[Roger Philip Blackwell]

Having replaced the 12710 module with one from a different supplier, my chamber is performing well.
At 8.5 V with a 1 ohm resistor it reaches -25C in about 5 minutes, drawing around 7A.
My conclusion is that there are some mis-labelled modules out there.

[Roger Philip Blackwell]

Is anyone building the cloud chamber described in the August Journal? I am having problems with the 12710 Peltier coolers sourced from the link in the cloud chamber paper? My two examples do not draw the 4 amps suggested, but only about the same as a 12706 cooler, around 2.5 amps.

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