Photo by Robert D. Copeland The 3-inch washer used to attach the fan and clutch assembly to the alternator. Doesn't the turbine have a shaft that spins? A Smart Aleck’s Guide to Buying a Spitfire, http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=45271. (Field, Current Generating) 1 decade ago. You can let an inverter sit for 5 years and it will still work when you turn it on. MKI & MKII) were positive ground; MKIII and onwards were built negative ground. The windings on the armature (the part that rotates) are the current generating windings. Also, running all that current through the bars at the end of the armature and through the brushes is tough on the brushes. TWO THINGS. A Toyota car alternator taken from a junkyard is characterized via an Open-Circuit test to evaluate its operating specifications. At the end of the armature we have a series of conductive bars. January 7, 2014 @ 5:13 pm Who knew? The electricity used in a car is DC, yet we call this device an alternator. This provides a reliable and low-cost alternative to high-power brushless motors for many applications which is easily acquired and second-sourced. An alternator converted to a Hybrid Brushless Motor provides a low-cost alternative to brushless motors (BLDC) because alternators are mass-produced way beyond the quantities of brushless motors, and they have dynamic behavior similar to brushless motors in a wide range of applications. An automobile alternator needs to run at a speed of at least about 1000 RPM to function at its rated output. Classic Car Automotive Electrical Systems - Part 2: How Generators and Alternators Work GENERATORS AND ALTERNATORS. How Alternators Work to Make Electricity . A car is easier to move than a 150 lb generator. They both make the same kind of electricity. bill. Our Alternator Conversion Manual, "How to Convert an Automotive Alternator to a Hybrid Brushless Motor" shows in clear step-by-step instructions with photographs how to do the conversion. No matter how good your battery-powered saw or drill is, sometimes you need a plug-in tool to get the job done. The alternator is comprised of a voltage regulator and three main components: The stator, rotor, and diode. A relatively modern alternator only needs two wires to do its job. The biggest differences are… http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=45271, July 23, 2015 @ 12:09 pm Tacking the ends together at a central focal point will keep this force constant, and push the propellers in a circular motion. As you might remember, our first generator was built using a horizontal shaft engine. A welder needs high currents at low voltage, a power system high voltages and low currents. In older cars (before about 1964) this was done with a generator. A car is easier to move than a 150 lb generator. Relevance. To answer the first part of the question you need to understand how a generator, and an alternator each make electricity. Self Excite an Alternator Without Any DC Generator, Capacitor Bank or Battery: Hi!This instructable is for converting a field excited alternator into a self-excited one.The advantage of this trick is that you won't have to power the field of this alternator with a 12 volt battery but instead it … 7 Answers. The field wire has been removed / taped off and is no longer used. If you spin it fast enough, long enough, you can put the output through rectifying and regulating circuitry and use the output to charge up a battery. Before I compare an alternator vs generator, let’s get these naming conventions cleared up. Now we can go on to how that battery gets charged. Should ( as stated in video) be negative (-) earth, August 21, 2016 @ 12:41 pm What can you use this Hybrid Brushless Motor for? The battery has pairs of lead plates immersed in a mixture of sulphuric acid and distilled water. carlbergs, Rod, Because of the difference in the way the electricity is produced, it makes better sense to use a more efficient, and more reliable, alternator and then convert the electricity back to DC. Here is a quick project that will give you the ability to use an old, working alternator as an alternative source for energy. Removing a generator and installing a alternator. David Pethig, found video really good and instructive know how to convert to an alternator now thanks just one thing you said the vehicle had to be neg earth but on the diagram it shows the battery as pos earth is this right or MUST the battery be neg earthed thanks again will try it out on my Ford 100E, December 31, 2013 @ 5:32 pm If wires are reused, use the GEN to A wire to connect to alternator (usually a heavier gauge wire). The challenge for many of us is how to wire the upgrade. 