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Old 28th Mar 2021, 7:33 am   #284
Mark1960
Octode
 
Join Date: Mar 2020
Location: Kitchener, Ontario, Canada
Posts: 1,265
Default Re: I found it! A very sorry looking MK14.

Quote:
Originally Posted by SiriusHardware View Post
Mark's issue VI has N82S131Ns in it, I would be interested to know if they appear to him to run any cooler than the DM74S571s in his original issue IV. They still run quite warm, but to my mind not as hot as the DMs.
I’ll see if I can find a second power supply so I can set them both up beside each other.

I’ve also added a non contact thermometer to my shopping list in case I feel the need to take more objective measurements.

Looking at the datasheets, the DM74S571 max supply current is quoted as 130mA and typical 90mA at 5.5v, while the 82S131 quotes only the maximum of 140mA at 5.25v. This would suggest the 82S131 would run hotter.
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