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Rectifiers turn A/C into D/C, but Transformers can only run on A/C.
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∙ 9y ago
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What are the applications of precision rectifiers?
Precision rectifiers are used in the design of instrumentation systems.
Will using a transformer to convert 230V to 12V DC consume more energy than using a few capacitors and resistors without a transformer?
no, the transformer is much more efficient <><><> HOWEVER- a transformer only changes the voltage of AC current- it does not change it to DC. You will still need diodes or rectifiers. You can also use a motor/generator- a 230v AC motor turns a 12 v DC generator.
What does a step up transformer increase?
Power is normally transmitted at high voltage through step up/step down transformers to minimize the power losses in the transmission lines (this is one reason anyway). Since power loss is equivalent to the resistance of the conductor times the current squared, stepping up the voltage by a factor of two cuts the transmission losses by a factor of (2^2 = ) 4.
Why transformer is used?
A transformer used to step up or down the value of voltage.
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.
How a transformer is very useful in ac supply?
Transformer is the only device which is capable to stepup or stepdown an ac signal. That's why its used widely in ac supply.
What is transformer w?
Transformer is a electric device which it can be used for to transfer the ac current one circuit to another i.e. To reduces voltage and without frequency changing. Many types of transformer available in various purpose i.e. Stepup transformer, stepdowntransformer ,autotransformer ,,,,,,,etc answered by arivukkarasu.a
What is stepup transformer?
A step-up transformer produces a voltage across its secondary winding which is higher than its primary winding. The secondary winding is connected to the load, while the primary winding is connected to the supply.
What are the applications of precision rectifiers?
Precision rectifiers are used in the design of instrumentation systems.
Is fans used in rectifiers?
no
How to make a charger from a VOLTAGE transformer?
A true voltage transformer is not designed for power applications; it will only supply so many VA to your charger. I would suggest you purchase a power transformer for this application. You'll need to rectify the AC voltage, and minimize the ripple. Rectifiers are used for the first part, capacitors, varistors, and power transistors can be used to minimize the ripple.
Where can rectifiers be bought for a good price?
Maplin offer affordable rectifiers. Rectifiers are used to convert alternating current to direct current. The process is also known as rectification. Rectifiers are often found serving as components of DC power supplies.
What is semiconducting oxides?
copper oxide is a semiconductor. it used to be used for power rectifiers.
Why stepup transformer uses ac?
Confusing question! If it is, why transformers use ac? Then it is, for induction there must be change in flux linkage which is possible with ac which frequently changes polarity. In dc there wont be any change. If que is, why step up is used? There will be considerable voltage drop with distant transmission. For this reason step up voltage is required with step up transformer. Since, in high voltages this drop is negligible or efficient transmission
Materials used in constructing a full wave rectifier?
Full wave rectifiers consist of two (for a center-tapped transformer) or four (for a single-ended transformer) diodes connected such that as the polarity of the AC input changes, the diodes steer the current flow so the output polarity does not change. The output of a FW rectifier is pulsating DC, which is normally then filtered or smoothed with a capacitor.
Will using a transformer to convert 230V to 12V DC consume more energy than using a few capacitors and resistors without a transformer?
no, the transformer is much more efficient <><><> HOWEVER- a transformer only changes the voltage of AC current- it does not change it to DC. You will still need diodes or rectifiers. You can also use a motor/generator- a 230v AC motor turns a 12 v DC generator.
What is the difference between step up and step down?
in transformers for instance a stepup transformer does exactly that, steps up the voltageAND/OR theamperage and a step down transformer reduces the same. if you have a machine that operates on say 120 volts alternating current single phase and your building or power supply in your buildingis set up for or delivers480 volts alternating current-three phase you will need a step down transformer to operate the machine.
