[hpsdr] Hot ADC

[Kjell Karlsen]

I do not have a thermometer to measure the temp of the ADC but it felt  
very hot, much more than I liked. I glued a small Heatsink on top of the  
chip and it helped a bit. When I had a look at the  aeria on the bottom of  
the board directly under the chip, I discowered that the solder may not  
have melted properly when the board was produced. There was no sign of  
solder up in the holes below the ADC. I resoldered the aeria and now the  
bottom of the card is warmer than before. Unfortunately I can not confirm  
this by measurements, but my feeling is that the chip is colder now.

Can someone do a tempereture measure before and after resoldering and  
report back?

Kjell




På Tue, 13 Jan 2009 19:33:34 +0100, skrev Charles Brain  
<chbrain at btinternet.com>:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Is there a proposed timescale for this project?
>
> The reason I ask is that if the timescales are long it might be better  
> for me to look at building a conventional class AB amplifier or  
> obtaining a surplus unit.
>
> If anyone in the U.K is interested my Mercury arrived on the 9th of Jan  
> and appears to have been posted on the 29th of Dec.
>
> Boy does that ADC get hot, my IR thermometer measured 70C.
>
> - Charles G4GUO
>
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