exxos's Atari, Amiga & retro forum

Hey guys,

If I replace a blown resistor with 2x resistors in parallel, would this allow them to be more tolerant to the heat / wattage passing through, ie share the load?


So for instance, if the original resistor that blew was 500ohm, I would put 2x 1kohm resistors in parallel right? But yeah, would this be effective and make it more reliable? (of course I know you can get higher wattage resistors, but if you don't have any etc would this work)

Cheers

Yes, in your example, two 1Kohm resistors in parallel would be equivalent to a 500ohm resistor. I have no idea how tolerant the combination would be in relation to heat or stress compared to a single resistor.

1/RT = 1/R1 + 1/R2 + 1/R3...

Yes, the total amout of power will be divided between the two resistors.

So if the original resistor is 1/4th of a Watt and the two replacements are also 1/4th of a Watt, the replacements will be a lot cooler.

Make sure that the resistors have enough room between them so that they do not heat up each other.

Thanks guys much appreciated :)