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  1. K

    Gear help

    It would help if you explained what you're trying to do...the end goal of the project. It may be easier for us to help solve your problem, than help solve your solution. ;) Ken
  2. K

    Magnetic gearing system!

    It doesn't look like. It appears that it will be a many part article. I see that part #3 is in the next issue. Maybe they will sell individual issues. Ken
  3. K

    Magnetic gearing system!

    Just got a sample copy of Digital Machinist magazine (Vol7 No1, Spring 2012) http://www.digitalmachinist.net/. One of the articles is "A Magnetic Gear Clock...Part Two". Ken
  4. K

    Controlling servos over long distances

    A schematic or sketch of your setup would help us visualize where your problem might reside. Ken
  5. K

    where would I buy a 300 amp 1.5 volt transformer

    Both are potentially dangerous if you have no clue what you doing. Ken
  6. K

    Controlling servos over long distances

    1. If the pots are just changing a DC level in the controller, than it would be easiest to have the pot on one end and the controller/servo on that other. 2. If the pots are part of an oscillator circuit in the controllers and have pulsing voltages on them, I would opt for the pot/controller on...
  7. K

    Controlling servos over long distances

    Do you want the potentiometers at one end of the cable and the controller/servo at the other end, or the pot/controller at one end and the servos at the other? Ken
  8. K

    where would I buy a 300 amp 1.5 volt transformer

    Sounds like a spot welder. If so, you can probably buy one of that rating cheaper than build. Ken
  9. K

    Magnetic gearing system!

    One advantage you could state for the "magnet gears" is 'isolation'. Your gears do not have to be in physical contact with each other to transfer motion.. They can be separated by a physical barrier. This concept is used in "magnetically coupled" pumps. There is a magnet attached to a shaft of a...
  10. K

    Need 1000v??

    1000VDC...but at how much current? If this is a very low-current application like a Geiger counter tube, you can do it with a LM555, MOSFET, and a simple voltage multiplier. So, what's the application? Ken
  11. K

    1Hz timebase question

    Unless you want the experience, and want to spend a lot of time tweaking the timing on a scratch-built crystal oscillator, I would recommend just using the hacked clock oscillator circuit I posted. Ken
  12. K

    1Hz timebase question

    atollp, You never stated what your application is for the 1Hz clock. Ken
  13. K

    Welding Current Transformer Core Materials

    http://how-to.wikia.com/wiki/How_to_build_a_transformer_or_inductor And Google: high power 1khz transformer core material Ken
  14. K

    Piezoelectric buzzer

    Unfortunately the "buzzer"sound is produced within the buzzer module. The rest of 555 circuits only turn it on or off. I suppose you could mechanically attach a small microphone to the buzzer and connect that to you sound system. You could also make a simple astable oscillator circuit with...
  15. K

    Piezoelectric buzzer

    Got a schematic of the quiz buzzed circuit? Ken
  16. K

    1Hz timebase question

    Or you can hack a 1.5V wall/desk clock for a very small, accurate, 1-second pulse source. Ken
  17. K

    Welding Current Transformer Core Materials

    Core material will depend a lot on the frequency of the AC power driving it. Beyond that, I would say that someone that's designing a 100KW transformer should already have the expertise to know that information. Ignorance (lack of knowledge) in designing high-voltage/high-power electrical...
  18. K

    SERVO ANGLE

    I'm assuming you are talking about R/C servos. A positive pulse is outputted to the servo input about every 20mS. The position of the servo shaft/arm is proportional to the width of these pulse. The standard pulse width varies from 1mS for a full CCW position to 2mS for a full CW position. So a...
  19. K

    need help to build a timing gate

    danzili, Do you have real hardware, with links or spec's, in mind for your input? Ken
  20. K

    AC Power Adapter Use

    I think we would need a lot more information to help you. Input AC voltage? Input connection type? Output voltage: voltage?...AC or DC?...regulated or unregulated? Output current?...or current needed by the load device Output connector? Ken
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