Androcles wrote:
> "Evgenij Barsukov" <evgenij_b_no_spam@[EMAIL PROTECTED]
> wrote in message
> news:fod86n$dpg$1@[EMAIL PROTECTED]
> | Androcles wrote:
> | > "Steve" <no@[EMAIL PROTECTED]
> wrote in message
> | > news:wbqdnTZMuJIrizfanZ2dnUVZ_qiinZ2d@[EMAIL PROTECTED]
> | > | Evgenij Barsukov wrote:
> | > |
> | > | > Steve wrote:
> | > | >
> | > | >> John Bailey wrote:
> | > | >>
> | > | >>> Is that a fact and reason based answer or just a guess? A
battery
> is
> | > | >>> not as efficient as a capacitor and there is a theorem from
> sophomore
> | > | >>> EE that "proves" no more than 1/2 the energy stored in a
capacitor
> can
> | > | >>> be recovered.
> | > | >>
> | > | >>
> | > | >> Maybe at some EE correspondence school in outer Elbonia, but
not
> | > | >> anywhere creditable. Most capacitors are nearly 100% efficient
at
> low
> | > | >> frequency and moderate charge/discharge rates, I have no idea
where
> | > | >> you came up with some "proof" that no more than half can be
> recovered.
> | > | >
> | > | >
> | > | > Sorry man, it might not be obvious, but this effect is true,
easily
> | > | > provable based on the differential equation describing capacitor
> | > | > discharge and known to every electric engineer:
> | > | > http://www.smpstech.com/charge.htm
> | > |
> | > | But we're not talking about the first-year method of charging a
> | > | capacitor from an ideal voltage source through a resistor are we?
Nor
> | > | are we talking about discharging through a resistor to a purely
> | > | resistive load, are we?
> | > |
> | > | >
> | > | > As other people have stated earlier, this applies only for
straight
> | > | > linear capacitor / resistor systems without inductance.
> | > | >
> | > | > Switching systems with inductance is a different story and they
can
> | > | > be 90-95% efficient.
> | > |
> | > | EXACTLY my point when I made the first rebuttal!! There is no
> "theorem"
> | > | that states with any sort of generality that "no more than 1/2 the
> | > | energy stored in a capacitor can be recovered." In fact you can
get
> | > | nearly 100% out as heat, should that be your goal (as it often is
in
> | > | pulsed welding systems, for example). Period. End of story.
> | >
> | > At the EE correspondence school in outer Elbonia, if you drain
> | > a tank of water you can only put half the water back, easily
> | > provable based on the differential equation describing alcohol
> | > ingestion and known to every hydraulic engineer that is currently
> | > unemployed and wondering why he can't get a job even as a
> | > plumber's mate in inner Elbonia, let alone as a car mechanic's
> | > tea boy and general gofer in London.
> | >
> | > Might I suggest that Evgenij Barsukov is ineducable and suitable
> | > plonk material?
> |
> | You want to measure credentials or salary?
>
>
> Sorry man, it might not be obvious, but this effect is false, easily
> provable based on conservation of energy as known to every
> mechanical engineer.
> http://www.kettering.edu/~drussell/Demos/SHO/damp.html
>
I knew you will not accept the challenge. You remind me of that blue
cube/spring oscillator in your link - pops up without any obvious
reason, scrabbles a few meaningless one-liners and than disappears again.
Why don't you come to the table and play, instead of just bringing
the ping-pongs to the real players?
Regards,
Evgenij
|
