REFLECTOR: Circuit Breakers/Switches

Thu Feb 9 19:41:48 CST 2012

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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> Mary Baker Eddy
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