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A rectifier is a device that converts AC to DC.
A transformer is a device that changes the ratio of current to voltage.
A computer power supply functions as both.
Answer found in CompTIA A+ Guide to Managing and maintaining Your PC 6th edition on page 154.
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What is the difference between a tranformer and a rectifier which are found in a computer power supply?
Transformer is a device that works only with AC (alternating current), and is frequently use to step up (increase) or step down (decrease) the voltage level. Therefore we can say that, in order to maintain or to bring the voltage level up to our requirement we use Transformer. Though there are many classifications of Transformer, but more or less there purpose is almost the same, however only the function of instrument transformers (includes current transformer & potential/voltage transformer) is bit different. Voltage transformer is used with high voltage power systems and is use to bring the voltage level up to the rating where it can be measured easily by ordinary instruments (usually 120V). Similarly current transformer is used to bring the high rating of the current up to the value where it can be measured easily (usually 5A). Rectifier is a device that is used to convert the Alternating current into Direct current or in short AC to DC converter is called rectifier. Rectifier is also classified as half wave, full wave, bridge, etc, but more or less there purpose is almost the same, except for the difference in their conduction pattern (half wave conduct for half cycle, full wave conduct in both directions for complete cycle). Conduction pattern of rectifier is determined by the number and working of diodes (the major component of rectifier). Kind Regards, Abdul Haseeb E & I Inspection Engineer at RICI Dammam, Saudi Arabia email: abdulhaseebb@gmail.com
Is a power supply an electrical transformer that regulates the electricity used by the computer?
Yes it is.
Define the efficiency of a rectifier?
The conversion efficiency n of a rectifier ckt is generally defined as Na= dc power delivered to the load/ ac power input to the rectifier ckt. Or n = Pdc/Pac
Would a computer be considered a capacitive load?
No because the very first component in the power supply is a transformer, which makes for it being an inductive load.
Why is input waveform from a transformer altered from a pure sine wave?
The input waveform from a transformer is altered from a pure sine wave because the load is not purely resistive, meaning in this case that it is not "continuous". Many loads do not pull current "all the time" during each line cycle. A power supply, for instance, only pulls current when the filter capacitor is being charged by the rectifier. This is because the rectifier biases on to charge the capacitor to the peak value of the input waveform, then the capacitor discharges at a rate dependent on load while the rectifier is biased off, until the voltage intersects the next rising input wave. This means the current load on the transformer is actually pulsing on and off. (This is true for both linear and switching power supplies, although you can reduce the pulsing with appropriate inductance in the filter circuit and a more complex design.) Since the AC supply is not "perfect", i.e. having a Thevanin equivalent series resistance of more than zero ohms, along with cables that do not have zero ohms, along with transformers that are not "perfect", this pulsing current induces a pulsing deviation in the input AC waveform. This effect can be observed even without a transformer in the circuit, but transformers make it more measureable, because the transformers introduce additional "inperfection".
4 What is the difference between a transformer and a rectifier Which are found in a PC power supply?
A rectifier is a device that converts alternating current to direct current. A transformer is a device that changes the ratio fo current to voltage. A rectifier is found in a PC power supply.
What is the difference between a transformer and a rectifier Which are found in a PC power supply?
A transformer is a device that changes the level of an a.c. voltage, while a rectifier is a device that converts alternating current to direct current.
What does filter do in a transformer?
A transformer does not use a filter. You may be asking about the use of a filter in a power supply. A power supply uses a filter to change pulsating DC from the rectifier into smooth DC for the circuits that the power supply powers.
What is the difference between a transformer and a rectifierwhich are found in a PC power supply?
The rectifier is what changes your AC into DC that the computer can use. Transformer raises or lowers the voltage. So you have 110 volts AC coming into your computers power supply. The Rectifier circuit in there changes the AC voltage to DC voltage but it is still to high for the computer use. The transformer lowers that voltage down to the various voltages that your computer needs
How a rectifier transformer deffer from a power transformer?
rectifier transformer converts acinto dc.but,power transformer convert step up or step down ac energy without changing frequency
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.
Does a transformer contains capacitor?
A transformer does not normally contain a capacitor. However, you might be thinking of a 'd.c. power supply', which consists of a transformer, rectifier, and smoothing circuits. The smoothing circuits will contain capacitors.
Is transformer is essential for rectifier?
no transformer is not necessary for rectification today most of power supplies have been made without using transformer in order to reduce weight and size of power supply.for example SMPS(switch mode poqwer supply)
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'.
Is there a component in the system unit that converts the wall outlet AC power into DC power?
In a wall adapter there is a device that converts AC to DC. Inside the adapter there is usually a transformer that reduces the voltage down to a working voltage of the equipment that the adapter plugs into. The output of the transformer is then connected to either a half wave or full wave bridge rectifier. More expensive adapters will have a resistive capacitive network in them to smooth out the ripple DC that is supplied on the output of the bridge rectifier.
The difference between a transfer and a rectifier?
A transformer is basically used to step up or step down the main power supply. The rectifier is used to convert an alternating current (AC) or voltage to direct current (DC) or voltage.
How do rectifiers and transformers work in a PC power supply?
There is no transformer used in PC power supply. There is rectifier used to rectify or convert AC input voltage into DC output voltage.Transformer based rectifier produces some spikes at the output DC voltage, hencethey uses SMPS (Switch Mode Power Supply) to avoid spikes to the output DC voltage and get a smooth DC voltage.
