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Posted by Salmon Egg on May 30, 2009, 11:59 am
 

I apolgizr to this group for having missed "GreenXenon" in the original
post. If I had spotted it, I would have ignored the post altogether.
Instead I gave a flip response which was even more polite that what was
deserved.

Bill

--
Most people go to college to get their missing high school education.

Posted by Gareth on May 30, 2009, 4:11 am
 
GreenXenon wrote:

Electronic signal amplitude is usually measured in Volts not Watts per
meter.

Volts <=> Hz conversion can be done, see:

http://www.national.com/mpf/LM/LM231.html
http://www.national.com/mpf/LM/LM2917.html


--
-----------------------------------------------------------------------
To reply to me directly:

Replace privacy.net with: totalise DOT co DOT uk and replace me with
gareth.harris

Posted by GreenXenon on May 30, 2009, 11:20 am
 
Ok, please forgive me.

An electron volt is 1.602 =D7 10^-19 joules. So let=92s say the amplitude
is measures in volts.

Then, in my hypothetical aforementioned device the input of a signal
that has a frequency of A Hz and a peak-to-peak amplitude of B volts
will result in the output of a signal that has a frequency of B Hz and
a peak-to-peak amplitude of A x [1.602 =D7 10^-19 volts].

In this device, a higher peak-to-peak input voltage [whether or not it
goes below the x-axis of a graph] will result in a higher output
frequency.


A higher input voltage itself will not necessarily result in a higher
output frequency than a lower input voltage. However, a higher peak-to-
peak input voltage will result in a higher output frequency than a
lower input peak-to-peak voltage.

Posted by Jamie on May 30, 2009, 1:37 pm
 GreenXenon wrote:


FM transmitter with a DC blocking Cap on the input!>>.

    You sound like a professor I had in school that did nothing but
spit out physics and chemistry equations to describe something simple
that every one has or done in their daily life!.

   Didn't impress me then, still doesn't..!





Posted by stratus46 on May 30, 2009, 4:39 am
 
Last time I said you discovered radio. Now it appears you've
discovered FM radio. Wow. Progress.

G=B2