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Old 21-09-2007, 02:28 PM
Entropy
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Problems with Peltier

Hey guys,
Me again, with yet another problem

When I use the peltier/fan combo on my camera, dew forms on the chip very quickly. Both fan and peltier seem to be working correctly otherwise.

Do you think the problem could simply be that the fan is on backwards/upsidedown ?

If not, any ideas on how to remedy this problem (short of, not using the peltier)

Thanks
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  #2  
Old 21-09-2007, 02:51 PM
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mill (Martin)
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What voltage are you using?
If it is 12Volt try an lower voltage but leave the fan running at 12Volt.
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Old 22-09-2007, 03:48 AM
Pierre
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Quote:
Originally Posted by Entropy View Post
Hey guys,
Me again, with yet another problem

When I use the peltier/fan combo on my camera, dew forms on the chip very quickly. Both fan and peltier seem to be working correctly otherwise.

Do you think the problem could simply be that the fan is on backwards/upsidedown ?

If not, any ideas on how to remedy this problem (short of, not using the peltier)

Thanks
Hi,

the chip is very cold and the volume is moisture overloaded. maybe you should carefully open the ccd and insert a regenerated tiny bag calcium chlorure to absorb moisture. Many high-end ccd cameras includes this. Is it possible with yor kind of camera?

Sometimes you have tu put it into a hot oven (100c) to regenerate the calcium chlorure chrystals.

See the example as shown on the picture (Audine Kaf400 ccd sensor, you can see the tiny bag).

Pierre.
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Old 22-09-2007, 11:28 AM
Entropy
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Quote:
Originally Posted by mill View Post
What voltage are you using?
If it is 12Volt try an lower voltage but leave the fan running at 12Volt.
Unfortunatly it seems that the fan and the Peltier are on the same circuit.
I might have to look at isolating the peltier if the moisture bag idea doesnt work. (Which is an absoutly brilliant idea... I think ive got a tonne of them in an old guitar case.
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