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How can you limit amperage drawn through a circuit without decreasing voltage I need to variably restrict amperage drawn from point 12amp to 1amp with the turn of a dial at 240v AC Does a device exist?
Wiki User
∙ 12y ago
i have a similar problem but mine doesn't need to be controlled with a dial. i think a carbon pile may be your answer. an old carbon pile battery tester through the circuit. either that or several resistors, select amount of resistors your circuit passes through with your dial switch, like a blower motor in your car would use. my problem however is finding a way to limit amps to 75 between two sets of batterys where amps have the potential of fluctuating from 0 to2600. a cannot just put a resistor in the circuit because they resist a set amount of ohms rather than only let a set amount of amps pass through. like a breaker or fuse. but i don't want a breaker or fuse because the circuit will be broken with them. I'm working on a 12v dc circuit. I'm not sure how a carbon pile will react on ac but it something to think about.
Wiki User
∙ 12y ago
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Is 110 volts 10 amps?
Voltage and Amperage are not directly dependent upon each other. Electricity is like water in the way that it "flows". Voltage is analagous to water pressure (like PSI), whereas amperage is analagous to the amount of water actually flowing (like gallons-per-minute). As voltage increases, amperage typically decreases and vice versa. But the actual amperage of a 110 V circuit depends on the device connected to it and how much current it draws. For instance, a 12 amp vaccuum cleaner is gonna draw 12 amps out of a 110 V circuit, whereas a 60 watt light bulb connected to the same circuit is gonna draw about half an amp (amperage=wattage/voltage, or amperage=60/110).
How does the fuse wire save your electrical appliances?
The fuse wire is rated for a specific amount of amperage. If the amperage exceeds that rating, the fuse wire will quickly melt. The current flow in the circuit is interrupted, thereby protecting the appliance from an overload condition.
How do you figure out resistance?
Turn off circuit. Then you can use a meter set for resistance, clip onto both ends of the resistor, meter will display the resistance in ohms.If you know the voltage and amperage you can use Ohm's Law: E=IRR=E/IR is resistance, E is voltage, and I is current (amperage)
What does a inductor do in a circuit?
DC current has no effect on the inductor(can be considered as a short circuit) as the current does not change in a DC supply voltage this one just produces a magnetic field which remains constant , as the magnetic field is not varying no emf is induced in the circuit , so literally it has no effect on the circuit when the supply is of DC voltage.when an alternating current is set up in a circuit , the Alternating current brings a magnetic field in the inductor which is variable (since the current is varying...) this variable magnetic field induces an emf in the circuit (back emf) which opposes the cause that is producing the change (lenz's law)explanation consider a circuit with an inductor connected to an AC voltageduring the positive half cycle when the voltage increases the current also increases in the circuit [take the current direction as clockwise] this causes a variable increasing magnetic field in the inductor , this magnetic field in turn induces current in the circuit which is opposing the increase in the current flow from the original source, the inverse happen during the decreasing half of the half of the positive cycle , here the induced current adds up with the decreasing current opposing the cause that produced this back current (cause :- decrease in current changes the magnetic field so the induced current is produced ..... it is opposing the change because :- the induced current either decreases the increasing current or increases the decreasing current )
What will an ammeter show if the circuit is broken?
Zero. No current is flowing in an open circuit. The ammeter will display an amount of 0 amps because there is no longer any current once the circuit has been broken. An ammeter measures current.
How do fuses protect wires from overheating?
The fuses restrict the amperage (electrical current/flow) of the circuit. The fuse is size according to wire size and load requirements. NEVER put in an over-sized fuse as it will allow to much amperage for the circuit which will cause overheating of the circuit and possible fire.
What is the cause and how would you correct a blown fuse?
The purpose of a fuse is to restrict amperage traveling through an electrical circuit to a specified value. It does this by inserting itself into the circuit and running the current through a metal strip inside the fuse. When the circuit is carrying to much amperage the metal strip will heat and then melt away, breaking the circuit and protecting anything that would be damaged due to the overload. In order to correct it, you must locate the fuse, remove it, and replace it with a new fuse of the same amperage rating.
Open circuit prevents the movement of what?
amperage
How do you pick the right fusible link?
Fuses are based upon the size of the wire of the circuit that it is to protect. The wire is sized by the amperage of the connected amperage load of the circuit.
If the resistance changes in a circuit the amperage will also change?
I=V/R The smaller the resistance the greater the amperage.
Why increase the amperige in the electrical circuit of a tractor?
why increase the amperage in the electrical circuit of a tractor
Formula for finding power in a DC circuit?
multiply the total voltage in the circuit by the total amperage
When a circuit is inductive the current has what voltage?
This doesn't make sense, "current" is "amperage" so the higher the voltage the lower the amperage, and the lower the voltage the higher the amperage.
What is A measure of the number of electrons flowing through a circuit?
Amperage.
Does surge strips provide a built-in 15amp circuit breaker?
If the circuit breaker is in the off position there is no need of overload protection. Overload protection monitors the load amperage, If there is no amperage through the circuit there is nothing to monitor.
How do you find the proper circuit breaker for an air conditioning unit?
By reading the manual cocerning circuit amperage
What is the amperage of a 9.6v 1600 mah battery?
The amperage is governed by the load that is connected to the battery circuit. Divide that amperage into the 1.6 amp hours and that will give you the endurance of the battery in hours.
