| Electronics > Beginners |
| Determine old resistor from old vehicle |
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| jabalv:
Hi. I have a schema for tractor where there is glower input inlet. There is 12V+12V 24V and R1 to transfer 12V for that glower. But that R1 is in terrible condition and I am trying to understand where can I get such thing and how big value it is. See attached images. Can you please help? |
| ArthurDent:
From the photo it doesn't look like the resistor's zig-zaggy element is broken so you may still be able to read the resistance of the resistor with a multimeter. Ohmite vitreous power resistors may have a close replacement. Other than that a repair shop or the tractor maker would be the place to go. |
| cvanc:
--- Quote from: ArthurDent on February 07, 2019, 02:47:55 pm ---From the photo it doesn't look like the resistor's zig-zaggy element is broken so you may still be able to read the resistance of the resistor with a multimeter. Ohmite vitreous power resistors may have a close replacement. Other than that a repair shop or the tractor maker would be the place to go. --- End quote --- Yup, exactly. It looks like you might still be able to measure the value of your part, so head in that direction and let us know what you find. And post a picture of the tractor! Old tractors are cool. Good luck with your restoration. |
| soldar:
If the glow plug is 12 volt and the resistor is to drop 12 V from 24 to 12, then the resistor is of the same resistance as the glow plug. |
| mikerj:
--- Quote from: soldar on February 07, 2019, 03:54:18 pm ---If the glow plug is 12 volt and the resistor is to drop 12 V from 24 to 12, then the resistor is of the same resistance as the glow plug. --- End quote --- Noting that the resistance of the glow plug will likely increase when running at it's intended temperature compared to cold. |
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