REFLECTOR: Circuit Breakers/Switches

Thu Feb 9 22:14:09 CST 2012

I like fuses. Simple, cheap.
----- Original Message ----- 
From: "Tom Falls" <tomfalls6 at gmail.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Thursday, February 09, 2012 8:41 PM
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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>>
>> -- 
>> I would no more quarrel with a man because of his religion than I would 
>> because of his art.
>> Mary Baker Eddy
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