Welwyn W22 resistors

[Terry]

These limits apply to various resistor types - I produced a table once for lower power resistors to illustrate this, but I haven't got it on this PC. If I can locate it, I'll post it here.

Found it on my laptop - I'd omitted to put it in my Dropbox!

So, here it is:



It shows the voltage drop across each resistor value which results in a dissipation equal to the resistor's maximum rating.

However, each series has a maximum specified voltage rating, just like the Welwyn wirewounds, and the maxima shown here are typical values although resistors with higher maximum limits are available - Vishay seems to spring to mind.

Obviously, if I hadn't stopped the calculation when these these limiting figures were reached, the voltages across the resistors would have continued to rise with increasing value.

Jeffrey will no doubt be delighted to see that the figures in the table have been rounded to whole numbers ...