you may end up seriously hurting someone.
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    No output from fog machine PCB

    Something doen't add up here.... Photo 1 shows the top view of the board with power/heater terminals top left. Photo 2 shows opposite side of the board with the same terminals on the same side of the board. To me they should be on the top right when turned over or did you do some negative...
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    Arduino RGB strip controller switching problem.

    You appear to be having several basic problems and no understanding of why so it might be a good move for you to just start with an Arduino Nano for maybe $5.00 which has all the necessary micro bits ready to go at least and then progress to your own board building further down the track.
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    Arduino RGB strip controller switching problem.

    I can see a 12v regulator feeding the strips ....???
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    Arduino RGB strip controller switching problem.

    I don't see any caps on the crystal, usually around 22pf from each leg to ground. Also noise filtering cap on the chip itself. Probably best to break the circuit down into individual bits and get each working first otherwise it becomes a big chunk of problem with no idea where to start.
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    Stepping up the voltage for a Geiger Counter

    Most here are English speaking so perhaps find a site to link to that is the same.
  11. B

    How can a magnetic micro usb cable work in both directions?

    Take a GOOD look at the drawing. DC applied in either direction gives dc out at the required polarity. Pretty sure that's what you were after...
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    How can a magnetic micro usb cable work in both directions?

    Maybe something like a-this
  13. B

    Filter Capacitor - Identify pins

    Black nut and backing look like an insulator to me. As I said previously, better pic of the markings would help. Anything Google throws up says " old " so maybe not so good
  14. B

    9v Battery mystery

    There are many brands and types. Do you have more details or better still a photo or 2?
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    Filter Capacitor - Identify pins

    ac cap , perhaps paper , no positive/negative... Need to see more clearly the markings. what happened to the other pins? or is it 1 pin and 2 sockets?
  16. B

    Rubber glue for holding wires on ICs/PCBs?

    Any type of "contact cement/adhesive". Usually it entails coating each of the surfaces to be joined with a thin layer, letting it dry for a few minutes and then when clamped together, it goes no-where. Of course one can use it also as you describe to hold wiring if you put a dob of it on top...
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    4 Channel Car Amp not outputting

    Thoughts were more along the line of anti-static actually.:)
  18. B

    4 Channel Car Amp not outputting

    Note that for any future work, using soldering gear like you have in the photo might be one of your problems, if not now, then further down the track.
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    Suspected static discharge

    If all else fails, fit a small interposing relay.
  20. B

    Rapidly change electro magnet polarity.

    Strap a bar magnet onto the end of a dc motor and vary the speed ?
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