[time-nuts] Rb cooling

[Charles P. Steinmetz]

Bert wrote:

>Charles sounds like what I am doing. What size fan do you use?

It's 40 mm square, and quite thin (< 10 mm), from a dead hard 
drive.  At normal indoor temperatures (20-25C), it spins from 100-200 rpm.

I chose 45C for the baseplate temperature so it can be used at any 
ambient temperature I'm likely to encounter.  40C was, I thought, 
just a touch too low for that.

Best regards,

Charles