Problems with the W6PQL 70 CM 1KW amp.
The amp that I built has developed a problem on one of the LDMOS devices,
this has resulted in one of the device failing .
After inspection I found the case of the device had been chipped , so not sure if something dropped on it to cause it to then fail.
After trying to power it up have the Magic smoke off the device , confirming it was a gonner for sure.
problem with these device when we built it , the device is flow soldered onto the heat spreader, so it will all have to be removed and de soldered without affection the other good device .
After looking around i found another pallet LDMOS from Italab
This is a 1kw Pallet , running off 50v at around 40 amps , si i may well just remove the problem amp in my Cased unit and fit one of these instead.
No comments:
Post a Comment