{"product_id":"parametric-electronics-an-introduction-9783642679391","title":"Parametric Electronics: An Introduction","description":"\u003cp\u003e • Author(s): K. -H Löcherer\u003cbr\u003e • Publisher: Springer\u003cbr\u003e • Publisher Imprint: Springer\u003cbr\u003e • BISAC: Electronics - Circuits - General\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eIn this chapter, first the parametric principle is illustrated by two simple examples, one mechanical and one electrical. Then the realization of time- varying reactances is explained, followed by a short history of \"parametric electronics\". This survey demonstrates the importance of parametric circuits in the field of low-noise microwave electronics as well as explains the organization of this book. 1.1 The Parametric Principle An oscillating system comprising a single or several time-varying energy- storing elements is called a parametric system; usually the variations are harmonic functions of time. Everybody knows one example of a mechanical parametric system from his childhood, namely, a swing. Therefore, we will start with this example though as it turns out, a swing is a rather compli- cated parametric system. Fortunately, the electrical parametric systems, which form the object of this book, are simpler. Figure 1.1 shows such a swing. If it is removed from its equilibrium position and the child stands on it in a fixed attitude, the swing oscillates with a certain amplitude, the magnitude of which decreases with time due to the mechanical friction of the system. To increase the amplitude of oscil- lation, the child changes positions during swinging: it crouches and straightens in a certain way twice during one cycle of the swing.\u003c\/p\u003e","brand":"Springer","offers":[{"title":"Paperback","offer_id":45282814066839,"sku":"9783642679391","price":7267.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9783642679391.webp?v=1769303261","url":"https:\/\/atlanticbooks.com\/products\/parametric-electronics-an-introduction-9783642679391","provider":"Atlantic Books","version":"1.0","type":"link"}