Massimo,
Just to underscore what others have stated, long ago in one
of the resistor mfr's catalogues, there was a discussion of
this topic. Essentially, do not violate the DC wattage
rating of the resistor based on a 1 second time period.
As an example, a 1W, 1 Ohm, carbon composition
-Original Message-
From: John Barnes [mailto:jrbar...@iglou.com]
Sent: Tuesday, February 19, 2002 4:45 AM
To: emc-p...@majordomo.ieee.org
Subject: Re: Resistors pulse loading capabilities
Massimo,
All the tests that I've seen for evaluating the peak-pulse-power
handling capabilities
Massimo,
All the tests that I've seen for evaluating the peak-pulse-power
handling capabilities of resistors are based on charging a bank of
capacitors to a high voltage, then applying this energy (E = 1/2 * c * V
* V) to the part/equipment-under-test through a low-resistance
low-inductance
I suspect that this will depend very strongly on the characteristics of
specific type of resistor. Further, there will undoubtedly be very
significant differences from manufacturer to manufacturer, in the
ability to absorb stresses well beyond normal design intent. I think it
would be rather hard
Hi Massimo,
Try http://www.vtm.co.uk/.
They had a good calculation method in the printed version of their
catalog which does not seem to be available on the website ( I haven't
looked very hard for it). It worked well for sizing in-rush limiting resistors.
Regards
- Chris
-Original
I read in !emc-pstc that Massimo Polignano
massimo.polign...@esaote.com wrote (in OF78266151.726D3F50-ONC1256B64
.004c7...@esaote.com) about 'Resistors pulse loading capabilities', on
Mon, 18 Feb 2002:
Does anybody out of there know what are the methods to evaluate resistors
pulse loading
6 matches
Mail list logo
