A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines.
The first V12 engine was built in 1904 for use in racing boats. Due to the balanced nature of the engine and the smooth delivery of power, V12 engines were found in early luxury automobiles, boats, aircraft, and tanks. Aircraft V12 engines reached their apogee during World War II, following which they were mostly replaced by jet engines. In Formula One racing, V12 engines were common during the late 1960s and early 1990s.
Applications of V12 engines in the 21st century have been as marine engines, in railway locomotives, as large stationary power as well as in some European sports and luxury cars.
I'm looking to detect when a device in a 12 volt systems is on, so that I can do something with that information -- like feeding it into an and gate. The device has it's own on/off switch inside it, so I can't simply detect at the regular on/off switch.
I was thinking about putting a small...
I'm having issues with overheating and need a little help.
I have 8 6v4ah rechargeable lead-acid batteries. I wire 2 in series for 12 volts. Then i wire the sets of 2 in parallel, because I want to keep my system at 12 volts. That means I have 16 amps. Every time I add more sets of...
The Lead Acid Battery in my H-D '09 FXDF is rated 12V at 19Ah. If I understand the math correctly, I would need a 12V capacitor rated to 5,700F. Is this accurate?
1 F = 1 As/V
1 Ah = 3600 As
19Ah x (3600As/1Ah) = 68,400As
(68,400As/12V) x (1F/[1As/V]) = 5,700 F
As I understand it...
Ok, I'm not sure if this is the right place to ask, but similar other posts are here.
I'm a little rusty with my electronics (I used to tinker back in school, but not so much now)
So here's the deal, this is an automotive application.
I have my truck which has a 1100CCA 12V battery and...
Hi,
Can anyone help me to figure how to get 12V for the dc motor using 24V supply.
I would like to use a 12V supply but that would mean some changes to the wiring.
Instead of rewiring,I would like to just make do with the 24V supply.
I will need a series resistor (ranging from 1k -...
hi all,
im sorry if this is a very basic question,
i am installing a aftermarker HID kit on a vehicle with daytime running lights.
the hid kit requires a 9-16v input.
vehicles headlights have a power of 12v
the daytime running lights give less than 9 volt, i believe it is 6 volts to the...
Any EEs out there who can help me with a circuitry question?
I purchased an Estes rocket for my kids that uses a small chamber to run DC current through water and produce hydrogen which is, in turn, the fuel to launch the rocket. It's great when it works but the problem is that it runs on 6...
I want to know if I am figuring correctly. I am putting together a 12 volt 3 amp DC power supply. The formula in the instructions is C = Tc / R. I figured the required cap to be 20,750 uf. When I went to a couple of supply catalogs to check the price for the cap I found that no one had had a...
Lets say I want to move a kick stand on a motorcycle by use of a motor. Hooked up to the battery and a button on the handle bar. Is there a way of controlling the motor so it will automatically shut off when the kick stand has swung down all the way? Also when it has swung back up?
Thanks, Hoovy
Hi there :)
I need to build or buy an inverter that transforms 12V DC to 14 AC 50Hz. It's for my guitar sinthetizer, i need to play with it in the street with my 12V batteries. I've tried with an 12V->220AC inverter pure sine (from Velleman) but it introduces to much noise in the guitar.
Any...
Hi
I have a 9v motor (can run to 24v). I need to control the speed of the motor and reverse the direction. I also wanted to control it with a duel-potentiometer, but i can't seem to find any way to do this. can someone help with a circuit diagram please?
(This is my first time building a...
Dear electronic gurus,
(2 part question) I want to check that:
If i got a 12V motor (such as http://scientificsonline.com/product.asp_Q_pn_E_3041860" )
would i be able to adjust its RPM if i got a:
12V dimmer switch box...
when u go up in volts then your amps will go down.
How can I then increase amps?.
Is it just by increasing the power of the source?
Any help. Explain please.
