No image on memory card error

Started Jan 30, 2015 | Questions thread
Scottelly
Scottelly Forum Pro • Posts: 14,217
Re: No image on memory card error

xpatUSA wrote:

Scottelly wrote:

The software glitches can be a result of a power surge, which could be related to the battery, the temperature of the camera, the humidity level, or some other issue, like corrosion in a circuit.

Scot, all of the above seems to be pure supposition.

What is the nature of this "power surge"? How does a battery provide a power surge from it's steady voltage? How does camera temperature causing a "power surge", igualmente humidity level?

and "corrosion in a circuit" !?

Sorry to get pedantic, but that paragraph should not stand unchallenged. Hopefully you have a link or two - like to an IEEE paper about power surges and their causes, for example . .

I am not a scientist. I am a witch doctor.

The fact is Ted that there ARE power surges in electronic equipment, whether you attribute it to battery power levels or something else. (i.e. the capability of capacitors to maintain power levels, when power is drawn away from them in a variable way, which is something that happens as processing requirements change). As I'm sure you are well aware Ted, all sorts of unexplainable things happen in electronics. My suppositions are not meant to be scientific analyses of the actual problem that occurred . . . just suggestions of what might happen in a case where there is a memory card error of some type.

I visualize electricity flowing in a computerized device somewhat the way water flows in the plumbing system of a house or large, complex, apartment building. Do you know much about that? The pressure surges cause all sorts of weird things to happen, and sometimes they don't come from outside the building. Often the pressure surges might happen based on what is happening inside the building.

As a motor switches on or ramps up in speed, or makes an effort to do something, like change direction, it will draw differing amounts of electricity from the battery. Sometimes the electricity is "buffered" by capacitors enough that such operations don't have a significant affect on other components in the system. Sometimes not. I don't believe that most electrical engineers could really explain to you what is going on, when memory card errors occur, considering they don't know the inner workings of either the computer chips involved, the memory card circuitry, or the entire chain of circuitry and electric motors involved in the process of a memory card error occurrence. Then there's the software/firmware to think about. How are power issues handled in the system, with regard to software processes? As you are well aware, the systems are incredibly complex and unpredictable . . . even by the best analysts, whether they are scientists or not. Then add the possibility of crud on the contacts of the battery, the memory card, or the contacts in the camera. Even NASA can't predict such things. It's like trying to predict where a hurricane will go next. All the supercomputers in the world analyzing all the thousands of data points from surface and sub-surface sensors on the ocean and land, satellite imagery, and even the data collected from weather balloons won't make it possible to be certain of the prediction(s) that might be made.

This is why you need to be a witch doctor, like me, to know these things Ted.

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Cheers,
Ted

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