Search:

Type: Posts; User: Kajunbee

Page 1 of 15 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    The core I used is hitachi amcc100. I mistakenly said that it was 13 turns on core. I initially had 6 turns on core and was seeing the lower voltage. When I went to 13 turns the coupling was much...
  2. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    I was able to wrap 13 turns of coax around a pair of u shaped cores I have. I applied 3 vac across center conductor and measured 1.4 vac on shield wire. When I applied 3 volts to shield wire I...
  3. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    I was wondering if a power transformer could be design this way. But if I'm understanding Easy peasey correctly it wouldn't work. No matter how many turns of a coaxial like conductor you wind on a...
  4. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    Would passing current through outer conductor provide better coupling to inner conductor. As opposed to passing current through inner conductor.
  5. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    I think soft copper could be used. Something with just large enough diameter to pass the wire. It may become work hardened if you coil and uncoil it many times though.
  6. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    Is there any one type of coax that might be better to experiment with. The coax I have laying around is stranded wire on outside.

    - - - Updated - - -



    No foil layer if that makes a...
  7. Replies
    25
    Views
    933

    Closed: Re: Single conductor inside hollow conductor

    Not sure what your asking. Are you implying that current flow will be around the circumference of the hollow conductor.
  8. Replies
    25
    Views
    933

    Closed: Single conductor inside hollow conductor

    If and ac voltage is applied to a conductor inside of another hollow conductor will a voltage be induced in the hollow conductor.
  9. Replies
    10
    Views
    552

    Closed: Re: Residential Wiring Offset Voltage

    Are you sure about that? I have a 8' copper ground rod that is connected at service on side my house. I believe in some installation they connect to rebar through foundation.
  10. Replies
    6
    Views
    305

    Closed: Re: Motor winding Temeparture

    Klaus gave you and example with ventilation I believe. The motor may operate fine but due to low air flow will heat up. This condition I think would cause a drop in current.
  11. Replies
    5
    Views
    409

    Closed: Re: Rotary encoder physical dimensions

    Are the coupling sizes indicating different hole sizes on each end of the coupling.
  12. Replies
    13
    Views
    692

    Closed: Re: What might be wrong with this old piano?

    I was unable to determine polarity of adaptor you bought. Since it powered the Yamaha I have to assume it is center positive also. It looks like your Yamaha specifies a voltage range (9-?vdc). Can't...
  13. Replies
    13
    Views
    692

    Closed: Re: What might be wrong with this old piano?

    The recommended ad-5 is center pin negative from a web search. Your Yamaha adaptor is center positive if I'm looking at photos correctly.
  14. Replies
    9
    Views
    507

    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.
  15. Replies
    9
    Views
    507

    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.
  16. Replies
    5
    Views
    399

    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.
  17. Replies
    5
    Views
    399

    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...
  18. Replies
    5
    Views
    399

    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...
  19. 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.
  20. 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.
  21. 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.
  22. Closed: Re: Smart agriculture with Arduino

    Have you researched lysimeters? Since your only concern is one tree it might be a practical solution.
  23. Replies
    11
    Views
    1,718

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

    I found a part numbered btt 8214 7841 at site named "vintage parts.com". 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.
  24. Replies
    4
    Views
    523

    [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...
  25. Replies
    8
    Views
    804

    Closed: Re: computing rated current for inductors

    A sumida datasheet I found shows a 104NP at T=40c. And the 104RNP at T=30c.
Results 1 to 25 of 373
Page 1 of 15 1 2 3 4