Two-pulse bridge circuit (B2) (Graetz rectifier) Basics of rectifier circuits 4
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To the playlist: • Rectifier two-pulse bridge circuit (B2) (Graetz rectifier) Basics of rectifier circuits 4 The standard rectifier for single-phase alternating current is the bridge rectifier, also known as a Graetz circuit, Graetz bridge or two-pulse bridge circuit. It is named after the German physicist Leo Graetz. The circuit is formed by four diodes: The alternating voltage on the left, which comes directly from a transformer, for example, is converted into a pulsating direct voltage (shown on the right). Since this is a full-wave rectification, the half-oscillations of the alternating voltage in the direct current circuit at the consumer R appear to have the same polarity. Without a smoothing capacitor, the effective value of the voltage remains approximately the same. In contrast to other types of rectifier, the blocking voltage of the rectifier diodes in this rectifier circuit only needs to be as high as the peak voltage of the alternating voltage. However, for safety reasons, it is chosen to be somewhat higher (for mains rectifiers on the 230-volt network, for example, over 400 V). The ripple has twice the frequency of the input voltage; halving the period reduces the subsequent filtering effort. Bridge rectifiers for alternating and three-phase current are often offered as diodes that are already interconnected in a common housing. Versions for higher currents contain a cooling surface and a hole for attachment to a heat sink. (Source: www.wikipedia.org, August 21, 2020) #AlexTbg #Electrical engineering #Rectifier 00:00 Introduction 00:15 Basics 00:40 How it works 03:01 Disadvantages 03:37 Conclusion ►►On this new channel you will find videos from the areas of mathematics, physics, technical mechanics and electrical engineering. I hope I can explain it to you well. If you like this channel, you are welcome to subscribe to it, which is also completely free and can be canceled at any time, so you can stay up to date with the new videos. Now I wish you lots of fun and above all motivation while learning... ►Support AlexTbg :) / alextbg @HTLSaalfelden ►► Subscribe: / @alextbg-simplelearning
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