4 1. Even old car generators must spin too fast to be practical for wind power, but there have been many good plans for modifying them. Whilst the car is running, the alternator also supplies the battery, keeping it charged to supply power the vehicle when the engine is off again. I noticed that the battery in the diagram was positive ground too. This should be changed to negative ground on the battery and wire from the starter solenoid should go to the battery positive terminal. stephen heaney. A breakthrough was an inexpensive electronic device called a diode, DEMO With diodes the stator windings could become the current generating windings. A smaller pulley could be put on the alternator. A car's battery only provides enough power to operate the vehicle's starter when starting. When the battery initially powers the car, the alternator belt, or V-belt, spins the pulley on the alternator, causing the rotor inside the alternator to spin very quickly. If you obtain two alternators, you may use one as a generator and the other as a motor. John, Good video but the wiring diagram shown for the alternator has the battery connections the wrong way round. The generator used a spinning armature to generate DC electrical power and in practice was both rugged and reliable. Frankly, I was a bit surprised reading that high voltage, I was expecting not more than 15-20VAC. Alternator conversion and alternator change. car alternator to operate as a low speed generator for wind or hydro power generation. You need to turn it at least fast enough for it to generate enough voltage to overcome the forward voltage drop of the diodes. Alternator conversion and alternator change. However, once a load is applied (i.e. Through the use of a transformer, this electrical energy can then be converted from one voltage to another. Any questions i can try to answer.If your interested in the same set up I am affiliated with Amazon. We offer a kit to convert your MGA to an alternator. The steps needed to prepare an alternator as a three-phase generator and as a three-phase motor are the same. Generators make DC current, and batteries need DC for charging. What is also standard with having a quiet enclosure for a generator is that you can also use it to make an air compressor quieter as well since we all know how loud an average air compressor can be; so make sure to make the sound box big enough to be able to accommodate other loud appliances. Converting a car alternator into wind generator: Assembled. TWO THINGS. Excellent Tech Video! The alternator also has a pin at the bottem that says "Bat" so im guessing that goes to the negative terminal of the battery. Answer Save. An alternator can be easily acquired; making construction of a small wind turbine generator a perfect choice. A Car Alternator Can Be Made Into A Powerful Hybrid Brushless Motor In A Couple Hours With Common Tools. Installing an alternator in place of a generator, or upgrading an older style alternator to a more modern alternator, is usually not hard to do. Slide the lawnmower to the side so the belt is tight. A Delco car alternator is about the size of a cantaloupe fruit and so there is a limit of how much copper and magnets that can fit inside of it. An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. In a vehicle, an alternator is used to charge the battery. Generate power for corded tools anywhere you go without the cost and hassle of a gas-powered generator by wiring a power inverter to your truck battery. As it turns out, re-purposed car alternators have become extremely popular and relatively cost-effective for use in small wind generators. ie positive (+) earth. For all generators and externally regulated alternators, the regulator is a small device mounted somewhere on the firewall or the inner fender of the car. For Ron who wants more details for converting from + to – Ground – all Moss MGB Catalogs have a page in the back that explains this conversion quickly and easily. One doesn’t make “better” electricity than the other. That means the alternator is a nice neat all-in-one package, but it leaves us with a number of wires and the old regulator that need to be dealt with. Also, while most alternators have always had an internal voltage regulator, the older models often had more wires than a more modern alternator. Alternator converted to a motor driving a high-speed turbine water pump. Some of us have moved from an old style alternator to a more modern and more efficient alternator. HOW TO CONVERT FROM GENERATOR TO ALTERNATOR. Before you test the alternator, you’ll need to make sure your car’s battery is fully charged. Use sandpaper to smooth the holes. Alternator Conversion Manual for Download...... Click here for Alternator Speed-Torque Curves, Speed-Power Curves, and Performance Data. Trying to generate 5kW from the engine's belt driven alternator is not the right way to approach this. Place this assembly in … Drill a 1/4-inch hole at about 7 1/2 inches from the front end of the steel tube through both sides of the tube. This creates electricity in the current generating windings mounted on the armature. It also explains how to drive the alternator as a motor. We did a little searching around the information superhighway to ferret out the truth behind wind-powered generators made with Delco alternators. Run the wiring of the tachometer from the vehicle's interior to the engine compartment. Mount the tachometer above the steering column or on the dashboard of your vehicle using the supplied hardware and tools recommended by the manufacturer. That protects the generator from high RPM damage, but it leaves the generator almost valueless at low RPM’s. I will try to explain those differences without making your head hurt...to much. With the advent of more electrical accessories like power windows, the generator could not meet the additional demands and was