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A step down transformer is used in rectifier circuits so as to bring the rectified voltage to within a reasonable value of the desired output voltage. It is a design decision, based on a compromise between various aspects of the filter and/or regulator that might follow the rectifier.
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Can the two end of a center tap transformer be use with out a rectifier?
The twoends of a center tap transformer cannot be used without a rectifier.
Why a full wave rectifier is preferred over a half wave rectifier?
The a.c. component, or ripple, produced by the 4-diode (full wave) bridge rectifier is the same as that produced by the 2-diode full wave rectifier. The bridge is connected across the secondary winding of a transformer. The 2 diodes of the other type of full wave rectifier are each connected to one end of a winding, but that winding requires a center tap. For any desired value of d.c. after rectification, the a.c. voltage of the 2-diode rectifier winding has to be twice that of the winding required for the bridge.
Natural commutation is used in which kind of circuit?
phase controlled RECTIFIER circuit used Natural Commutation......
What type of device is used to increase or decrease the voltage of an electric current?
The device used to increase or decrease the voltage of an electric circuit is a step up transformer or a step down transformer respectively. A Variable Resistor
Why filters are used in rectifier circuit?
to convert pulsed AC to something approximating DC.
Is a transformer used in full wave rectifier?
A full wave rectifier is a component or set of components that change AC waveforms into DC. It is frequently used as part of a power supply circuit and therefore it is often directly adjacent to a transformer. However, a transformer is used to provide a suitable AC voltage and is not part of the rectifier.
Can the two end of a center tap transformer be use with out a rectifier?
The twoends of a center tap transformer cannot be used without a rectifier.
Why is a transformer rectifier often prefferred for smaw?
SMAW stands for shielded metal arc welding. The rectifier used in the welding machines must be referring to this type welding.
How ac regulate the DC voltages?
to take an AC source and turn it into a DC output it would need to go through a bridge rectifier, then into a smoothing circuit, then into a stabilisation circuit, a transformer may be used before the bridge rectifier to either step-up or step down the voltage.
Why a full wave rectifier is preferred over a half wave rectifier?
The a.c. component, or ripple, produced by the 4-diode (full wave) bridge rectifier is the same as that produced by the 2-diode full wave rectifier. The bridge is connected across the secondary winding of a transformer. The 2 diodes of the other type of full wave rectifier are each connected to one end of a winding, but that winding requires a center tap. For any desired value of d.c. after rectification, the a.c. voltage of the 2-diode rectifier winding has to be twice that of the winding required for the bridge.
Natural commutation is used in which kind of circuit?
phase controlled RECTIFIER circuit used Natural Commutation......
What is a curect transformer?
A 'current transformer' is a type of transformer which, together with a 'voltage transformer' (or 'potential transformer' in N America), is classified as being an 'instrument transformer'. It is used to reduce large currents to smaller currents which can be measured safely, and to isolate the primary circuit from the secondary circuit for the purposes of safety. Current transformers are also used to drive protective relays used in high-voltage protection systems.
How does a rectifier transformer differ from a power transformer?
rectifier tr. is converting ac energy into dc energy. but power transformer converting step up or step down ac energy without changing frequency.AnswerA transformer and a rectifier are two completely-different devices. A transformer changes voltage levels, whereas a rectifier changes alternating current to direct current.There is no such thing as a 'rectifier transformer', although it is common for the output of a transformer to be rectified. Such combinations are widely-used in electronic components, where the mains supply must be changed to a low-voltage d.c. supply.The term, 'power transformer' is normally applied to step-up and step-down transformers used in the high-voltage electricity transmission system, as opposed to those used in the electricity distribution system, which are normally called 'distribution transformers'.
Why capacitor used in rectifier circuit?
To smooth the output of the pulsating DC.
How will be conduct test on transformer?
Short circuit test and open circuit test are widely used to test the efficiency of the transformer.
What type of device is used to increase or decrease the voltage of an electric current?
The device used to increase or decrease the voltage of an electric circuit is a step up transformer or a step down transformer respectively. A Variable Resistor
Can you use transformer for DC supply?
No. Only Transformer could not be used for DC supply.If yoy need to have DC out put,then rectifier unit required .
