You might be able to power a 12V device with 18V, but not for as long. The risk is perhaps a few dollars of wasted expense if it fails. As an addendum, if you want to stick to 18V, you could add another resistor to drop the voltage further and limit current to the lighted switch.
Full Answer
Can I plug a 12V battery into an 18v battery?
"12 volt" batteries really run between 11. 5 and 14 or so. This makes it easy to measure the life in a battery by simply measuring its voltage. Since 12V lead-acid batteries were originally designed for cars, there is a lot stuff that runs this way. 18V would be risky, I would not try to plug a 12V device into an 18V battery.
Can you run a 24 volt motor on a 12 volt battery?
While it is not recommended and depending on the model of motor, you can run a 24-volt motor off of a 12-volt battery. For a cable steer or hand-controlled model this will not hurt the motor, but it will considerably affect the performance of the motor. Can you use a 24 volt on a 12 volt system?
Is it possible to run a 12V generator on 18V?
Yes - the advantage is that you'll blow up all you're equipment and then the battery will last a very long time. Most equipment rated for 12V is spec'ed to run between about 11 and 14 volts. Running it at 18V is a very bad idea.
What happens if you connect a 12 volt to an 18-volt?
What will happen if we connect a 12-volt DC fan to an 18-volt DC battery? Every device has a little bit of smoke added at the factory. This smoke is necessary for the functioning of the device. If the smoke is allowed to escape the device will no-longer work. How do I connect 8 12 volt batteries to get 48 volts?
See 4 key topics from this page & related content
Can I run 12v motor on 18V battery?
Since 12V lead-acid batteries were originally designed for cars, there is a lot stuff that runs this way. 18V would be risky, I would not try to plug a 12V device into an 18V battery. But if you happen to have 18V for whatever reason, you can always use a DC-DC converter.
Can 18V power 12v?
You might be able to power a 12V device with 18V, but not for as long.
Can I run a 12v DC motor on 24v?
If you were to run a 12v motor off a 24v battery the stall current could then be excessive if it weren't limited by the controller. Therefore, provided you chose a controller suitable for the motor you use, you can usually run a motor 12v motor from a 24v battery with no effect except that full speed is doubled.
What is the max voltage for a DC motor?
Typical DC motors may operate on as few as 1.5 Volts or up to 100 Volts or more.
What resistor do I need to drop 18V to 12V?
1 Answer. Show activity on this post. The problem with using a resistor is that its voltage drop varies depending on how much current the motor draws. At 60mA you would need (18V-12V)/0.06A = 100Ω, but at 300mA you would need (18V-12V)/0.3A = 20Ω.
Can I use an 18V power supply for a 12V pedal?
18v into a pedal designed for 12v could damage it. Depending on what it is, it might work on 9v. It probably won't sound the same, but it might sound better. It won't damage it.
What happens if I use 24V instead of 12V?
12V systems require massive wires when pulling large loads because the current (amps) are higher. As we have already learned, 24V systems reduce the current or amps two times, then a downside of a 12V system is the amperage is double that of a 24V system at the same power.
Will a 12V motor run on 9V?
It's possible to run a 12V motor on 9V, but it will run slower and with less Torque.
Can I use a 24V power supply on a 12V?
You'll need to purchase a transformer or voltage booster, or, more straightforwardly, a 24V power supply. The reason is that a 24V LED strip has 6 LEDs in series per group, and there is no way to "split" this to match a 12V power source.
What happens if you run a DC motor at higher voltage?
On the other hand, running a motor at a voltage higher than nominal increases current draw and can cause the motor coils to overheat, decreasing motor life.
How much current does a 12v motor draw?
0.1 HP = 8 amperes. 0.2 HP = 17 amperes. 0.5 HP = 42 amperes. 1.0 HP = 85 amperes.
Can I connect DC motor directly to battery?
Can I Connect Dc Motor Directly To Battery? A DC motor can be powered directly by a battery. There is no need for a voltage regulator or similar device. The voltage of the battery will be approximately 24 volts minus the voltage drop on the transistors in the H-bridge.
