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FW: How should we measure coil efficiency, was neon vs.




From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Wednesday, July 30, 1997 2:48 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: How should we measure coil efficiency, was neon vs.    

Hi John,
            Thanks for correcting your original statement.

Malcolm

> From:   John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
> Sent:   Tuesday, July 29, 1997 2:21 PM
> To:     Tesla List
> Subject:    Re: How should we measure coil efficiency, was neon vs.    
> 
> At 03:56 AM 7/29/97 +0000, you wrote:
> >
> >From:  Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
> >Sent:  Monday, July 28, 1997 3:57 PM
> >To:    tesla-at-pupman-dot-com
> >Subject:   Re: How should we measure coil efficiency, was neon vs.    
> >
> >I must comment on this statement....
> >
> >> From:   John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
> >> Sent:   Sunday, July 27, 1997 11:47 PM
> >> To:     Tesla List
> >> Subject:    Re: How should we measure coil efficiency, was neon vs.
> potenti
> >
> ><snip>
> >>   It should be noted that a large part of the losses in the TC secondary
> >> circuit are due to the coil self capacitance. This capacitance is a loss
> >> because it shorts out (loads) the sec voltage. The sec coil self capacitance
> >> of a small TC is less than a large coil so this type of loss is less with
> >> the small coil which is operating at higher frequencies.
> >
> >Reactive components are not losses - period. Resistive components are.
> >
> >Malcolm
> ><snip>
> >
> >-----------------------------------------------------------
> 
>   Malcolm -
> 
>   That is correct for the normal AC circuit. However, the TC is a dual RCL
> system and changing the coil self capacitance (distributed) of the secondary
> circuit will change the impedance of the circuit. The impedance change also
> changes the effective resistance losses when the frequency is changed.
> 
>   John Couture