I plan to house a 20 watt amp for 1.2 GHz into a project box, incorporating a transmitting and a receiving board, and also a monitor.This unit would mostly be used /m and /p.
The photo's shown below are some of the various heatsink's I am testing to see which one is the most efficient to use with the amp to keep it cool, as it would not last more than a few moments without one. I would be also adding some 12v fans to aide the cooling process. The smaller block of aluminium was of no use for this project, as after less than 3 minutes, the temp rose to over 43deg.
The larger heat sink turned out to be the one to use, as it was not a solid block like the other one, it had many fins on it, and was able to dissipate the heat quickly due to it's surface area. Speaking of heatsinks, I did not realise that subject was an art of its own. I will add more info and photo's when I do a bit more construction.
The larger heat sink turned out to be the one to use, as it was not a solid block like the other one, it had many fins on it, and was able to dissipate the heat quickly due to it's surface area. Speaking of heatsinks, I did not realise that subject was an art of its own. I will add more info and photo's when I do a bit more construction.
 |
| Testing first heatsink. |
 |
Temp after 3 minutes on first heatsink. |
 |
| Testing second heatsink |
 |
| Power output 20 watts. |
 |
| Temp after 30 minutes on second heatsink. |
 |
 |
| Current used by amp,and driver. |
 |
| Large heat sink temp after 30 mins (48 deg ) 15 deg higher than temp of amp. |
No comments:
Post a Comment