Can a DC motor be converted into a DC generator?
Yes, absolutely. In fact, in a brushed permanent magnet motor, no conversion needs to be done. Just spin the shaft and it generates DC voltage/current.For a brushless DC permanent magnet motor like a computer fan, you'll have to open it up. They use an IC and several transistors to convert DC into 3 phase AC (switched DC), you'll need to remove that and insert diodes to convert the AC coming out into DC.With the DC brushless motors used in model electric airplanes and cars, the speed controller is the electronics. So you only need to connect the three wires to a set of diodes to convert the AC 3 phase that comes out when you spin it, into DC. But you'll have to spin it VERY fast. The higher the KV rating (krpm per volt, not kilovolts), the faster you'll need to spin it to get a useable voltage.A DC brushless motor is wound as a delta or wye configuration (no centertap), so you'll need six diodes:Thanks to Instructables: Windmill Generator - why won't a small brush-less motor work as a windmill generator?
Consider a bicycle that has a miniature generator that is turned by one of the bicycle's wheels.?
The generator is connected to a headlight. For each part, choose one answer only. (a) When the headlight is off, the generator 1.transfers energy from the light to the bike 2.transfers no energy between the light and the bike 3.transfers energy from the bike to the light 4.could be any of these (b) When the headlight is on, the generator 1.transfers energy from the light to the bike 2.transfers no energy between the light and the bike 3.transfers energy from the bike to the light 4.could be any of these (c) Suppose the bicycle is coasting (the rider is not pedaling) along level ground. If the rider turns on the headlight, the bicycle will 1.not coast as far. 2.coast farther. 3.coast the same distance as it would have with the light off. 4.could be any of these
How to make a wheel generator for a motorcycle?
I like the idea of the electric powered vehicles specially those motorcycles, but what I don't like is that fact that they only go so far on a single charge and that you have charge them for around 4 hours at a time to get a full charge. I thought of adding a mini windturbine generator and a wheel generator inside of the back wheel to solve the charging situation and hopefully adding further distance traveled to the bike at full speed. My problem is that I do not have the knowledge to build a wheel like that as well as the generator to go inside of the wheel. What do you all think of this? I don't think there is a need to patent it as it is a common device already used...just modified to suit my purpose. I would welcome any suggestions as how I can go about this. And/or if you can help me out in the design process of the wheel....I would also need some financial help in building the bike or just save up and work on it slowly. who knows if it works out like I think the bike will we could market the bike and share the profit if any?
How much can I sell an unused power generator at a pawn shop for?
Well, those aren't really the type of items that most pawn shops will buy - especially the mini bike. Even if they would be willing to buy the generator, they will only give you like 20% to 25% of its value. You would be much better off selling such items on craigslist, but remember: CASH ONLY, no shipping, no money orders, no checks, no wire transfers, - CASH ONLY.
If friction did not exist, could you stop a bicycle that you were riding?
Run into a wall? Roll up a hill? Attach a generator to the spinning tire, and attach a resistive load? (Requires rolling friction between road & tire) Grab on to passing objects, and push in the opposite direction? Use a bottle rocket? (Newton: for each action...) Use an anchor? Or, wait for it to rain, then collect the rain drops in a container. You will impart momentum into the rain drops, and once they are going your speed, you can dump them(and collect more). Eventually all of your momentum will be imparted to the dumped water, and you will (effectively) stop. Just a few ways.
Does the battery in a motorbike charge automatically when we ride the bike?
Does the battery in a motorbike charge automatically when we ride the bike?Yes, the battery charges automatically in a motorcycle if the charging system is working properly.
What is a motorcycle rectifier and what does it do?
A motorbike rectifier is an electronic unit which converts 12 volts DC out of the 11 to 14 volts AC the generator/alternator in the engine delivers. Other than cars most bikes do not have a seperate alternator which is belt driven and sits beside the engine. Many bikes have their alternator in the engine housing near the crankshaft. An rectifier adjusts the voltage of the alternator mainly by burning the amount of electricity which is too much. Therefore rectifiers get hot - and are attached to the frame at an exposed position instead of inside the engine where it is hot anyway.
If my motorcycle battery is dead and i push start it, will it run ok and charge the battery?
Depending upon how discharged the battery is, it's not whether the bike has electronic ignition or not (excepting magneto ignitions found on may dirt bikes), it's the type of alternator as well as the type of carburation. If it has a permanet field alternator, even if the battery is very dead as soon as the engines starts turning, the alternator is going to produce enough current to energize the ignition. This system was very common on older Kawasakis and Suzukis. If it's an excited field alternator like Honda liked to use in the past (and also like automotive systems), that type of alternator needs current from the battery to energize the magnets needed to generate electricity. Unless the battery has enough juice to energize the ignition, you can push the bike to kingdon come and it'll never fire a lick. Also is if your bike has fuel injection. the fuel pump requires a fair amount of current to build up adequate fuel pressure, something a very dead battery isn't going to do. If it's a carburated bike with the tank higher than the carbs and gravity feed, then that's no concern. If you can get it going, it's going to try to charge the battery. If the battery will hold a charge, then you're fine, if not, it'll be dead as soon as you shut it off or very shortly thereafter. A good electrical system will handle full alternator output for a considerable length of time. By good, I mean clean wiring and battery connections. If you have overheating problems due to extending charging time, then there were problems to start with.