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Old Today, 12:34 PM   #21
PeteS in CA
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Default Re: Dell model L275E-01 pn: Wu142. Optiplex 755 small form factor.

Quote:
Originally Posted by stj View Post
it's getting pretty common in europe now to bypass hot thermisters with a fet/triac or relay just to save "something" or reduce heat output.
we are under the thumb of the scum that are obsessed with carbon!!
...
While I won't disagree with your assessment of the enviros, improving efficiency of PSUs in a big server-storage farm can improve the farm's electric bill, so to speak.

Shorting out the inrush thermistor also allows use of a higher value thermistor that cannot sustain the normal continuous current: the inrush is lower in magnitude; the thermistor gets shorted out before it desolders itself or blows up. I saw the latter usage back in 1980 in which a simple wirewound panel mount resistor was used; the resistor did not survive long if the triac failed to fire, .
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