wrote in message
...
On Sun, 11 Jan 2004 23:54:29 +0100, "Meindert Sprang"
wrote:
I agree with your points. I guess it's up to the alarm device builder to
choose
the method.
But, also as an electronic designer, I generally don't like to approach
max values.
I use a conservative 25% of ratings as a design goal, based on reliability
charts.

Don't you think the device builder took the same precaution and used some
transistor or fet capable of 0.5 ot even 1 A?

Moot point, but don't most silicon transistors have a Vsat of about .2
Volts?
I wouldn't be surprised if the device in question was actually a FET.
Norm

Quite possible.

Meindert