No image on memory card error

Started Jan 30, 2015 | Questions thread
xpatUSA Forum Pro • Posts: 16,057
Re: No image on memory card error

Scottelly wrote:

xpatUSA wrote:

Scottelly wrote:

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'll ask again - what is a "power surge"?

Maybe I'm using the term incorrectly Ted. In my uninformed opinion a power surge is a fluctuation in power that is greater than what is typical for a system. What might be considered a power surge in one system could actually be considered a very smooth flow (and I might be using these terms incorrectly, because I am such a layman) of power. To me, a power surge is similar to what is experienced in a home, when a lightning strikes nearby and some electronic equipment gets "burned out" or a light bulb or two (or more) gets blown out, because there is a "power surge" in the electricity of the house, even though it might not burn out fuses or trip circuit breakers.

You may think of what I am calling a power surge as a voltage spike.

I have bought a number of "surge protector" devices over the years. That is why I call them "power surges" . . . even though technically such a thing might not exist, in the electrical engineering world. There is a reason they're called "surge" protectors . . . even if the reason is purely about marketing the products. There's also a reason why I call it a "power" surge, rather than an electricity surge or electricity spike or a voltage spike. I don't believe it's just about voltage, but I very well might be wrong in my thinking.

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?

I know a lot about the hydraulic analogy. How much do you know?

Not that much. Maybe you can school me on it.

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.

Capacitors hold charge, to be precise. I have never seen their action described as "buffering" . . until now.

Capacitors are used in high-powered automotive (and other) stereo systems to allow big amps to supply enough power to huge speaker systems Ted. They are also used on motherboards to reduce the affects of "power surges" (or voltage fluctuations maybe?) from the power supply (or is it related to fluctuating draws of power by the CPU?). That's about the extent of what I know Ted. Maybe you can learn more by reading this:

. . . or this:

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.

Not surprising, really. Electrical Engineers are versed in electrical power generation, distribution and site or building wiring.

Am I mistaken when I think that there are electrical engineers that also do things like designing circuitry for computers and other electronics Ted? A girlfriend of mine was an electrical engineer (that's what he called himself) for Motorola, and I believe he told me that he was working on circuit board design for cell phones at the time I had a conversation with him about what he does at Motorola.

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.

Scot, you are entitled to have your opinions, of course. It's when they get posted as implicit facts that others, less knowledgeable than our good selves, can become misinformed.

I'm not misinforming them, as far as I am aware. My voodoo is good stuff Ted.

You can't prove God doesn't exist, can you Ted?

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


This discussion is ridiculous. I fold.

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