How adequate is the standard heat sink for the amp built with 45 tubes? I originally was just going to add another of the same heat sink to the back of the one soldered to the board, then I got a small TO-220 size sink to add and finally I have a .250 inch thick piece of aluminum plate and a 2" X 4" heat sink that I could drill and tap for 4-40. A board member here sent me the large heat sinc but memory does not serve me well.
I started and new job a year ago and have not done much else but put attention there.
I know cooler is better but is it necessary?
I started and new job a year ago and have not done much else but put attention there.
I know cooler is better but is it necessary?
I put my original TSE in a (too) small enclosed Lexan box with the stock heat sinks. There were no issues with 45 tubes.
The problems started when I decided to run 300B's in that same amp with the small heat sinks and power transformer. The filament regulator would shut down after about half an hour. I added a heat sink off of an old 486 computer and everything was OK.....and still is 6 years later. I did swap out the power transformer with an identical unit after the first one got wet during a hurricane.
Unless there is no airflow at all the stock heat sink is OK.
The problems started when I decided to run 300B's in that same amp with the small heat sinks and power transformer. The filament regulator would shut down after about half an hour. I added a heat sink off of an old 486 computer and everything was OK.....and still is 6 years later. I did swap out the power transformer with an identical unit after the first one got wet during a hurricane.
Unless there is no airflow at all the stock heat sink is OK.
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