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  1. K

    SOIC>DIP

    http://www.schmartboard.com/index.asp?page=products Also Google: SOIC to DIL adapter Ken
  2. K

    How to heat a wire.

    Have you considered discussing your needs with an applications engineer at the wire's manufacturer? Ken
  3. K

    How to heat a wire.

    No. Ken
  4. K

    How to heat a wire.

    http://www.autosplice.com/Product/?id=10043#1-content=1-toggle~~visible-content 0.5mm=~0.020" and 20mm=~0.78" so at 0.16Ω/inch, your wire resistance is 0.125Ω Put a 3v button cell across that and you draw 24 amps No button cell will do that. Ken
  5. K

    circuit board repair

    Of course...but check with some independent marine electronics service shops. Mathers seems big enough that independents would handle it. Depending how old it is though, it might or might not be cheaper to upgrade than repair. Ken
  6. K

    circuit board repair

    The "manufacturer service rep" can't repair it? Google: marine electronics repair Ken
  7. K

    A Student's Dilemma

    Driving a motor? How much current...or what horsepower? Ken
  8. K

    Simp.e romote control

    Is the fuse symbol (s-curve between circles) the load? That circuit won't work because the forward drop of each transistor is 0.6V. The combination is 1.2V between the battery and the load. If there is any drop across the 100Ω resistor, there is no voltage left for the load. I've worked with IR...
  9. K

    Variable Transformer & Home Made Resistor

    Can you post a photo? Ken
  10. K

    Simp.e romote control

    What are you trying to switch? And from what distance. And are we talking line of sight, or through obstacles.
  11. K

    invention/adapter

    OK, you intend to use a 2KW tool in a defective outlet. If the contact tension is bad it may be that the contacts may have overheated in the past due to excessive loads or corrosion. That means the the internal wire connects are also suspect. If I found an outlet with bad contacts in pressure...
  12. K

    invention/adapter

    With the resistors, you would be continuously wasting 0.4W of power in heat for a function that is only needed on original installation. Not very "green". And unless the OP can sell a million units, I don't think he will be able to recoup the UL (or EU version) certification, liability...
  13. K

    DIY string potentiometer

    If you are looking at recording the extension of the shock during actual driving, as john said it won't work. It can't respond fast enough. An LVDT (linear variable differential transformer) would more appropriate...but a bit more complete to implement with a DI-149. Ken
  14. K

    Cheap Powersupply

    Warning...Be very careful when extracting the PCB from the wall-wart's case, so you don't cut into the PCB or components. Here is how I usually do it: http://www.electro-tech-online.com/general-electronics-chat/93884-not-transformerless-power-supply.html#post749571 Ken
  15. K

    Step down from 110v AC to 6v DC on miniature scale

    How small is your vision of "miniature"? How much is current needed for the actuator? My solution https://www.electronicspoint.com/cheap-powersupply-t249023.html Ken
  16. K

    Cheap Powersupply

    I occasionally run into the problem of adding an internal low voltage DC power supply to a case that already has line voltage available inside. My usual solution is to hack a SMPS wall-wart. The internal PCB is light, efficient, isolated, cheap (they are free...check your junk drawer), and...
  17. K

    Gear help

    I still have no idea what you want to do...so can't help. Ken
  18. K

    Gear help

    Without specific details that will relate to your needed speed, torque,and power source, which relate directly with delivery details, it's anybody's guess as to a motor selection. :( Ken
  19. K

    Gear help

    The "stroke volume" is the cross sectional area of the piston times the stroke length...how much air the cylinder holds when full. The delivery rate is the volume of air expelled by the pump over a period of time. You will also have to take into consideration back-pressure if you are exhausting...
  20. K

    Gear help

    So, what is the viscosity of the "substance", what is the desired delivery rate, and what is the stroke-volume of the "pump" you envision. The more details you provide, the more practical the solutions you are likely to elicit here. Ken
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