Choppers. 7.1. INTRODUCTION. Many industrial applications require a variable- voltage dc source, therefore, it is necessary to be able to convert a fixed ... Thus, a chopper can be considered as the dc equivalent of an ac transformer and can be used to step-up or step-down the dc input voltage. ... first dc is converted to ac and then ac to dc, this technique is therefore costly, bulky, and less efficient.
|Title||:||Power Electronics and Its Applications|
|Publisher||:||Penram International Publishing (India) Pvt. Ltd. - 2004|