Article View: comp.dsp
Article #2482Re: Can this be accomplished?
From: Richard Owlett
Date: Mon, 11 May 2009 11:25
Date: Mon, 11 May 2009 11:25
48 lines
3511 bytes
3511 bytes
GreenXenon wrote:
> On May 10, 7:13 pm, Jerry Avins <j...@ieee.org> wrote:
>
>
>>GreenXenon wrote:
>
>
>>>On May 10, 5:53 pm, Jerry Avins <j...@ieee.org> wrote:
>
>
>>>>GreenXenon wrote:
>
>
>>>>>Hi:
>>>>>Does a device that switches frequency [in number of Hz] with peak-to-
>>>>>peak amplitude [in number of in electron(s)-per-second-per-square-
>>>>>meter] � and visa versa -- exist? If not, is it possible to construct
>>>>>one?
>>>>>In this device, the input of a signal that has a frequency of X Hz and
>>>>>a peak-to-peak amplitude of Y electron[s]-per-second-per-square-meter
>>>>>will result in the output of a signal that has a frequency of Y Hz and
>>>>>a peak-to-peak amplitude of X electron[s]-per-second-per-square-meter.
>>
>
>>>>The question is based on a completely erroneous assumption. Electrons
>>>>per second per square meter is a current density, if an electron's
>>>>charge is accounted for. In electronics, it is usually current, not
>>>>current density, that matters.
>>
>
>>>So the amplitude is determined by the amperage?
>>
>
>>No. With real signals, amplitude is often taken to be voltage, although
>>power is sometimes used (think decibels).
>
>
> So in the device I'm thinking of [which I posted in the start of the
> thread] the amplitude would be determined by volts? Or would it be in
> watts-per-square-meter? Or just watts?
1. Answer to 1st paragraph of original post is transducer.
As to 1st transducer you grew up with your eyes glued to it. Jerry
probably didn't see one until his teens, unless hes went to 1939
World's Fair.
2. Answer to this post's question - Which do you wish to measure?
Technical Details
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