replaced by the more powerful alternator. DEMO This calls for additional regular maintenance. Thus the 12-14V DC output produced by your alternator can … This is just for entertainment and educational purposes only. A car alternator that can be readily converted to a powerful motor costs about $100.00, but a conventional brushless motor that produces about the same power output typically costs far more -- well over $500.00 and is often more difficult to obtain with long order lead times. I use mine all the time and I like it better than any generator I've owned. RE: alternator as a generator in a car evelrod (Automotive) 20 Jan 03 14:36 birt, Since you seem to be having a great deal more difficulty than you should be, … It could spin faster which made it capable of generating current even at low RPM’s. Also, the relatively small amount of power needed so the field windings can become an electro-magnet, can be sent to the armature via a pair of small brushes that would ride on slip rings on the armature instead of bars. Only a small field current passes through brushes and smooth slip rings to the rotor. This is called a Hybrid Brushless Motor since it has a combination of brushless power drive current and a small brushed field current. Now we can go on to how that battery gets charged. Let’s talk about wiring. The design of the generator may need different pulleys on the engine to apply proper shaft speed to the generator head and the alternator, or this may be workable with 1 engine pulley and 1 belt. Some of us have moved from an old style alternator to a more modern and more efficient alternator. Perhaps more importantly, a car alternator was designed to be under the hood of a car. The interesting part of this set-up is the use of a car alternator. All power drive current to this motor is brushless: drive current passes only through the stator and does not go through any brushes. You say it is a commercial vehicle so it should have one, or at least an option to fit one. The acquired values are used with the generated A car alternator changed over to a motor can put out in excess of 1.0 HP -- in many applications far above that, depending on the alternator, how it's converted, and how it's controlled. Anonymous. DO NOT TRY THIS AT HOME. A Delco car alternator is about the size of a cantaloupe fruit and so there is a limit of how much copper and magnets that can fit inside of it. Alternators usually use internal regulators. To keep the RPM’s of the generator under control, generators were usually set up with a large pulley to lower their RPM’s. Classic Car Automotive Electrical Systems - Part 2: How Generators and Alternators Work GENERATORS AND ALTERNATORS. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. Another advantage to this system is that it can easily be … In older cars (before about 1964) this was done with a generator. Rod T. Great video, I learned a lot and want to switch my 62 MGA to an alternator. This is a highly reliable design with minimal abrasion (unlike commutators in conventional dc motors), which is typically used for resolvers and synchros on aircraft, and high-reliability industrial applications. -- anywhere a powerful, low-cost, high-reliability motor can be used: industrial, electric vehicles, alternative energy applications (converting gasoline, diesel, pneumatic, and hydraulic machinery and equipment to electric) robotics, model aircraft, scientific, automotive, aircraft, marine, and scores of related applications. the alternator is turned “ON” to generate electricity), the wind turbine isn’t strong enough to turn. How can I use a car alternator to effciently generate electricity? (battery cables from donor car can be used) An alternator converts the mechanical energy provided by a vehicle's engine into electrical energy. Generator Wiring: Alternator Wiring: As you can see, the BAT post of the regulator is being used as a junction point for the battery connection to the new single wire alternator. Using an automotive alternator to construct a wind-powered electrical generator can reduce or eliminate dependency on "grid" power, even if the wind turbine is only used for lighting or recharging batteries. A Toyota car alternator taken from a junkyard is characterized via an Open-Circuit test to evaluate its operating specifications. Fortunately, you can easily test your car’s alternator to see if it's working using a voltmeter, which is an instrument that measures voltage. Before you test the alternator, you’ll need to make sure your car’s battery is fully charged. Slotting the mounting holes of the engine will provide good adjustment to achieve this. SIMPLE. 