A rectifier power supply is an electronic component used to convert the alternating current (AC) output of a power supply to direct current (DC). This is accomplished by passing a current through a series of diodes connected in such a way that they interrupt or attenuate the AC ripple.
This is made possible by the ability of diodes to block current flow through them in one direction but allow current to flow in the opposite direction.
A rectifier power supply can consist of individual diodes or be presented as a single integrated package. Rectifier is used in power supplies of all sizes and can range from small surface mount components to very large industrial varieties.
Most rectifier power supplies serve two basic purposes:
To this end, the power supply will feature a step-down section, typically consisting of a transformer, which steps down a mains AC supply to the desired output voltage.
However, the output of this stage of the power supply is still AC and since a power supply generally powers DC appliances, it must be converted accordingly.
This is the job of the supply rectifier which is placed between the step-down transformer and the output of the power supply, thus producing a smoothed DC output.
The ripple or ripples in an AC power supply are caused by a smooth and constant change of polarity in the power supply. (Polarity refers to the relationship between the positive and negative points of the output).
In an AC power supply, this inverts between 50 and 60 times per second, thus giving an AC power supply its characteristic waveform. A DC power supply has a constant relationship between its positive and negative output points.
The function of the supply rectifier is made possible by passing the alternating current through an array of interconnected diodes. The arrangement of the diodes and their unique qualities force the fluctuating polarity of the AC power to exit the rectifier at the same positive and negative point on each cycle, thus producing a smooth DC output.
Rectifier power supply are used in all power supplies that produce DC outputs and can appear as very small surface mount components or large, rugged industrial variants.
Each rectifier varies by battery type. Some rectifiers apply to different battery types (models like this can be expensive).
When choosing a rectifier, make sure it matches your battery concerning voltage.
A rectifier may have some other functions, too. You can use it e.g. to diagnose the condition of your battery, to regenerate it, or to supply energy to keep it charged. These options might be useful if you want your battery to be fully operable for a long time.
The quality of your rectifier power supply is very important, and this is why sourcing for these products supplied by reputable manufacturer who can boast of good opinions and reviews online is very important.
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