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Starfella Starfella is offline
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Default Electric blanket controller

On 11/22/19 2:50 PM, Cursitor Doom wrote:
Gentlemen,

I refer to you this photo of the internals of a typical modern cheap and
nasty blanket controller. All the components it uses are shown on this
board: just 5 diodes, 3 resistors and some 'mystery component' whose
function is presumably to sense overheating from the two resistors it's
between and cut-back the mains voltage to the blanket itself if needed.

https://tinyurl.com/t7s6og8


Question is, what is the correct name for this 'mystery component' and
what should it read resistance-wise when cold?

Thanks!




Not sure about the name of the component, but I will say that today's
electric blankets are awfully poor made. Years ago, when I had one
while growing up, it lasted for at least 10 years before someone threw
it away during cleaning. As an adult, I purchased a Sunbeam brand about
five years ago and I've never had one last more than 6-8 weeks! The
only type of heating blanket I've found in recent times that does last
are electric throws. I have two, purchased about 5 years ago, and with
heavy use, they still work fine. Problem is that they are a bit too
small for bed use although I make them work that way.