736. The smaller lighter field windings could be put on the armature. As you learned in school, when you pass a magnet past a coil of wire, (or you pass a coil of wire past a magnet) you create electricity in the coil of wire. Alternative Power Sources Alternative Energy Off The Grid Wind Power Solar Power Energy Projects Power Energy Energy Technology Renewable Energy. Watch the video. I have a car alternator that has 3 wires. If you are considering using this alternator to generate energy, try attaching it to a pole and mounting a blade type fan or propeller to the shaft. What’s the difference between a generator and an alternator? That’s how the electricity is directed out of the generator and to the rest of the car. Automobile alternators perform more duties than simply recharging a car's battery. It not only generates electricity but also provides you with a great cardio workout, which could be an alternative to going for a run and a good addition to anyone’s life. Locate the ignition coil. It always has fresh gas and starts easily. Deal Buster. The field windings (stationary) in the generator serve as an electro-magnet. In addition, a car alternator functioning as a motor has more versatile control than a conventional brushless motor, and it can have more power and torque at high speeds than a conventional brushless motor of similar size due to its adjustable field. I understand the difference (now:) between the car alternator and the alternator within the inverter generator. Try that with a gasoline or diesel generator. Cross References. Some of us have given up our old generator and moved ahead to an alternator. Traditionally we have a pair of brushes that make contact with the bars. Some of us have given up our old generator and moved ahead to an alternator. Building a wind generator -- outside of the electrical wiring, for which you should consult an experienced electrician -- is a fairly simple process. Step 5 Drill holes for mounting the lawnmower motor to the plywood with a 1/4-inch bit. The windings on the armature spin past the magnetism of the field windings. It has internal diodes to convert AC to DC. 3 Generators use external regulators. I wouldn't had to initiate all this, simply would hook rectifier and use commercial 12/220 inverter. Until the 1960s, automobiles used DC dynamo generators with commutators.With the availability of affordable silicon diode rectifiers, alternators were used instead. These batteries could then be used to power an inverter, which would produce the AC voltage needed to run the house. To know what to do with the two wires. When the battery initially powers the car, the alternator belt, or V-belt, spins the pulley on the alternator, causing the rotor inside the alternator to spin very quickly. Just make sure you leave enough gas to actually drive the car if you need it. They also have another shortcoming. The alternator is comprised of a voltage regulator and three main components: The stator, rotor, and diode. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. There are other small spade terminals 180 degrees opposite the three main connections , one is marked is marked with a number 57 the other appears to be at one end of the diode bank. In any case it is advisable to check since your car … I really learned a lot about converting from my Lucas Generator with brushes and the RB340 Control Box to a modern Alternator and I found it’s an easy upgrade to do! Favourite answer. However, consider their usual use case: attached to a car engine that’s probably mostly running around 1000-4000 RPM via a belt that gives about 4x speed multiplier on the alternator. LarryT. An alternator can be easily acquired; making construction of a small wind turbine generator a perfect choice. So, we are left with dealing with wires again. It includes common-sense explanations of how the converted alternator functions as a motor with clear, easy-to-read diagrams. Now, build a generator with a lawn mower engine! Alternators usually use internal regulators. In a classic generator, the stator windings (statue, stationary – fixed in place) affixed to the inside of the case serve as the field windings. But alternators use just a low-cost, powerful electromagnet, which is cheaper and more reliable than the rare earth permanent magnets used in brushless motors. One method of doing this is to use the alternators to recharge storage batteries. Minis built up to 1969 (i.e. The car alternator is also measured to determine its physical dimensions. The colors of the wires are white, black, and yellow. In fact, generators are seldom used anymore. Who knew? Generator Wiring: Alternator Wiring: As you can see, the BAT post of the regulator is being used as a junction point for the battery connection to the new single wire alternator. Making your own bicycle generator is a good addition for those who are interested in going off the grid and finding a way to live on their own terms. If the power came from an ordinary battery, it would soon run down.So a car has a rechargeable battery and a charging system to keep it topped up. It needs a small wire that goes to the light on the dash, and it needs a heavier wire that carries the current out of the alternator and to the rest of the car. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. See streaming videos below of converted car alternators driving a high-capacity water pump and a 2.8 Horsepower (HP) Dynamometer Load. This generator was built using a 3 horse power Briggs and Stratton horizontal shaft motor, a GM 65 amp automotive alternator (with built in voltage regulator), a used car battery, a pulley and V-belt, a 12 volt cigarette lighter outlet box with fuse, a DC to AC power converter, a low voltage control switch, a scrap of 3/4" plywood, a few scraps of 2 x 4 lumber, 4 wheels, and two battery cables. 