On Tue, 01 Nov 2005 12:12:30 -0800, John Larkin
wrote:

On 1 Nov 2005 10:29:32 -0800, "Woody Brison"
wrote:

I vaguely remember an engineer mentioning an old rule of thumb
for quickly estimating temperatures on circuit boards: you put
your finger on a component, and it went something like this:

Feels cool ... 25 to 35 deg C
Neutral ... 37
Warm ... 40 to ?
Very warm ... ?
Hot ... ?
Makes a blister... ?

Does anybody have the numbers that go in here?

Wood

I can touch a smooth metal surface at 50C forever, 60C for about 2
seconds, and can interpolate pretty well berween.

Calibrate yourself!

John


Mmm...

I have measured the "surface" temp of a 60W typical bulb and came out
appox 80C with temp probe attachment for multimeter.

Cheers, Wizard