Was: [SEL] Is't true? Now something to look at

[ED]

Steve,
The " Hall Effect transistor " is not a transistor. It  is a Hall Effect
sensor in an integrated circuit, hopefully a Hall Effect switch. It probably
looks like a transistor. I am thinking about using one to trigger a
Capacitance Discharge Ignition for my Stover CT2 until I can get the right
magneto.

Ed Stoller
New Fairfield, CT


----- Original Message ----- 
From: "Steve Gray" <segray at mlode.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Monday, December 13, 2004 2:20 AM
Subject: Re: Was: [SEL] Is't true? Now something to look at


> Hi All -
>
>    Thanks to all for the comments!
>
> To Ron - To answer your questions about the Mery's ignition; yes, I am
> also using the Hall Effect transistor along with the solid state "buzz
> coil" driver and model high tension coil. This was the thing that
> probably gave me the most fits, and I ended up going back to my old
> career and oscilloscope, and redesigning some of the circuit. I really
> like the idea of the "pointless" ignition and the Hall transistor worked
> out great. The main problem was two fold: lack of dwell angle and the
> oscillator circuit not performing as advertised. In a nut shell, I
> nearly tripled the circuit's frequency while still trying to stay within
> the saturation specs of the coil. Doing this overcame the lack of dwell
> (on time) and literally was the difference between the engine running
> and not running. As for cooling, I'm doing nearly the same as you are.
> The little brass belt driven pump shown in the pictures is what I
> dreamed up to circulate the water from a custom 'tank'. The tin covered
> 'tool box' next to the engine contains the propane tank, regulator,
> valve and a battery switch for the ignition. The tank, box and engine
> platform will eventually bolt to an oak top with concealed wheels,
> handle and legs for moving and showing.
>
> To Marv - This is Mery # 223. I recently asked Roland Morrison, the
> kits' engineer, about how many of these he knows are running. He says
> he's aware of about 20 throughout the world that actually run now. I
> just recently coaxed the first person in Japan to buy a kit.
>
> To Judge Tommy - Having never gone to school for machining, I consider
> myself darn lucky to be able to do as well as I do. Thing with this
> stuff, you're ALWAYS learning!
>
> Again, thanks to all!
>
> - Steve
>
> -- 
> Steve Gray
> Member EDGE & TA, Br. 49 & 13
> Sonora, California USA
> e-mail:   segray at mlode.com
> Home page:   http://www.oldengineshed.com
>
>
>
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