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The most common type is resistive division. Say we have a source of V volts and we wish to apply a portion of the V volts (aV where a is between 0 and 1) to a load of resistance R. We can place a resistor R2 in series with load R to drop off the unwanted part of the voltage V. The math is a = R / (R + R2). This only works if the resistors are constant. For a changing load other methods are necessary.
Say the load needs 5 volts and it draws 10 milliamperes at 5 volts, but the supply is 10 volts. The effective load resistance is 500 ohms. A 500 ohm resistor in series with the load would drop off the unwanted 5 volt excess.
Suppose the load changes by 10%, but we wish to hold load voltage to 5%. We can place a 500 ohm resistor in parallel with the load and use a 250 ohm resistor to drop the voltage to 5 volts. The voltage change is now only 5% for a 10% load change.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoIt is a circuit consisting of two resitors in series with each other, so the voltage - or potential energy - gets divided between them. The resistors can be variable as well so that the voltage can change, for example, a LDR could be used so that when it is dark, the voltage across the LDR is low so the voltage across the other resistor would be high. This could be used to turn on street lamps etc. The ratio of the resitance of resistor 1 to resistor 2 is the same as the ratio of the voltage at resistor 1 to resistor 2, so if you had an 80 ohm resistor and a 20 ohm resistor connected in series with a 5 volt power supply, the voltage at the 80 ohm resistor would be 4 volts and the voltage at the 20 ohm resistor would be 1 volt. In equation: V1/V2=R1/R2 and so 4/1=80/20.
Wiki User
∙ 12y agoA potential divider is an arrangement of resistors which is used to obtain a fraction of the potential difference provided by a voltage supply.
Wiki User
∙ 12y agoit is widely used method for the bising of the transistor i also provides the stablization of a transistor
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What is a voltage divider circuit?
The voltage divider circuit is a network of two or more components in series, often resistors, between a potential difference. The voltage between the components will be somewhere between the potential difference across the whole network and so divides the total voltage into one or more intermediate voltages.
Why placing the ammeter between the potential divider and the voltmeter will give an incorrect value?
beacause ammeter is use to measure the current not to measure the voltage
What are the types of FET biasing circuit?
Various FET biasing circuits are as follows: 1. Fixed bias 2. Self bias 3. Potential divider bias 4. Current-Source bias
What is uses of divider?
to divide liangqin
How do design a high voltage voltmeter?
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
What is the difference between voltage divider and potential divider?
its the same
How does a voltage divider work?
The essential circuit of a voltage divider, also called a potential divider, is:
What is the operation of potential divider bias?
Thevenization of the divider circuit will help you see how it operates.
What is the voltage divider theorem?
it is aa linear circuit that produces the output voltage from the fraction of its input. It is also known as potential divider.
What is a voltage divider circuit?
The voltage divider circuit is a network of two or more components in series, often resistors, between a potential difference. The voltage between the components will be somewhere between the potential difference across the whole network and so divides the total voltage into one or more intermediate voltages.
How do you reduce12 volts to 6 volts?
use a potential divider with R2 and R1 being 100 ohms
How a rheostat is used is as a potential divider?
_____________ J| -_____/\/\/\/\_________+ | | | - + | |___i|i|___| E Well this is the circuit diagram , where r is the sliding jockey of the rheostat and a cell (E) is connected in parallel with the rheostat. By adjusting the jockey resistance of the rheostat can be altered which in turn would regulate the potential offered by the cell E to the main circuit. And thus a rheostat can be used as a potential divider.
How is a rheostat use as a potential divider?
_____________ J| -_____/\/\/\/\_________+ | | | - + | |___i|i|___| E Well this is the circuit diagram , where r is the sliding jockey of the rheostat and a cell (E) is connected in parallel with the rheostat. By adjusting the jockey resistance of the rheostat can be altered which in turn would regulate the potential offered by the cell E to the main circuit. And thus a rheostat can be used as a potential divider.
Why placing the ammeter between the potential divider and the voltmeter will give an incorrect value?
beacause ammeter is use to measure the current not to measure the voltage
When was Soul Divider created?
Soul Divider was created in 1999.
What is the advantages of variable resistor?
When we want to regulate somthing ;we use variable resistors for example :volume control in radios and volume in headset. Also , the variable resistors can forms a potential devider in which the overall resistance between the two end points remain the same,but the ratio of the two resistors in the legs changes.so the variable resistor is affectively a potential divider. Also, the variable resistor can forms a potential divider in which the overall resistance between the two end points remains the same, but the ratio of the two resistors in the legs changes. So, the variable resistor is effectively a potential divider.
What is function of a divider in electrical system?
what is function of a voltage divider in electrical system
