[time-nuts] SMPS or conventional?

[Bob kb8tq]

Hi

The devices all *worked* just fine, even without any heatsink 
at all. There was no performance impact to the (lack of) heatsink
in a normal lab environment. 

Small in this case is mounting the device to a heatsink that is the
size of the “hot” side and maybe a half inch of fins. Fins always get
oriented to be vertical. 

Again, the only issue is reliability.

Bob

> On Oct 20, 2020, at 11:08 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> 
>> 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.
> 
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.