Resistor search. NON VW

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maxstu
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Resistor search. NON VW

Post by maxstu »

Looking for a replacement four band resistor. Brown/black/yellow/gold is 100K ohms. But how do l determine wattage? I've seen this four band resistor in 1/4 watts up to 4 watts and not sure which one to purchase.
This is for the thermostat on/off switch illuminating the tell-tale bulb in an old 240v dimplex electric heater.

Regards,
Stuart

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Re: Resistor search. NON VW

Post by Aidan »

looks like 1/4 watt doing a picture search

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Re: Resistor search. NON VW

Post by ZsZ »

By size and data chart.

https://www.wjoe.com/resistor_resources.htm

There are quite a few size standards but these are about common sizes

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Re: Resistor search. NON VW

Post by maxstu »

Great stuff and many thanks to both.
The top one at 0.25W but on 100k ohms will match.
As the current resistor in my Dimplex heater has no continuity l assume it is dead? And the illumination bulb is toast as well, then?
This failure coincides with a recent local power cut. So l reckon change the resistor like for like and get a new bulb and we have illuminations again.
Now to find a replacement bulb 15.5mm by 6mm. Or will this bulb l have work, instead?

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Re: Resistor search. NON VW

Post by tobydog »

576-513 is rated at 14 volts. If you connect it to 230v it's going to have a very short lifetime... bout 0.02 seconds

What happened to the legs on the neon lamp sitting on the package?

Have a look at:
https://uk.farnell.com/multicomp/mc0801 ... &source=CJ

&

https://www.farnell.com/datasheets/3577159.pdf

How did you check the resistor?
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