12Volt and 24volt systems

7 Апр 2014 | Author: | Комментарии к записи 12Volt and 24volt systems отключены
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and 24-volt Sytems:

Two 12v batteries give you 24v. Your already has 2 12v batteries in it and it’s a 12v system right?

You are correct, two can provide both 24 Volts or 12 Volts (nominal), depending on how are wired.

If the positive terminals are together (same for the negative which are connected to ground, in modern vehicles), the system is a 12 system.

If one battery has its positive connected to the negative terminal on the it is a 24 Volt system. Of course, of the two terminals, the free negative is grounded (connected to the chassis), and the positive one is connected to the rest of the system.

IF the batteries are the same the POWER available from 24 V and 12 V systems are exactly the same. The available is double in a 12 V system, and the size has to be larger in order to the higher current with the loss of power.

[Current through a non perfect conductor heat, and the amount of heat depending on the resistance in the wire. The the resistance OR the current, the more and the more power lost. If the gets to be too great, the wire burn.]

Hummers are 12 Volt systems. makes them compatible the other vehicles on the road. why do we need two batteries? In order to the glow plugs, and crank the compression diesel engine.

I know for sure, because I no with gas Hummers, but my guess is have only one battery. It not take two to crank a 350 small

Humvees are 24 Volt systems, them compatible with of the military vehicles in service. The is trying to standardize on equipment, for of fueling, and maintenance issues jump starting, and battery The Army has settled on 24 Volts, and for fuel. JP-8 runs helicopters, and will work fine in diesel engines (a bit power, but MUCH cleaner).

they have some systems left that use and 12 Volt starter/electrical systems, but are being retired.

To further confuse the civilian diesels have historically 24 Volt systems. This is of the higher compression. While it is that two batteries, whether (12 Volts), or series (24 Volts) will produce the same it is MUCH easier to transfer at higher voltages.

The brushes and suffer much less if the CURRENT is lower. [This is one the power companies use high (high voltage) transmission The other reason 24 Volts is is because the wires can be smaller. wires as battery cables is but it make motor design and much easier, like the motor.

However, especially in trucks, 24 Volts was just too trouble for the owners and users. need special attention, the use of a second alternator, or a special power supply to provide with 12 Volts. Bulbs are somewhat hard to find, and expensive.

Further, bulbs are the ONE where higher current is The filament has to be thicker to produce the light, so they are physically and will take more before breaking.

Still, large trucks, buses, and some RVs use 24 Volt systems.

I have yet to wade in on the jump issue. Here goes. JUMP START 12 VOLT FROM 12 VOLT SOURCES, AND JUMP START 24 VOLT FROM 24 VOLT SOURCES one POSSIBLE exception).

If you have a 24 Volt vehicle, it is very 12 Volts would be any help. since batteries are dead at 9-10 Volts, you will be draining the batteries, drawing Volts down to 12. Someone just jumping to one (hopefully the battery.

If the 24 Volt system is not dead, but marginal, this is to people, and not too rough on the batteries.

keep in mind that if you are successful starting a 24 Volt from a 12 Volt system, as as the 24 Volt system starts, the will product 24 Volts, and the jumper cables, it is going to 24 Volts into the 12 Volt Good-bye stereo. Good-bye Maybe good-bye voltage and alternator.

Leave 24 Volts the 12 Volt battery for any length of and you can have it explode.

If you have a dead 12 Volt don’t even think jumping it from a 24 Volt Will you be able to start the Sure.

Will you burn up, or the life of electrical components in the 12 vehicle? YOU BET!

Would you even think about your car stereo up to 24 Volts? you are, even if it is off. The of a power switch actually off the power to a component are LONG Your CD player, your your amps, ALL have applied to the circuitry, and are held by the power management circuits. the clock is always powered.

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as above, you risk a battery and damage to the voltage regulator, the and just about anything electrical.

Any bulbs which are on have twice the Voltage to them. Two times does not that bad does it? Well, the Current is a direct result of the Voltage and the Resistance, the Current too!

This means the consume FOUR TIMES the — though for a short

The exception? If you really know you are doing, you can jump from the of the battery stack. Hook the jumper cable to where the two are connected together (+ to -) and connect the lead to ground. This give you 12 Volts for jumping.

A though, it is not good for the batteries, it should not cause a problem if only very occasionally. worse is when people tie loads, like stereos, to point to get 12 Volts. The high is constantly overcharged, which boil out the water.

The grounded will be constantly undercharged, to a very short life.

are 24 Volt battery chargers. If one two of the proper 12 Volt chargers, can be sued to charge a 24 Volt if wired in series. The proper must not have the AC line pin connected to the ground (black) lead.

If the AC line cord pin is connected to the black or minus the batteries will have to be in order to charge them at the time.

Also, you could the series wired batteries and wire them in parallel for from one 12 Volt charger.


—chip

12 Volt 4 dr HT

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