0
Potential Divider
A voltage is a difference in potential between two points.
A potential divider is simply a pair of resistors in series or a variable resistor used to provide a split point between the two end points of a voltage applied across them.
As such, it is able to provide a fixed or variable potential at its center point or at the wiper of the potentiometer.
Power is not conserved in a circuit of this type, the current of the new output voltage is lower than the input current.
Transformer
A transformer, converts electrical energy whilst maintaining (within practical limits; there are some small losses) the same power ratio - i.e. the Voltage and Current entering are transformed to maintain the power ratio at the output.
This is done by having concentric, insulated, coils of wire around a shared metallic core. The number of windings in each limb of the transformer is used to determine the transfer ratio, e.g. (the following numbers of windings are ridiculously low to keep the math simple)
100 windings on the input side and 50 windings on the output side makes the transfer ratio 2:1, so 240 volts in will give you 120 volts out at double the current
100 windings on each side makes the transfer ratio 1:1, so 240 volts in gives you 240 volts out at the same current
50 windings on the input side and 100 windings on the output side makes the transfer ratio 1:2, so 240 volts in will give you 480 volts out at half the current.
Autotransformer
An autotransformer, unlike normal Transformers, provides a single winding with multiple output terminals, i.e. it is a single coil with two endpoints and several intermediate points, from which power can be tapped. This corresponds with its name: auto (self)-transformer
It operates by applying the input voltage to any two terminals and tapping the output from any two terminals, provided that one is a common terminal with the input.
Autotransformer vs Potential Divider
An autotransformer converts voltage from one level to another whilst maintaining the same power, i.e., voltage x current = P at the input is converted to new voltage x new current = P: the power remains the same.
A potential divider on the other hand, creates a new potential at its center/wiper. The new, lower potential is also at a lower current, the power is reduced.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is difference between interposing voltage transformer and potential transformer?
potential transformer is to maser and protection purpose the ivt is used for synchronicing purpose
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 the difference between control transformer and Potential transformer?
Control transformer used only for control supply 110,220, 24,12V AC. But Potential transformer used voltage measurement purpose.
What are the advantages of double wound transformer over a auto transformer?
The difference between a double wound step up transformer and an auto transformer is the double wound on the step up transformer and the single wound on the auto transformer.
What does auto in autotransformer stands for?
"Auto" refers to the single winding used an auto transformer.
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.
Can you use ordinary transformer in place of auto transformer?
yes we can place auto transformer in place of original transformer
Why auto transformer is lighter than conventional type?
because the copper is saved in the auto transformer that is the ratio of weights of copper in auto transformer to normal transformer is (1-(1/a)) where a is transformer ratio
Difference between potential transformer and current trasnformer?
The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.
What is Auto transformer and ordinary transformer?
auto transformer is a one winding transformer which is are used for step up and step down voltage without chang its power and friquncy
What is difference between interposing voltage transformer and potential transformer?
potential transformer is to maser and protection purpose the ivt is used for synchronicing purpose
Voltage across Neutral and earth for a 3 phase auto transformer?
A grounded neutral will be at earth potential. A floating neutral will be at a voltage dependent upon the voltage imbalance between phases, and the design of the transformer.
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 kind of circuit lowers voltage?
you can use a voltage divider or a step-down transformer to lower voltage.
What is the difference between control transformer and Potential transformer?
Control transformer used only for control supply 110,220, 24,12V AC. But Potential transformer used voltage measurement purpose.