Hi,
I’ve recently come across brushless motors and their use in rc cars. The motor can supposedly bring a power of over 1000 Watts using for example NiMH batteries. BUT on those packs I read like say 2500mah, 12V , 5 AMPERE. Can an NiMH battery really release around a 150A current? If so can...
hi all,
i have this qns which i been figuring, but can't get the right circuit.
i have 2 12v batteries. which i want to wire in series to give it a 24v starting to a motor.
however by doing that, i am unable to charge both batteries as my rectifier is only able to charge 12v. I need to...
I work on cars, and love the led look in the taillgiht of a car or vehicle. I want to learn how to make them, I know how to solder. I have made one just playing around, but am not sure if it is set up right. The first questiong I have is how do figure what type of resistor to use with how many...
I have an operation where I need to reduce the speed of a 24v DC bilge blower. My question is: Can I put any 12volt or 24volt DC motor on a speed controller and reduce the speed of the blower/motor without damaging the motor, creating an unsafe/over-heating condition, or without reducing the...
Ok,
I know DELL sells these really expensive DC to DC 'adapters' that can run my laptop. I can also run it from a DC to AC converter and plug my charger into that.
But obviously, wouldn't it be simply a matter of having the right cable ?
I'm just wondering what that DELL cable really does...
Hi there, I need some help in getting this calculation done. I need to find out the number of batteries needed to power 5 devices of 12V for 18 hours. The voltage of the battery is also 12. Power of battery is 9600 watts.
Please help. Thanks!
Hi all...
I plan on using the following device: "[PLAIN Manual.pdf"]http://www.pc-control.co.uk/images/Wasp Manual.pdf[/URL] to monitor 12v lines in a jeep and respond with various actions.
A simple example:
Monitor the 12v+ line for the vehicles brights, when it gets hot (hot meaning...
Hello all,
I am stuck in a rather simple, yet confusing quandary..
I'm working on designing a light kit for a Honda side x side utility vehicle. We are planning on drawing power from the back of the existing cigarette lighter auxiliary outlet on the instrument panel, and running the power...
I have 4 lead-acid batteries in parallel that I need to recharge. The batteries are Genesis NP7-12FR batteries rated at 12V, 7.0Ah. I need to create a circuit so that when I plug it into a 120VAC wall socket the batteries are charged. I was thinking of using a DC power supply but have no idea...
Hi All,
I have a step down Transformer 240v AC to 12v 100amp output.
My question is, can i use this as a step up transformer as well by connecting to the other side of it?
My supply voltage is of course 240v AC, this can be controlled with a 240v 10amp Variac to take it easy on things...
A 10 ohm resistor in a series with a bulb and a 12v source.
a) If the 8.0V is across the bulb, what is the voltage across the resistor?
I wrote 4v, is this correct?
b) What is the current in the circuit? I wrote 1.5A, is this correct?
c) What is the resistence of the bulb? Could...
I have 3Kva UPS in which it has 6 12V 17Av batteries in it. which give me 10 minutes maximum backup on full load.
What if i would like to increase the backup time,
Can i additionally install car 12V 125Av battery with it?
or additional battery bank with high Av batteries.
Please can...
Hi,
I am looking for 12V pmdc brush gearmotor either having rated torque of 3.3 N-m or a rated torque of 5N-m (preferable). I founded certain matching specs on Anaheim Automation but the motor seems bulky (around 1.7kg) and have a length of around 17 cm. I need something lesser than or around...
12v to power household appliances??
How can I use a 12v battery to power household appliances such as computers/TV ect...
Do I need some type of converter? I was told that a 12v battery won't power household appliances because they are designed to run off of the 100v house circuit. Where...
can anyone please help me, i want to know that whether 12v DC from a battery is same as 12v DC from a transformer ( after a 4 diode bridge has been fixed to it )... please help, because i want to expeiment something, i removed the 12v battery of my UPS and put in its place a 12v transformer, but...
Hello all. First thing I have to say is I don't understand much about power and electricity conversion rates. But I do have a need to have two different motors, each requiring a different power load, to run off of a single source AC 110 house outlet.
First device: Volts: 12, Amps: 3.3, uses...
