Re: sparkless rotary spark gap (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 6 Aug 2007 10:44:39 -0500
From: resonance <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: sparkless rotary spark gap (fwd)




The brittle tungsten would explode sending sharp shards all over the room.

Most RSG wheels have a very slight wobble due to imprecision in the motor 
bearing that supports it.  The 1-5 mill wobble factor makes it impossible to 
allow the precision of contact with the rotating wheel.


Dr. Resonance

Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, August 06, 2007 7:43 AM
Subject: Re: sparkless rotary spark gap (fwd)


>
> ---------- Forwarded message ----------
> Date: Mon, 06 Aug 2007 05:18:32 +0000
> From: ameen_ghavam@xxxxxxxxxxx
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: sparkless rotary spark gap (fwd)
>
> the gap would still open to alow the cap to charge, but I was thinking
> about what would happen if at each presentation, the rotating electrode
> physicaly touches the stationary for an instant.
>                                       Cheers,
>                                            Ameen Ghavam
>
> -------------- Original message -------------- 
> From: "Tesla list" <tesla@xxxxxxxxxx>
>
>>
>> ---------- Forwarded message ---------- 
>> Date: Sun, 5 Aug 2007 22:01:05 -0500
>> From: resonance
>> To: Tesla list
>> Subject: Re: sparkless rotary spark gap (fwd)
>>
>>
>> The air turbulence of a RSG helps significantly to provide proper 
>> quenching,
>> ie, disconnecting in the primary circuit to allow the sec coil to "ring" 
>> at
>> its resonant frequency. It also keeps the electrode tips cool ---  
>> something
>> an opening and closing mechanical gap could not do properly.
>>
>> To charge a cap you need the contacts apart, then they close to discharge
>> the cap. If the contacts stay closed the power transformer is directly
>> shorted and no current flows into the cap --- it just loops around back 
>> to
>> the xmfr. It would be difficult to mechanically open and close the spark
>> gap --- a rotary motion makes the process much easier especially with 
>> high
>> power coils.
>>
>> Modern coil design is beginning to totally eliminate the spark gap and 
>> all
>> it's high heat/light losses. IGBT switching is the wave of future coils.
>> At present we are working on a project using a microprocesser to provide
>> complete control over all switching elements, ie, pulse width, pulse
>> duration, power level, etc. EE Steve Ward is working on the initial 
>> design
>> of this system.
>>
>> Regards,
>>
>> Dr. Resonance
>> Resonance Research Corp.
>> www.resonanceresearch.com
>>
>>
>> ----- Original Message ----- 
>> From: "Tesla list"
>> To:
>> Sent: Sunday, August 05, 2007 8:33 PM
>> Subject: sparkless rotary spark gap (fwd)
>>
>>
>> >
>> > ---------- Forwarded message ---------- 
>> > Date: Mon, 06 Aug 2007 00:58:02 +0000
>> > From: ameen_ghavam@xxxxxxxxxxx
>> > To: Tesla list
>> > Subject: sparkless rotary spark gap
>> >
>> > Alright, I'm no exptert, but I can't seem to see why it's
>> > absolutely necessary to have a rotary gap spark as suppose to just
>> > touching electrodes. If your electrodes touched, there would be no 
>> > worries
>> > about quenching or overheating, but the capacitor still discharges. 
>> > This
>> > does mean, however, that the circuit resonates a lot longer and gives 
>> > the
>> > capacitor less charging time. But it could be a fair tradeoff 
>> > considering
>> > that more energy overall is transfered into the secondary. The 
>> > efficiency
>> > may not improve, but no quenching or overheating worries, just physical
>> > erosion to the electrode.
>> > Does anyone see a reason why that wouldn't be a
>> > good idea?
>> > Ameen Ghavam
>> >
>> >
>> >
>>
>>
>>
>>
>
>
>