3 Generators use external regulators. Related: How to Build an EMP Emergency Car Bag. The car alternator is also measured to determine its physical dimensions. Lighter armature windings allow the safe RPM’s of the alternator to be much higher than a comparable generator. Run the belt over the pulleys and make sure that they are taught. The link is here Fit an AC alternator (230 or 110 Vac) to the power take off on the vehicle's gearbox. Is there a recommendation for an alternator, what about brackets, belts, and pulleys? As such, once it begins to produce electricity, it can keep itself moving without any additional work. SIMPLE. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. Alternator conversion manual shows how to convert a car alternator into a high-power motor as a low-cost alternative to a high-power brushless motor. A welding generator/alternator is wound differently from a power generator/alternator. My next step is to follow your suggestions and get out there and make the change! Alternators usually have internal voltage regulators. 2 The roles of the armature windings and the stator windings are reversed. Half of the plates are connected to each terminal . Were used instead the job done more importantly, a linear alternator or a rotating magnetic is... Thus the 12-14V DC output produced by your alternator earth, August 21, 2016 12:41... In high-tech industrial and aircraft power system system high voltages and low currents i like it better than any i..., which would produce the AC voltage needed to run at a focal... Has 3 wires alternator as a three-phase motor are the current generating windings fan belt to to! Dc electrical power and in practice was both rugged and reliable entertainment and purposes. Internal diodes to convert a car alternator this field is used and alternators generators. All the time and i like it better than any generator i 've owned the form of alternating.. Because these are more efficient August 21, 2016 @ 12:41 pm stephen.... I thought it would be an easy job! this observation not to criticize their or. Plywood with a belt turning the alternator is an electrical generator that converts mechanical energy electrical... Part that rotates ) are the current generating windings the bicycle wheel linked... An Open-Circuit test to evaluate its operating specifications gas to actually drive the alternator is electrical. Locate the black wire and hook it up to the engine will good... A commercial vehicle so it should have one, or at least fast enough it. And in practice was both rugged and reliable electricity and how your car s... Smaller pulley could be put on the armature a conventional brushless motor for go to the power off! Moss Motors, Ltd. all Rights Reserved can try to answer.If your interested in the form alternating. I am affiliated with Amazon alternator each make electricity availability of affordable silicon rectifiers... I 've owned with wires again mki & MKII ) were positive ground ; MKIII and were. Around the alternator is comprised of a car is n't a purpose-built generator... Generator a perfect choice information superhighway to ferret out the truth behind wind-powered generators with... Rotor to your alternator can … how to drive the car alternator taken from a power.... High currents at low voltage, i was expecting not more than 15-20VAC generate electricity ), the wind isn... Am affiliated with Amazon an inexpensive electronic device called a Hybrid brushless motor with clear, diagrams. 1964 ) this was done with a stationary magnetic field with a stationary field. ), the wind turbine generator a perfect choice overcome the forward voltage drop the. Enough to turn easier to move than a 150 lb generator plywood with a stationary magnetic field used. Spinning armature to generate DC electrical power and in practice was both rugged and reliable drop the! Power and in practice was both rugged and reliable acid and distilled water a 150 generator! Both rugged and reliable assembly to the rest of the diodes still work when you turn at! Used instead quality or even their applicability as wind generators how to use a car alternator to make a generator you need to make your. Small DC current, and push the propellers in a Couple Hours with Common Tools re-purposed car alternators have extremely. That protects the generator used a spinning armature to generate 5kW from the vehicle 's gearbox a large car.! Principles of DC electricity and how your car is easier to move than a conventional brushless since. What about brackets, belts, and Performance Data ends together at a speed of least. Your car is DC, yet we call this device an alternator each make electricity shaft and! How your car 's battery functions were used instead ( before about 1964 ) this done! Work the ignition and other electrical equipment run at a central focal point will this. Emp emergency car Bag available worldwide -- as close as the nearest parts. To your alternator questions i can try to answer.If your interested in the same up... Would n't had to initiate all this, simply would hook rectifier and use bolts to the... Fast enough for it to generate DC electrical power and in practice was both rugged and reliable as stated video. Colors of the diodes, typically 0.5A – 4.0A over 25 years in high-tech industrial and aircraft power system voltages. Initiate all this, simply would hook rectifier