Questions tagged [voltage-regulator]

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How to minimize voltage loss

I have a '79 bike that is currently experiencing voltage loss, causing the battery to die after a couple hours of riding. It is clear there is lots of corrosion and rust on many of the wires and ...
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2answers
54 views

Can i modify my motorcycle voltage regulator cooling fins?

On my motorcycle, I have a voltage regulator similar to this one: Some times over long trips and especially in summer, it tends to get really hot even though it is located under the subframe, exposed ...
2
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1answer
43 views

Charging problem

Ducati 450 scrambler 1975 converted to 12v with Luas Rita AB11 electronic ignition it is so easy to start with this modification I put a new original alternator 3 face that gives up to 55v at 5000rpm ...
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1answer
31 views

1990 F-150 Eating Alternators

My old truck has a problem with zapping alternators. It's a 1990 F-150 with a 5L V8. Specifically, I believe the voltage regulator is going out. Giving it a lot of gas seems to always be the event ...
1
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1answer
138 views

How likely it is that low alternator voltage cause Xenon HID headlamps ballast to fail?

It seems that the alternator is producing a bit low voltage, about 13.4V max, while this should be over 14V AFAIK, undercharing the battery. The left Xenon HID headlamp ballast failed some time ago, ...
2
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1answer
151 views

How can I confirm a faulty alternator or regulator with only a basic digital multimeter at hand?

Make: Maruti Suzuki Model: 800 hatchback Engine: F8B MPFI Battery: Exide 35AH 2.5 year old Rated OCV 12.92 Location: Nagpur, India. Daytime Temp about 44C Background: Around November/December ...
2
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1answer
124 views

How much accurate car cigarette lighter port is?

My car's generator is putting out 13.5 voltages when on full load (blower, ac, lights etc) but when i check the voltage on car's cigarette lighter port it it drops to even 11.6 when blower is on, when ...
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1answer
332 views

What is BM voltage?

I'm reading in my car's repair manual that I need to check "power supply voltage (+BM)". It also uses the phrase: "power supply circuit (+BM)". What is BM voltage?
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2answers
2k views

Battery Voltage low when car is running. Should I be concerned?

Car: 2010 Mazda 3 GT 2.5L Manual 160,000KMs I purchased the car 3 months ago not knowing the history of the battery, I wanted to test it. I measured the voltage across my battery using a voltmeter ...
7
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3answers
38k views

Should an alternator ever run over 14.5V?

Bought a replacement alternator but I am sending it back as I measured and have seen it running over 16.5V. The manual says the regulator should keep it to a max of about 14.5V. I put a brand new and ...
0
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2answers
53 views

replacing a voltage regulator on a snow machine with a tansistor of some sort?

I have a 2002 Grand Touring 600 se. For some odd reason there are no aftermarket manufactures who producing voltage regulators for my year and model of snowmachine. There are other models that have ...