Quote:
Originally Posted by CarWiz
That may not be such a great plan. The PID can pulse the heaters quite often. (Sometimes at a rate in seconds.) Not only is this hard on your power supply but also won't purge heat built up in the heat sink if your fan never gets to full speed. Having the fan come on when main power is applied won't substantially increase your cost to operate. And your power supply will like you more for it too.
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Yeah it pulses them fairly often. The AC adapter is rated such that it could power 5 of those fans without a problem. So I don't think the pulsing will hurt it much. The fan keeps spinning for a while with no power applied, so it keeps spinning between pulses.
I think the CPU heatsink without any fan would be more than enough for proper cooling. I just decided to use the fan because it was easy, and I was a little paranoid after my 1st SSR blew up.
The oven has approx 50hrs on it, so far the fan hasn't shown any signs of giving up. If it does fail, I'll make sure to post here.