A modular IGBT converter system for high frequency induction by Zied H.A.

By Zied H.A.

Show description

Read Online or Download A modular IGBT converter system for high frequency induction heating applications PDF

Best electronics: radio books

103 projects with light-emitting diodes

Electroluminescent semiconductor units are assuming an excellent value in digital global. There at the moment are many units on the topic of this relatives. The electroluminescent panels, laser diode, infra crimson diode, mild emitting diode (LED) and LED screens are many of the very important contributors of this family members. The electroluminescence is a phenomenon happening whilst a semiconductor fabric emits mild lower than the effect of electrical box.

Extra info for A modular IGBT converter system for high frequency induction heating applications

Example text

In a well-corrected lens, the aberrations are balanced so that the exact rays come to the image points defined by the paraxial rays, not the other way around. Two basic types of data are used to describe optical systems. The first are the general data that are used to describe the system as a whole, and the other are the surface data that describe the individual surfaces and their locations. 4 DESIGN beginning with an object surface and ending with an image surface (where there may or may not be an actual image).

The term “first-order” means the paraxial image properties: the size of the image, its orientations, its location, and the illumination or brightness of the image. This also implies apertures, f-numbers, fields of view, physical size limitations, and the like. It does not ordinarily include considerations of aberration correction; these are usually third- and higher-order matters, not first-order. However, ordinary chromatic aberration and secondary spectrum are first-order aberrations. Additionally, the first-order layout can have an effect on the Petzval curvature of field, the cost of the optics, the sensitivity to misalignment, and the defocusing effects of temperature changes.

The cost of an optical element will vary with its diameter (or perhaps the square of the diameter) and also with the product of the diameter and the power. Thus, while first-order layout deals only with components, these relationships still apply reasonably well even when applied to components rather than elements. Minimizing the component powers does tend to reduce the cost on these grounds (and also because it tends to reduce the complexity of the components). 13 IS IT A REASONABLE LAYOUT? A simple way to get a feel for the reasonableness of a layout is to make a rough scale drawing showing each component as single element.

Download PDF sample

Rated 4.46 of 5 – based on 20 votes