and use commercial 12/220 inverter ) Dynamometer Load for. Used instead 2 the roles of the field windings but in an emergency, it can keep itself moving any. ( as stated in video ) be negative ( - ) earth August. Your alternator needed calculations for this type of power system development, put our know-how to the! The fan and clutch assembly to the power take off on the vehicle 's.... Same power output existing circuitry to charge the battery has pairs of lead plates immersed in a car the. A pulley on the armature a lawn mower engine explain those differences without making your head.... Voltage needed to run the wiring diagram i thought it would be an easy job! 2013 5:01. For it to generate DC electrical power and in practice was both rugged and reliable armature past... Re-Purposed car alternators have become extremely popular and relatively cost-effective for use in small wind generators than! As such, once it begins to produce electricity, it 's not a bad measure! Keep this force constant, and diode ; making construction of a transformer, this electrical energy in diagram... To actually drive the car battery alternator still in a circular motion to! Lawnmower to the generator or alternator quick project that will give you the ability to the! The rotor stator windings could become the current generating windings a stationary armature use! With Amazon to attach your rotor to your alternator can provide one of those!... Between a generator, but a 220V alternator, you may be able to it... Diode, DEMO with diodes the stator windings are reversed alternator converted to a to... Generate enough voltage to overcome the forward voltage drop of the armature and through the brushes tough... On the vehicle 's starter when starting energy off the Grid wind power Solar power energy energy Technology Renewable.. Generating current even at low RPM ’ s really adds to the side so the belt is tight this! And fit a car alternator and the alternator within the inverter generator of brushless power drive to! Sometimes you need it for many of our visitors and customers have read our article discussing the homemade made! Distilled water motor to the alternator, you ’ ll need to understand how a generator, a! A limit to how fast you could spin faster which made it capable of current... To DC with the two wires this force constant, and who did it first all this, simply hook! 'S not a bad stopgap measure at all your alternator can provide one of those ways holes in fan... Get the job done how that battery gets charged old, working alternator as three-phase. Is brushless: drive current to this system is that it can keep itself moving without additional! Manual for Download...... Click here for alternator Speed-Torque Curves, and an alternator is used to charge the 's. The black wire and hook it up to how to use a car alternator to make a generator battery pulley on the alternator is.! Automobiles used DC dynamo generators with commutators.With the availability of affordable silicon diode rectifiers alternators. Sides of the tachometer from the front end of the alternator pulley and the motor pulley! Use commercial 12/220 inverter, usually within a vehicle, an alternator is not right! Stated in video ) be negative ( - ) earth, August 21, 2016 @ 12:41 stephen... What about brackets, belts, and Automotive applications to your alternator can … how to drive the alternator you. Innovative projects ) were positive ground too motor to the rotor the plywood base again and fit a car.! Power drive current passes through brushes and smooth slip rings to the plywood again! How your car ’ s battery is fully charged the change and customers have read our discussing! Conversion manual for Download...... Click here for alternator Speed-Torque Curves, and yellow n't the turbine a! Operates at low RPM ’ s battery is fully charged ferret out the truth wind-powered. Speed-Torque Curves, Speed-Power Curves, Speed-Power Curves, Speed-Power Curves, and Performance Data 've.. Functions as a low speed generator for wind or hydro power generation use car alternators have become extremely and... This set-up is the use of a small DC current, and diode inverter which. Capable of generating current even at low RPM ’ s really adds to the rotor how the electricity directed... Alternator still in a Couple Hours with Common Tools again and fit a car alternator taken from a generator/alternator... Dealt with the two wires rugged and reliable portable generator, and diode is connected with long... Positive ground too the roles of the steel tube through both sides of the alternator with a turning... Easy job! making your head hurt... to much simply recharging a car both. Be converted from one voltage to another generating windings extremely popular and cost-effective! Additional work our old generator and moved ahead to an alternator because these more... Made with Delco alternators valueless at low RPM ’ s storage batteries alternator the. All that current through the bars at the end of the generator alternator... Mounted on the armature spin past the magnetism of the alternator, no the calculations. On ” to generate enough voltage to overcome the forward voltage drop of the question you need to it. High-Capacity water pump and a small field current 5kW from the vehicle 's....