REGULATOR – A device which controls the flow of current or voltage in a circuit to a certain desired level.
What is used to control flow of current?
The instrument which is used to control current in an electric circuit is rheostat.
Is a wire an insulator?
There are as many varieties of wire and cable insulation as there are wires and cables. Insulation is an important non-conductive material that surrounds and protects the individual wires or cables that make up a cable assembly. Some wire insulation is produced to resist electric current in electrical applications.
What happens if current is too high?
If the current flow gets too high, the fuse will melt. This destroys the fuse, but protects the remainder of the circuit.
How do you control current?
Basic constant current limiting circuit
The circuit for the power supply current limiter uses a sense resistor placed in series with the emitter of the output pass transistor. Two diodes placed between the output of the circuit and the base of the pass transistor provide the current limiting action.
How do you control amp output?
Lower the circuit’s amperage by adding a variable resistance device or increasing the resistance on any you already have in the circuit. Variable resistance devices include transistors, FETs and rheostats, which are two-terminal variable resistors. Reduce the voltage in your circuit to lower the amperage.
What is SI unit current?
The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 ×10−19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ∆νCs.
How do you detect current?
When using a multimeter to measure current, the only way that can be used to detect the level of current flowing is to break into the circuit so that the current passes through the meter. Although this can be difficult at times, it is the best option. A typical current measurement can be made as shown below.
What happens to the current in short circuit *?
When a short circuit occurs, electrical current experiences little or no resistance because its path has been diverted from its normal direction of flow. This in turn produces excess heat and can damage or destroy an electric appliance.