[Boatanchors] Carbon Mic Rejuvination

[rbethman]

Bill,

I agree completely!

I was commenting on John's post.

The only possible way to achieve "power gain" in an air or water system 
REQUIRES something in the system that "introduces" energy.

It would have to have an increase in pressure or flow rate, i.e., a pump 
or compressor.

Bob - N0DGN

On 3/16/2013 1:44 PM, Bill Carns wrote:
> As a newcomer to the list, I hate to be argumentative, but no passive
> element has Power Gain..  By definition, Power Gain is some expression of
> Power Out divided by Power in where this number must be more than one, or
> the db expression of same.
>
> As a physicist, and electrical engineer, I can tell you that no passive
> element has gain, because the laws of physics would be violated.
>
> We all know that Pin = Pout in a line transformer for instance. (Less of
> course any small losses)... But Pout cannot be more than Pin.
>
> There has to be "Conservation of energy" in any system ....which basically
> says there is no free lunch.  If you do not apply external power - like in a
> supply to an amplifier, then a passive element like a water valve, or a
> passive modulator like a carbon mic, cannot have gain.
>
> Sorry....just could not let that misunderstanding and misstatement pass
> without comment.  Perhaps you are confusing "Force" for power...  They are
> not the same.
>
>
>
> Bill
>