Can I use 18V battery in 12V Makita?
Helpful? A: Thank you for your question. Makita 18V LXT® Lithium-Ion batteries are not interchangeable with Makita 12 12V max CXT® batteries.
What is the difference between 12V and 18V?
Given the same task, 18-volt batteries are going to run much longer than 12-volt. That's especially true now that 10 Ah batteries and even 12 Ah batteries are hitting the scene. You probably don't want to hold all that weight in a handheld tool, however. 18V tools weigh more and can run longer.
Is 18V drill enough?
A lot of people tend to get confused when considering whether to buy the 18V or 20V drill. For most people the choice comes down to the one that seems to be more powerful. Of course 20v Max sounds like it packs a lot of power but the truth is that the 18v is just as powerful.
What is stronger 12V or 20V?
Since 12V drills are not as powerful as the 18V or 20V and thus do not operate for long. However, their battery charges faster compared to the large drills. Several brands sell 12V batteries in the market, and they differ in prices and features.
What happens when you run a motor at 24 volts?
When run at 24 volts the coils will heat up much faster than at 12 volts, and the motor will not be able to release the heat quickly enough . Eventually the magnetic coils will become so hot that the insulation melts and shorts out, or the insulation starts charring and burning until it again shorts out.
What would happen if a motor was over voltage?
The motor would produce more power , but that would be gained at the expense of greater stresses of all sorts. The commutators would arc and burn, the windings would become much hotter than intended, the bearings would be under more pressure, the insulation would certainly be closer to its breakdown point, and the condition of the machine would steadily get worse the longer the over voltage was maintained.
How does a motor turn faster?
simple wires (series wound, etc) will have brushes, commutator, etc… well they will try to turn faster. The motor Voltage constant Kv turns/volt will dictate how fast they will turn. They will probably try to turn twice as fast as when 12V is applied. When the fan turns a back emf is generated across the wires, which acts against the input voltage. The input 24 Volts is divided between the back emf across the windings which develops torque and the wire resistance, which will develop power loss = I^2*R which causes the windings to heat up. Another effect that occurs is that the iron laminations are also subject to an increased Flux. The motor has been designed for 12V and hence the amount of iron cross-section and the number of turns take the saturation characteristics of the iron into consideration. The higher the flux density the closer the iron gets into saturation. When it saturates, there is No back Electromotive Force. This allows the full 24 Volts to be applied across the wire resistance causing a huge sudden current to flow for just a couple of milliseconds and as the rotor is turning, again the bemf is generated and again with a current spike in the middle. These huge changes in Flux saturation pulses heat up the iron and the huge current pulses heat the wire. Now depending upon the amount of increased air flow (due to the higher fan speed), this may cool the wires and the motor iron sufficiently for a little while, but don’t bet on it. if the load is large enough then the rotor will slow down and the back emf will reduce causing more power dissipation in the wires which will eventually heat up and then a point will be reached to…… oops, again the dreaded magic smoke.
What is a 15V battery?
A 15V battery is used to power a 12V DC motor. Does this mean that the motor only leaves 3V after (15-12)?
How many amps does a 12VDC fan draw?
For an extreme example, if the 12 VDC fan is a typical automotive air conditioner fan, it may want to draw 15 Amps at 12 VDC (180 Watts). Now, suppose your 18 VDC source was a pair of standard 9 Volt transistor batteries. I doubt that this 18 VDC source would even be able to twitch the rotor of the fan motor; it would just sit there while rapidly discharging the batteries.
What is a fuse in motors?
Another, but best way is to use a fuse. A FUSE is an Overcurrent Protection Device. The fuse limits the maximum current. If the current exceeds the desired (maximum) current, its wire will melt consequently protecting the motor from over voltage.
Why does a fan run at a higher speed than usual?
If it's able to withstand ( talking about winding of motor) such a higher votage than 12 V then fan will run at higher speed than usual as speed is proportional to the applied voltage.
How many volts does a 12V circuit need?
Most equipment rated for 12V is spec'ed to run between about 11 and 14 volts. Running it at 18V is a very bad idea.
