"Dave Plowman (News)" wrote in message
...
In article ,
Colin Trunt wrote:

"larry moe 'n curly" wrote in message
...
When run at its rated power?

I'm referring to 1/4 - 10 watt resistors in TVs and PC power supplies,
probably in 30-50 Celcius surrounding air.

I thought that resistors were supposed to be chosen for twice the
actual power, but I've seen many 0.5W to 1.0W resistors run at almost
exactly their rated power continuously.

Serious question?

It depends on what it is made of.
Also resistors are measured in ohms not watts.

You must be lucky if you choose them without taking into account the
current they're handling.

Not usually an issue.
Anyway I can allways stick in a resistor to drop the current
down to one it can handle. ;O)

Anyway if it lasts a day it should last a lifetime.

The usual solution is to add a heat sink.


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Dave Plowman London SW
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