In a 12V dc typical car how could you possibly obtain a 24 volt power source that would charge off the existing alternator, without upgrading the entire car to run off the 24V power source?
In the engine bay I would like to have access to 24Vdc power so was hoping I could either install two...
I'm having a tough time wrapping my head around something that seems so simple. The Question is:
What is the maximum output power from a 12 volt battery that has an internal resistance of 6 ohm ?
The answer from this books is 6 W?
My formula
First I need to find the current
I = V/R...
I have a circuit that can be powered by either a 9V battery or a 12V battery.
Can I connect a 9V battery in parallel with a car cigarette lighter 12V battery plug, so that the supply's are now in parallel with one another and they can both power the circuit?
I'm a bit scared because 12V...
I need help with this question... The manufacturer of a 12V car headlight specifies it will draw a current of 6A. You would like to check this claim with an ammeter designed to measure currents up to 10A and having a resistance of 0.1 Ohms. Which of the two figures below represents a circuit...
Hi,
I'm wondering how to drive front and rear lights off one dynamo. See diagram for current setup.
Lights are hooked up to dynamo in parallel.
The LM7805 and LM317 are voltage regulators which drop the voltage from 12v to 5v and 10v respectively.
Currently only the headlight works, the...
The conventional solution to getting 12V 150AH emergency power from a lead acid battery is to have a fully charged battery constantly being trickle charged. This is an unappealing solution for three reasons. (1) It seems like a waste of electricity when a year or more may go by before the...
Hi, can I connect two 12v batteries in series to get 24v and also each battery has individual connectors connected to 12v alternator from engine for charging? Would this cause problem?
Or what type of converter (if there is one) that can do 12v to 24v with max. 50amp.
Another option I...
what is the simple way to change 24volt circuit to 12volt circuit. i have to plug a converter into a 24volt cigarette lighter to charge battery for computer. the converter only takes 12volts input and will not work with the 24volts the system has for the lighter receptical. so i have to...
http://forums.bimmerforums.com/forum/showthread.php?t=863426
hope that that link works cause if not you prob have to log in
but let me give you the gist of it.
you know those like gtech pro dyno's
that you put in your cig lighter that measure hp and tq and such
how do they work...
Hi
I need to build a 12V alternator inside a pressure casing that will be driven by a propellor. This will be mounted on the rear on an oceanographic sensor platform that will be towed behind a ship on a long cable with the ship's forward motion providing the spinning of the prop, for the...
Homework Statement
The manufacturer of a 12V car headlight specifies it will draw a current of 6A. You would like to check this claim with an ammeter designed to measure currents up to 10A and having a resistance of 0.1 Ohms.
http://img168.imageshack.us/img168/7831/oaammeterqk3.th.png...
Hi, I'm currently an art student at the University of Houston, and I've run into a bit of a roadblock.
I'm working on an installation in which an audio signal from a headphone jack will be sent to an A/V Receiver Unit. From the A/V unit, the wiring for the left speaker will be hooked up to...
I just bought a 320w TEC to cool my processor. But the problem is, I can't afford a power supply that can provide enough amps through a single 12v rail. If I buy a power supply that has dual 12v rails, can I wire them together in order to provide enough amps to the TEC? I won't have anything...
Homework Statement
A 12 V battery is rated at 200 Ah (Amps hours). How much total energy can it supply?Homework Equations
P=IV
The Attempt at a Solution
First I did E = 1/2 C V^2. (Got 4,320,000 J, although I'm not sure if that is correct). But now I need to convert it to kwh so my question is...
Dumb question, I know.
But what exactly does it mean? Does it mean 36watts is what a bulb will consume at 12v?.. And does '12v' mean that the bulb will only work at 12v. What if you connect the bulb to a 24v supply?
Please excuse my ignorance.
Hi there, I'm new here. I'm working on a project and I have a technical question regarding the wiring of the components.
First, is wall power AC or DC? It seems that if there is a positive and negative terminal in the wall outlet, it would be DC (like a battery). But then again my...