Type: Posts; User: Kajunbee

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  1. Replies

    Closed: Re: Simple remote led stay on

    A very quick blinking red light. It wasn't a glow as you say. I'm not sure why.

    - - - Updated - - -

    Do some remotes use a led other than ir maybe.
  2. Replies

    Closed: Re: Simple remote led stay on

    I've tried viewing ir led before with my iPhone 6. I could not view it with forward facing camera. I believe it has a filter. I could see it with backward facing camera.
  3. Replies

    Closed: Re: Furuno crt screen burn

    To clarify the question , the phosphor actually falls away and the exposed glass is damaged. As opposed to the phosphor remaining but being burnt and discolored.
  4. Replies

    Closed: Re: Furuno crt screen burn

    The screen is also getting more difficult to see in daytime. I guess this is also and associated problem with the phosphor screen. We have made a makeshift shield extension which makes the screen...
  5. Replies

    Closed: Furuno crt screen burn

    We have a 4 kw open array furuno radar. After many years of s/b time the lettering is permanently burned into crt screen. Can someone give me insight into why this happens. I've never heard mention...
  6. Closed: Re: LTspice sim opf Synchronous 2 transistor forward

    Try changing k l3 l4 1 to k2 l3 l4 1. Not sure if it matters but maybe worth a try.
  7. Closed: Re: How to move metal elements via magnetic waves?

    You say that you will be entering the coordinates. If that's the case you could have a CNC machine type setup. You could use a much smaller electromagnetic also.
  8. Closed: Re: Attract fish by sound, light or anything else

    When the shrimp come to the light the fish that eat them won't be far behind. Caught many a speckled trout under the lights of oil platforms.
  9. Closed: Re: Smart agriculture with Arduino

    Have you researched lysimeters? Since your only concern is one tree it might be a practical solution.
  10. Replies

    Closed: Re: Can anyone help me identify this IC?

    I found a part numbered btt 8214 7841 at site named "vintage". There was no information about the part at the site. I'm doubtful but maybe if you contact them they can give you more info.
  11. Replies

    [SOLVED]Closed: Transformer core flux

    In and ideal transformer all the flux is within the core. So if the flux is contained within the core how can it interact with the secondary winding. Does the flux not have to actually expand out...
  12. Replies

    Closed: Re: computing rated current for inductors

    A sumida datasheet I found shows a 104NP at T=40c. And the 104RNP at T=30c.
  13. Closed: Re: TO247 FET mounted in "SMD" fashion and pressurized against heatsink with "foam"

    I guess you would prefer a thermally conductive foam. Not sure but it seems to me that a thermally insulating foam could be counter productive.
  14. Closed: Re: PV panel oriantation vs horizon shading in winter

    Yes , I think there are some gains to be had by placing panels horizontal.What i wonder about is that the shade will then effect a larger portion of the panels. Suppose you have even shading across...
  15. Closed: Re: PV panel oriantation vs horizon shading in winter

    It doesn't matter whether the panel is vertical or horizontal. I guess your talking about the same panels from your previous thread. I'm not and expert but I agree that you would be better off laying...
  16. Replies

    [SOLVED]Closed: Re: Solar panel allowable mounting overhang

    I think you need to ask the manufacturer this question. Personal opinions don't mean much when it comes to product warranties. Looking at the axitec installation guide it recommends 250 to 350 mm...
  17. Replies

    Closed: Re: removing anodized coating from aluminum

    If your wanting to remove it all oven cleaner seems to work well. Just take care to remove the residue as well as you can. Maybe soaking in vinegar solution afterwards.
  18. Closed: Re: Digital multimeter appears to have measured voltages lower than expected.

    Search " review of xl830l - lygte info".
  19. Replies

    Closed: Re: prevent nmos from overvoltage damage

    The item description at eBay gives 0.310 ohms resistance on primary and 9.2k ohms on secondary winding.
  20. Closed: Re: Tubing for offline Flyback SMPS transformer

    There is a 2 page version of that datasheet that gives more information. My search was " enameled copper wire - Farnell".
  21. Replies

    Closed: Re: HANTEK 5102P Oscilloscope

    [QUOTE=saramah;1637555]wave width and amplitude of 230 rms(p-p 320) directly with 5102p hantek.
    actually i used Proteus but have no exp on hard scope. would u suggest site where can i get through...
  22. Closed: Re: relay for AC 230V circuit check and relay datasheet check help

    I'm not sure if all transformer are alike. Sometimes there is a thermal fuse that is built in to the transformer. I found this in a bad transformer that I was trying to salvage the copper.
  23. Replies

    Closed: Re: AC motor brake system

    You said you need the motor stop in 2 seconds previously. Have your requirements changed.
  24. Closed: Re: Weller TCP-01 soldering iron question / problem with thermal switch

    I believe they regulate there temp by curie effect.
  25. Replies

    Closed: Re: Better understanding of capacitor charging

    The information given has been extremely helpful. I have a much better understanding now but there are couple things I'm unsure about. We start with a "energized " capacitor and the plates are a...
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