On Wed, 12 Apr 2006 03:40:34 GMT, Ross Herbert
wrote:

On Tue, 11 Apr 2006 23:43:28 +0200, Wiebe Cazemier
wrote:

On Tuesday 11 April 2006 23:13, I.F. wrote:
The NTC thermistors I've salvaged from a whole range of scrap PC monitors
have ranged from a few hundred Ohms to as high as 12k at room temperature,
the running resistance is usually 5 Ohms or less.

These were also inrush limiters? Monitors also use these things in their
degausing system, if I'm not mistaken. I can imagine their values needing to
be a lot higher, to allow the alternating current to diminish to zero. Yet,
you'd think they'd use PTC resitors for that (to let the current start high,
end low when the resistor is hot), so perhaps I'm wrong here

But that is quite a difference. Mine don't differ at all when in use or not.

The 9-10 Ohms explains why there is "5.0" written on both of the NTC's BTW .
I wonder if they mean that's their room temperature resistance, or running-hot
resistance.


The component you are referring to is sometimes called an Inrush
Current Suppressor. It is actually a low-ohmic NTC resistor,

RS Components in Australia have them as shown here
http://www.rs-components.com.au/elec.../index621.html

It is highly likely that RS in UK/Europe will also have them.


Sorry, that url was not correct. This one appears to work (very long
url watch wrap)
http://www.rsaustralia.com/cgi-bin/b...toid=-82218076