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  • 60. Re: Car- fuses, amps and audio whine
    croat_soldier

    Hi, I currently have a phone charger in my car (always on, even with ignition off) and I regularly use the audio feature. It suffers with extreme audio whining only when the ignition is on and alternates with acceleration (i'd guess because of the alternator).

     

    With a bit of research do I need a noise filter? Something like this? http://www.jaycar.com.au/productView.asp?ID=AA3074&keywords=noise+filter&form=KEYWORD

     

    However my phone charger requires an input of 12V 2A. Could i simple throw in a 2A fuse after the 10A DC Noise Filter? Also what sort of input would it require? (tapping in from the fuse box in the passenger side)

  • 61. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    kdboyce

    Hello Ivan,

    Yes...a 2A fuse AFTER the filter should work just fine.

    Ken

  • 62. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    vikash.viks

    hi, i m a student persuing b.tech 2nd yr , i would like to have ur cooperation in d field of electronics to get best knowledge thank u.

  • 63. Liquid Level Sensors
    Coveyjhc

    Does anyone know if there have been any equivalents manufactured for the National LN1042N or LM1830N

  • 64. Re: Liquid Level Sensors
    michaelkellett

    Are you trying to replace a broken one or is this for a new design ?

    If it's for a new design can you tell us what sensor you are using and it may be possible to suggest an approach.

  • 65. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    Natealmond

    Ken and Michael:    Once again this is Nate Almond, the Ancient  One.  By now I have reached the ripe age of 91y/o and have been sidetracked in my efforts at producing an improved hearing aid, what I choose to call an understaning aid.   The reason for the side tracking was the fact that I began studying the structure of human speech and found it had evolutionary impact such that it caused homo sapien to go from just another tribe of something like ape-man to what he now labels himself as "human."  It was the cause of the Cognizant Revolution, call it if you wish, the "missing link,  in the field of paleontology. Ancestors of the hominids used the same language as all other surviving creatures, the common feature being that it was produced sound by means of the vocal chords.  Air from the lungs blowing past the vocal chords, (vibrating membranes)  can produce huge sound levels, right from the instant of birth. It was part of the Darwinian theory of survival of the fittest.  In this case fittist meant developing vocal chords as a protective means.   This continued for more than 2.5 million years of hominid existance in the same manner for all animals excepting homo sapien. About 100 thousand years ago this hominid developed a second  language using  means other than the vocal chords.  The distintively different sounds came from a new source, from the mouth, tongue and lip combination.  And now  the genius idea was born.   The new language was not simply an add-on feature to the old language but was interspersed into the first language to produce the concept of time element into the two languagesystem.  It could now be articulated  such that 'before', 'now' and 'in the future' was part of the new language.  Also, sounding for ideas as greater than, same as, more than, could be articuated.  The new sounds, what is by then  called speech,  became the basis for modern history, science and mathematics of present human existance. Cognizant revolution, indeed! This was a first audible 'publication'. Many thousands of years later, the developemnet of hierographics attempted to put those sounds into a permanent form.

  • 66. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    hughfon1

    There appears to be in existance an L7806cv but I do not find it on the order system

  • 67. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    kdboyce

    Hugh,

     

    The L7806cv is a STMicroelectronics part L7806CV-DG IC REG LDO 6V 1.5A TO220

     

    If Element14 doesn't carry it, you may be able to find it at Digikey.

     

    Ken

  • 68. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    kdboyce

    Nate,

     

    A BIG CONGRATULATION to you on your 91st birthday.  How many don't make it that far?  Furthermore, you still have your brains, and a quest for knowledge and a desire to somehow make the world better for yourself, and in the process, better for others.  Now that is a fullfilled life.  Aside from that I bet you are a real character!

     

    I really am sorry no company has taken up your ideas for possible further development, but overcoming the status quo is always a challenge.  Sometimes you win - other times you don't.

     

    Language is a great thing but the twisting of it we now see in many areas of human endeavor is heart breaking.

  • 69. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    sukandar

    If you type  L7806CVL7806CV into the search box at farnell.com you get a direct hit The order code is 9756094

  • 70. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    passoutlaw3

    I am a new member and wasn't sure to reply to ask a question... 

    If they can fit tiny pixels into a phone making it a 1080 screen why is it taking so long to make 4k pixel tvs?

  • 71. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    kdboyce

    Kriag,

    A good question - to which I don't have an answer.  One factor may be the cost because in TV's you have a much larger screen and thus need higher light output pixels.

    Ken

  • 72. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    lisabellef

    Hi,

     

    I am a design student at Carnegie Mellon University and am making a lighting project using LEDs where when two spheres come together one brightens and the other dims. I have purchsed 67C8928, 89F1394, 05M4554. Could you help me by telling me what else I need or how I might make this happen?

     

     

    Your help is greatly appreciated.

     

    Lillie

  • 73. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    kdboyce

    Lillie,

     

    As I understand it you have purchased 2 proximity switches (the Hamlin parts - 05M4554 and 89F1394) plus the Silonex photocell 67C8928.

     

    The Hamlin parts are ON-OFF devices, while the photocell output varies with light intensity.

     

    You state that you want the LED to brighten in one sphere while the LED in the other sphere dims when the 2 spheres come close to each other.  

     

    Questions:

    Do you want the LED that dims to go out? 

    Do you want the LED light intensity in each sphere to change with distance rather than just dim or brighten when the spheres are close enough?

     

    Ken

  • 74. Re: Have a question about multimedia or audio? Ask our Expert, Ken Boyce
    SGoosman

    This was supposed to be a question for something else that got posted here for some reason.

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