REFLECTOR: Circuit Breakers/Switches

Thu Feb 9 20:23:54 CST 2012

Larry,

Good point.  I have a thermistor for a circuit breaker on my IVO switch and it's
worked perfectly.

John

Laurence Coen wrote:

> Tom,
>
> John was talking about solid state relays and not solid state breakers.  Two
> different animals.  I use solid state breakers but they are nothing like the
> ones that you were looking at.  I use rocker switches and PTC thermistors
> plus led indicators to indicate power on and fault.  Mine look and function
> the same but are completely different behind the panel.  Theirs are a more
> elegant solution but mine are cheap and have functioned without a problem
> for years.
>
> Larry Coen
> N136LC
>
> --------------------------------------------------
> From: "Tom Falls" <tomfalls6 at gmail.com>
> Sent: Thursday, February 09, 2012 7:41 PM
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Circuit Breakers/Switches
>
> > I was hoping there was more experience with ztron and/or other solid state
> > CB's. I like the size, price, weight and simplicity of this technology.
> > I'm not inclined to jump on the ztron product until I know they can
> > execute well. I'll hold off as long as I can before purchasing anything
> > and keep researching and hoping ztron or someone else has a proven safe
> > and reliable product.
> >
> > Tom
> >
> > On Feb 9, 2012, at 6:37 PM, Scott Derrick <scott at tnstaafl.net> wrote:
> >
> >> All this worry about solid state circuit breakers is kinduv funny
> >> considering the all glass panel airplanes their are now!!!
> >>
> >> If you want to know what heats up I'd suggest you open up your PC  touch
> >> edge of your CPU!  Have a burn kit handy!! ;-)  Because you are going to
> >> get a major ouch!
> >>
> >> Silicon gets hot when you run enough current through it.  One of the
> >> major limitations of CPU's now is heat dissipation.  Large server farms,
> >> think Google, are mostly water cooled. Thats right water lines running
> >> through the computers!
> >>
> >> Creating a resistor in silicon is just as easy as creating a power
> >> transistor and diode, and those three items could make a handy basic
> >> relay.
> >>
> >> I worked for a short time on the Dreamliner at Raytheon, on the Air Data
> >> system, and I can assure you everything was solid state that had
> >> electricity running through it.
> >>
> >> Scott
> >>
> >> -------- Original Message --------
> >> Subject: Re: REFLECTOR: Circuit Breakers/Switches
> >> From: Mark Magee <edjonesbrady at gmail.com>
> >> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> >> Date: 02/09/2012 04:18 PM
> >>
> >>> Having worked with all the mechanical methodologies over the years I
> >>> can't imagine how these SS breakers work. Particularly for that price.
> >>> What heats up? What releases the circuit from power?? Relays? If so not
> >>> good.
> >>> Very interesting nonetheless and maybe the next step. I'd want to know
> >>> more before putting in my bird however.
> >>> I despise even the thought of an in flight fire...:(
> >>>
> >>> Mark B. Magee
> >>> Sent from IPhone 4
> >>>
> >>> On Feb 9, 2012, at 4:36 PM, Tom Falls<tomfalls6 at gmail.com>  wrote:
> >>>
> >>>> Well that's not encouraging. Anybody out there have good or bad
> >>>> experience with solid state circuit breakers?
> >>>>
> >>>> Tom
> >>>>
> >>>> On Feb 9, 2012, at 3:19 PM, John Dibble<aminetech at bluefrog.com>  wrote:
> >>>>
> >>>>> It was my pitch trim relay.  The first time the output voltage got so
> >>>>> low that the motor quit running.  Had to land with the trim in the
> >>>>> full down
> >>>>> position.  The second time (new relay, same model) it began trimming
> >>>>> up uncommanded.  I eliminated the relay and wired direct to the stick.
> >>>>> Works fine.
> >>>>>
> >>>>> John
> >>>>>
> >>>>> Brian Michalk wrote:
> >>>>>
> >>>>>> What happened?
> >>>>>>
> >>>>>> On 2/9/2012 12:59 PM, John Dibble wrote:
> >>>>>>> Not familiar with these.  I've had bad luck with solid state relays
> >>>>>>> and won't use them again.
> >>>>>>>
> >>>>>>> John
> >>>>>>>
> >>>>>>> Tom Falls wrote:
> >>>>>>>
> >>>>>>>> http://www.ztronlabs.com/products.php
> >>>>>>>>
> >>>>>>>> Anybody have experience or thoughts on these solid state circuit
> >>>>>>>> breaker/switches? They seem simple, clean, light. The 8 channel
> >>>>>>>> unit sells for $189.
> >>>>>>>>
> >>>>>>>> Tom
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> >>
> >> --
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> >> because of his art.
> >> Mary Baker Eddy
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