[time-nuts] SMPS or conventional?

[Hal Murray]

> I spent a lot of years buying Rb’s and putting them on small heatsinks.  I
> always was disappointed in their reliability. That continued to be the case
> up to the point that the baseplate temp’s got into the 40C region.  In my
> case, that took a fan …. 

How well did it work if the heat sink wasn't small?  What is your version of 
small?

Do you have any data (or vague memories) of how much it helps to orient the 
heat sink so the fins are vertical so they encourage warm air to flow up past 
the fins?

-- 
These are my opinions.  I hate spam.