Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. ronhotchkiss

    Pro/E 2000i2 Smart Buttons

    I think PTC tried to do this for us. If you notice that when you create a new part in 2000i2 it already has datums and layers. Although there is a 100% chance that these are not the layers you are used to using, they are provided. I found this frustrating also. I have not tried to, again...
  2. ronhotchkiss

    Harmonics

    Does anyone have a link or document that explains harmonics in such a way that it is presentable to a non- or at best semi-technical audience? I have to do a presentation on this topic and I am looking for resources. Thanks for any info provided.
  3. ronhotchkiss

    Which 3-D Cad Software is Best?

    tclere - My post was intended to be funny, not serious. Please do not be offended by it. DGP - My experience has been with Pro/Engineer. I have used it since Release 18 and now I use 2000i2. I find it extremely powerful, stable and able to handle very large assemblies (300+ parts). This...
  4. ronhotchkiss

    Plastic insulating material Vo

    The standard to reference is UL 94. This deals with the flammability of materials. V0 is a mediocre rating. And as tcampbel stated, check it out at www.ul.com.
  5. ronhotchkiss

    Pro/Engineer Settings Guide

    Thanks cef3rd! A very nice reference.
  6. ronhotchkiss

    Circuit board pad layout.

    Keep in mind that IPC dictates standard practices. This is not to say that you will not have situations that will not meet this standard to the letter. The only caution is that you are confident that the board can be manufactured (in other words, the manufacturing facility can make it and make...
  7. ronhotchkiss

    To Upgrade or Not.....

    I have been using 2000i for several months. It is much better than 19 or 20. They have added lots of extremely useful shortcuts to the model tree and other locations.<br> <br> I strongly recommend using this version.<br> <br> Also, in regard to upgrading from older versions: the statements...
  8. ronhotchkiss

    Dry Contact

    Dry contacts simply refer to a relay (or other device) contact that does not supply voltage. It is simply a switch. On the other hand, a wet contact is a contact that does supply voltage/current (has a source already connected).<br> <br> Dry contacts are generally more versatile but it does...
  9. ronhotchkiss

    Intrinsically safe

    What type of circuits?
  10. ronhotchkiss

    In-wall, low voltage wiring requirements

    Check the NEC.
  11. ronhotchkiss

    ESD plastics

    Call GE Plastics (or other manufacturers). They will help with all questions like this. Use the web to find them.
  12. ronhotchkiss

    ???Load circuits for a lighting power supply???

    One aspect of this type of problem that is often overlooked is the amount of current available from your source. For instance, if you are close to a sub-station, you have more fault current available than if you were 20 miles away. Another example, would be to compare the current that you can...
  13. ronhotchkiss

    Structural Thermoplastic Wanted

    Call the plastic manufacturers and ask for their recommendations. GE has been helpful to me.<br> <br> 413-448-7333
  14. ronhotchkiss

    ProE Software

    I would also like to submit my appreciation for the PTC training. It is expensive, but you will know how to use the program when the training is complete. The instructors have been helpful to me when I have had a specific question to ask. Take a look at PTC's website. They have many online...
  15. ronhotchkiss

    fault current calculation software

    A company called Technical Training Group (800-874-8883) offers a training course on this topic (Short Circuit Analysis). They have created a quick and easy method on how to do it. You may be able to call and buy the manual if you cannot take the course. The calculations are simple and...
  16. ronhotchkiss

    Lexan 503

    Has anyone had experience using this material for outdoor applications? How does it standup to weather and UV?
  17. ronhotchkiss

    ESD Circuit

    I agree with DareDevil. Just keep an eye on the operating voltage of your circuit (do not set the clamp voltage to low). A few zeners, transzorbs or MOVs in parallel with some caps to filter the circuit should do the trick.
  18. ronhotchkiss

    Simple Switch

    The relay suggested is a good idea. Remember you are controlling AC with the output of your transistor. To get around the idea of a common ground, use an opto isolator or simply power the mechanical relay with the microcontroller output. Either of these methods will eliminate the need for a...

Part and Inventory Search

Back
Top