Re: Of Mice and HV (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 18 Apr 2006 08:21:49 -0700 (PDT)
From: Yurtle Turtle <yurtle_t@xxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Of Mice and HV (fwd)

You could use these:

http://www.hot-streamer.com/adam/garage/Maxwells_100_mF_10kV_1.jpg

10kJ ought to take care of them!

Adam

--- High Voltage list <hvlist@xxxxxxxxxx> wrote:

> Original poster: Steven Roys <sroys@xxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Thu, 13 Apr 2006 22:38:49 -0700 (PDT)
> From: J. Aaron Holmes <jaholmes@xxxxxxxxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Of Mice and HV (fwd)
> 
> Hmmm...don't know about one shot from a photoflash
> cap.  But you can get 100kV "stun guns" for about
> $10
> on eBay.  And they're battery powered.  I've gotta
> believe one of those would be the end of a mouse. 
> If
> not, you could at least outfit each trap with a
> holding cell for stunned mice and a "no vacancy"
> indicator to let you know when it's time to take it
> over to your neighbor's yard and unload ;-)  You'd
> still probably want a microcontroller or timer IC to
> govern the firing of the stun gun so that it didn't
> get stuck on ("overkill").
> 
> I've often thought of creating a pole pig-powered
> "crow zapper" mounted to a garbage can.  I'd toss a
> few banana peels in on the way to work, and come
> home
> to find a few more sooty black star-shaped marks on
> the rim of the can ;-)  Too dangerous to implement,
> but fun to think about.  They're nasty critters,
> too.
> 
> Regards,
> Aaron, N7OE
> 
> --- High Voltage list <hvlist@xxxxxxxxxx> wrote:
> 
> > Original poster: Steven Roys <sroys@xxxxxxxxxx>
> > 
> > 
> > 
> > ---------- Forwarded message ----------
> > Date: Tue, 11 Apr 2006 07:20:03 +0930
> > From: Matthew Smith <matt@xxxxxxxxxx>
> > To: High Voltage list <hvlist@xxxxxxxxxx>
> > Subject: Of Mice and HV
> > 
> > Greetings All
> > 
> > CONTENT WARNING: If you are distressed by nasty
> > things happening to
> > vermin (small furry creatures to those not
> infested
> > with them), please
> > do not read any further.
> > 
> > They don't make 'em like they used to!  Our house,
> > completed just over
> > two years ago (actually not completed, but that's
> > another story!)
> > appears to have been built to accommodate rodents
> > just as comfortably as
> > humans.
> > 
> > Snap traps have proved anything but reliable (bait
> > gone, trap still set)
> > and when they do operate, frequently kill in an
> > unclean manner.
> > 
> > So, I have decided to build an electric mousetrap.
> 
> > Idea is simple:
> > mouse enters trap and has to pass through a narrow
> > gap between two
> > aluminium plates arranged in a V.  (Mouse enters
> the
> > larger part of the
> > V.)  One plate is fixed, the other against light
> > spring tension so that
> > the subject has to push between the two plates to
> > get to the bait.
> > 
> > Plates are connected to a charged capacitor. 
> > Charging will be from a
> > PWM supply driven by a microcontroller which stops
> > when capacitor
> > voltage reaches an upper threshold and starts
> again
> > once it has
> > discharged (mostly through the feedback voltage
> > divider) down to a
> > minimum voltage.  The idea being that this device
> is
> > battery-operated
> > and tries to save power.
> > 
> > Does anyone have any idea what minimum voltage I
> > would need to apply to
> > guarantee fatal fibrillation?
> > 
> > I had considered powering from a disposable camera
> > supply (no
> > microcontroller - simply pulse the start button
> when
> > the neon goes out)
> > but, whilst photoflash capacitors can give us a
> > ghastly bite, is the
> > 300V or so enough to take out a mouse in its
> > insulating fur coat?  I've
> > serviced equipment before where mice have gone in
> a
> > mains (240V) PSU and
> > have blown the fuses but am still unsure about the
> > certainty of a clean
> > kill.
> > 
> > Once I've got this idea working, I want to
> motorise
> > it so that the
> > defunct rodent can be cleared from the plates and
> > the trap be readied
> > for another "client".
> > 
> > Cheers
> > 
> > M
> > 
> > -- 
> > Matthew Smith
> > IT Consultancy & Web Application Development
> > http://www.kbc.net.au
> > 
> > 
> > 
> > 
> 
> 
> 
> 


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