What would put a 12V battery in danger?
For astronomy equipment the only thing that would put a 12V battery in danger is a short circuit. "12 volt" batteries really run between 11.5 and 14 or so. This makes it easy to measure the life in a battery by simply measuring its voltage.
How many amps can a battery deliver?
Batteries are rated in "amp hours" So this means it can deliver 1 amp for x number of hours, or x amps for 1 hour. (or whatever in between) A battery would also typically have a maximum amps it could deliver continuously before the terminals melt, but most electronics wiring will melt before that.
How many amp hours does a battery last?
There is no amp hour rating for equipment, only amps. Amp hours is the number of amps times the number of hours you want to use it. If a device needs 2 amps to run, and you have a 10 am-hour battery, you can run the device for 5 hours before you've emptied the battery. If your device only needs 1 amp, then it will run for 10 hours on that same battery before it is drained.
How many amps does a dew strip use?
Example, mount uses 3 amps per hour, dew strips uses 4 amps per hour, camera uses 0.5 amps per hour and guide camera uses 0.5 amps per hour, this means you will need battery with a total of supply of 8 amps per hour. Let us say you want to use it for 6 hour star watching outings.
What voltage is recommended for a syringe?
Only recommended if you know from the manufacturer it is supported at 18V!
What to do if amp meter readings are not in specs?
You contact the companies if the readings are not in the specs or you post your equipment and ask other owners. If you still can not find the information you will need to buy an amp meter and take readings on your equipment.
How many mA does an LED use?
Perhaps 20mA at 100%, 40mA at 50%, and 100mA at 10%. Beyond 100mA, at any duty cycle, it isn't guaranteed to operate within the specifications given.
How much current does an LED drop?
If you supply 18V instead, we can calculate the new current. The LED will still drop about 2V, leaving 16V across the resistor.
How much power does a through hole resistor need to dissipate?
Turning our attention back to the current limiting resistor: A "typical" common through-hole resistor can dissipate 1/4 watt (250mW). How much power does the resistor actually need to dissipate under normal circumstances? Using numbers from before:
Can you move 12 tons across a bridge?
An analogy: You can probably safely move 12 tons across a bridge rated for 10. The risk and cost of failure is quite high, though, so you probably wouldn't take the chance. You might be able to power a 12V device with 18V, but not for as long. The risk is perhaps a few dollars of wasted expense if it fails.
Can two 9V batteries be connected in series?
Two 9V batteries can also supply 9V if connected in parallel. Because you stated 18V, it's apparent they are connected in series. Note that had you omitted the voltage, specifying a quantity of batteries alone is not enough information to know the supply voltage.
Can you add another resistor to a lighted switch?
As an addendum, if you want to stick to 18V, you could add another resistor to drop the voltage further and limit current to the lighted switch. It would help to measure the current (at 12V) with a multimeter, so you can better determine what's contained in the switch.
xc351 Member
Well I need to use a old spare drill I have to make wet tumbler. Basicly I'm trying to figure out what kind of power they use (basic ryobi drill) if they can be run on 12v and if they can be run on a speed controller.
aXis Member
Depends on the type of battery the drill is designed for. If they are Lithium then the internal controller will definitely cut out when the voltage goes low to protect the battery. With a NiCad or NiMH the drill may have wider toleranges.
xc351 Member
The drill is a nimh from memory as the battery lithium batts have low battery cut out in them.
aXis Member
Not 100% sure you'll be able to do speed control via the battery input. Give it a go with the drill on full power, but it may cause issues with the controller. Depends how smart or dumb it is.
mkusanagi Member
Newer lithium based drill drivers usually have inbuilt circuitry for overload and voltage cut off protection.
rainwulf Member
Remember the torque will drop down significantly at 12 volts, which also means the current draw will probably be higher then normal as the motor tries to overcome the load. This, with the fact that the inbuilt fan will be slower then normal means that the drill will probably overheat.
aXis Member
A wiper motor/gearbox is perfectly suited for this kind of work. Large hi torque low speed motor.