Search results

Search Forums New Posts
  1. S

    Protection from electromagnetic pulse

    Brother, you're describing a line-voltage surge/spike. Just in case, having worked in industrical electronics most of my life, I'd look into RFI/EMI (Radio Freq/Electro-Magntic Interference) for your close proximity circuits. Replacing the 30m cable with a shielded cable may be enough to...
  2. S

    Up Yours Microchip!

    It's because by the time the product you're buying gets to market, the manufacturer is already preparing to market the next generation new and improved version. They're not going to waste time documenting and supporting something that is 'obsolete', by the time it hits the market. They've...
  3. S

    Protection from electromagnetic pulse

    Yeah, more information here. Are you actually sure it's an electromagnetic pulse (transmitted through the air) that you're dealing with. Or line surges when your other machinery kicks on or off? There are a lot of commercially available shielding parts available from a lot of manufacturers...
  4. S

    Anode vs. Cathode

    We've had this discussion before. I'm outnumbered here, but I'm still a 'electron flow', rather than 'hole flow' guy, for current flow. (But I grudgingly agree, that everyone agrees about what the anode/cathode actually do).
  5. S

    dc motor runs too fast

    Do you only have two connections to your DC motor? I've seen some that have several possible connections, to allow you to select a lower run speed.
  6. S

    LH2715 Advanced Micro Devices

    34335 is the Manufacturer Identification Code for Advanced Micro Devices. It's a code used for a national database that identifies companies. If you look in a Tektronix or Hewlett Packard manual, you will find a page of manufacturers that supplied the parts to build the instrument. Each...
  7. S

    LH2715 Advanced Micro Devices

    I'll try Pacific Softworks. Still no luck with Luke Systems. I found some vendors (like CTG) who list Luke Systems as a company they handle, but when I inquire to these other companies for info on Luke Systems, they ignore me. I'm beginning to think Luke Systems folded.
  8. S

    LH2715 Advanced Micro Devices

    LH2715 Pictures These are the pictures of the device: Advanced Micro Devices Logo, Part Number, Mfgr ID, Date Code.
  9. S

    AM receiver not working

    Here's my input: 1) Make sure your antenna is somewhere where you can pick-up the signal. I can't can't AM inside the building where I work at all. 2) make sure your assembly is not in close proximity to anything that is going to drag down your AM input signal. Earth ground, Radio or...
  10. S

    Help toID transistor manufacturer

    davenn's right, not enough info, a picture would help. You've described potentially a lot of different manufacturers. My experience is 'BC' prefix is usually European mfgr. Who knows, maybe Mercedez actually had some devices made with their logo on them. We don't know where you're at, or...
  11. S

    HELP!!! Maytag Circuit Board

    That wasn't a cap at 'MOV1', that was an MOV (they just look like caps). Metal Oxide Varistor. It did what is was supposed to do, absorbed a high voltage spike, unfortunately, the spike also destroyed it. You'll have to guess about the resistor, depending on the circuit. The MOV is rated...
  12. S

    How to identify different film capacitors

    Just remember, a lot of those prefix letters are generated by the manufacturer, and not all manufacturers use the same prefixes. Good luck with the parts identification. It's fun to find components you have a use for.
  13. S

    LH2715 Advanced Micro Devices

    Still checking. Got four different phone numbers for two locations in CA for Luke Systems, they're all disconnected, as well as the web-site address. Hope these guys are still in business, but it's not looking good right now.
  14. S

    Toshiba CRT TV Model 21S1ES- No picture

    I just thought of one other thing to check. If you've got the remote for the TV, or if you can access the information from your front panel push-buttons on the main menu: Check to make sure your tuner is SELECTED to the correct signal you're trying to read. I don't know all of the possible...
  15. S

    Toshiba CRT TV Model 21S1ES- No picture

    Most all of the TV's nowadays are made in China, so that's not unusual. The issue may be for what market the TV was made (U.S., U.K., or most probably Asia or the Pacific Rim where you are). I agree, the set was probably made for your country. Like sheldontv said, you should be checking to...
  16. S

    Large ring tongue lug terminal manufacturer?

    They're solid silver-colored, but I suppose they could be some kind of alloy. (As opposed to plated copper). I crimped one, and it folded with very little physical resistance to pressure. (As opposed to the brute force I usually have to use to crimp a terminal lug this size) I'll keep...
  17. S

    How to identify different film capacitors

    Good luck. The only way I can tell for sure is to find the company logo and Google the part number. Identification used to be easy, now the way the encapsulate all the different components, sometimes you can't even tell if you've got a capacitor or not.
  18. S

    Large ring tongue lug terminal manufacturer?

    I just picked-up a bag full of large (stud size) ring tongue lugs, made for probably a 8-gauge AWG wire. They're stamped 'RD705', with no company ID. I was wondering if anyone is familiar with this part number and might know who made them. Of particular interest to me, is that they are very...
  19. S

    Toshiba CRT TV Model 21S1ES- No picture

    My bad, I thought you were in the U.S. I'm not familiar with what other countries are using. Let me comment on something I posted once before about an issue like this: I used to be in the military, and was stationed overseas. Stuff we bought out there, usually came with selector switches for...
  20. S

    LH2715 Advanced Micro Devices

    Wow, I'll give them a shot. Thanks for the contact point. I found it hard to believe AMD would 'search' for data on one of their own devices for two months, and then tell me they couldn't find anything. Maybe this Luke Systems got the old data sheets.
Top