[Prev][Next][Index][Thread]
Re: SPDT Snon-rotarySG
--- Tesla List <tesla-at-pupman-dot-com> wrote:
> Original Poster: Bryan Steinbach <warp27-at-juno-dot-com>
>
> Hello Everyone
> I have been thinking of a possible subsitute to a
> SRSG that would not
> require a sync motor. I would like to know if there
> are any flaws that I
> have missed.
>
> My idea is to have a metal armature, which would be
> one side of the gap,
> that vibrates between two contacts which are shorted
> together, which make
> the other side of the gap. The armature is weighted
> so its natural
> frequency is a multiple of 60(or 50)hz. A magnet
> would be placed near
> the bottom(or just a lump of ferrous material) with
> a coil next to it.
> The coil would be powered by the mains supply and
> draw only a few watts.
> If all goes as it is supposed, the coil would pump
> the armature until it
> is in full swing, where it would get close to one
> contact, cause the gap
> to fire and then swing towards the other contact
> causing the gap to fire
> again. The firing of the gap would be locked in
> sync just like a
> rotating gap. Technically I could do it with only
> one contact but having
> two gives 50% duty cycle to let them cool down. Or
> more than two
> contacts could be used by placing the additionals
> above the armature.
> Would I be able to adjust the natural frequency of
> the armature close
> enough to the 60hz multiple? Or is it not worth the
> hassle and I should
> just go to the junk store and spend $10 on a fist
> sized 1800 rpm already
> sync-ed motor?
>
> Bryan
>
>
Such a system minus the HV and spark gaps is used in a
goldfish tank air pump. I think a possible flaw would
be that the phase angle would be harder to control.
Ross Ogden
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://messenger.yahoo-dot-com