I love food with healthy and simple ingredients. I am a recipe developer and food blogger who is inspired by many cultures around the world. Today, I could be in Thailand having a Tom Yum Soup, and tomorrow I will be in France eating bouillabaisse!
Rogue Foodies is for everyone who loves to travel through the food they eat without borders, labels, or travel restrictions!
Become a member to get new recipes in your email every week
First, valley switching reduces the energy stored on the input source by changing the switching waveform from a form that exhibits a steep rise and fall to one with a long duration plateau, called a valley, that at least partially absorbs the available energy. This is in contrast to a form that exhibits sharp transitions from everywhere to nowhere or a sinusoidal waveform. Second, valley switching reduces RFI emissions. This is because the valley in the switching waveform doesn't excite the power distribution network in the same way that sharp leading and trailing edges from the sinusoidal switching waveform do. The simplest type of quasi-resonant switching is simply a fixed-frequency switching waveform that has a valley-like portion that is repeated periodically, commonly called sawtooth quasi-resonant switching. However, sawtooth switching is rarely used in practical circuits because the fixed-frequency requirement limits the minimum load current that the circuit is able to drive and also because power factors in non-inductive loads are much higher than 1.0 for many applications, which makes the fixed-frequency requirement difficult to meet. In addition, it may be difficult to find a circuit component that can operate at kHz frequencies, especially in microcomputers and mobile wireless devices. d2c66b5586