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#1 |
Join Date: Dec 2012
Posts: 24
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Rectifier resistor
I am replacing my X-PRO 5-Wire Voltage Regulator Rectifier.
The rectifier on the bike has this resistor on the green and red wires as pictured. Do I need to add this resistor to my replacement unit? Does anyone know why it was added to begin with? None of the same exact rectifier replacements from any of the dealers have this addition. Thanks |
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#2 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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I would reckon that is a diode. Never seen a diode on the hot and ground charge wires like that before, but there may be a circuit downstream that requires it.
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__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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#3 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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Looks like a capacitor to me.
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2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene" |
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#4 |
Join Date: Sep 2014
Posts: 1,911
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It's a capacitor. Does your bike have a battery? If not you will probably need the cap.
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#5 |
Join Date: Dec 2012
Posts: 24
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Thank you for the replies, yes my hawk has a battery. LOL
I only know enough electronic stuff to be dangerous |
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#6 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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You just described me lol.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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#7 |
Join Date: Aug 2019
Location: Central Ohio
Posts: 297
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That is most definitely a capacitor.
Capacitors are meant to temporarily store and then discharge electrons, either for a starting or "large electrical load" circuit, or for "electrical smoothing" purposes for sensitive electronics. If it matters or not depends on where the harness it is attached to plugs in. What circuit is it on, or where does that plug go? |
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#8 |
Join Date: Sep 2014
Posts: 1,911
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The 3 yellow wires are AC from the stator. Red and green go to the battery. The battery itself will act as a capacitor but usually one is added to make the regulator work without a battery.
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#9 |
Join Date: Jun 2020
Location: A small country with a funny name
Posts: 164
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I imagined one would need a bigger capacitor to replace a battery's buffering/filtering function. Even a small radio drawing 10W tops would have a larger one in its power input stage (then again, a motorcycle's AC electrical system operates at a higher frequency than mains, so a smaller cap could also work OK).
However, in the place it is, it's probably smoothing out the power supply for a more sensitive piece of electronic equipment. |
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#10 |
Join Date: Nov 2017
Location: Marseille, France -> Conakry, Guinea
Posts: 1,481
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You're partially correct, it would need a bigger capacitor, but the AC side of things is around 40V, so far below mains. I would remove the capacitor if it was me, there's no logical reason for it to be in the circuit. I don't think it's hurting anything, but I can't see any real reason for it.
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