Best phone deals on Flipkart and Amazon festival sale: iPhone XR, Redmi 7A, Galaxy M30s and more

!DOCTYPE html PUBLIC “-//W3C//DTD XHTML+RDFa 1.0//EN” “http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd”> E-commerce giants Amazon and Flipkart are hosting a promotional festival sale (September 29-October 4) in India. They are offering lucrative deals on mobiles, smart TVs, home and kitchen appliances and several more product categories. Popular phones such as Apple iPhone XR, Redmi Note 7, OnePlus 7 and  Samsung Galaxy S9 series, among others are being offered at lowest prices in India. The base model (64GB) is available for Rs 44,999 against launch price Rs 76,900. Amazon is offering up to Rs 13,000 via exchange deal and also there are other financial incentives including 10% instant cashback for consumers buying through with SBI card. Key features: 6.1-inch Liquid Retina display with custom sturdy glass shield and airplane-grade aluminium shell with IP67 rating 7nm class Apple A12 Bionic, which is said to be one of the fastest and powerful chipsets in a mobile. It is backed by Apple iOS 13 with advanced security features to protect user privacy online State-of-the-art Face ID is a gold standard for mobile in terms of facial recognition technology f...

Choosing the Right Switch: Know Your AC from Your DC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726. Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1. This is why it’s so important for designers and engineers to understand how to pick the right switch for their product. 1. The ratings on this switch illustrate the significant differences between ac and dc voltage ratings, for the same current rating. While there’s an enormous variety of switches available, they mostly all do the same thing: Turn power to an electrical circuit on or off by making or breaking an electrical connection. But it’s how they do it that’s important. How quickly the circuit needs to be broken depends on whether you’re working with ac or dc. With dc, you’ve got a steady current in one direction, whereas with ac, both the magnitude and direction of the current change. Imagine you have two circuits, each carrying the same current—one is an ac circuit and ...