Monday, February 24, 2020

Li-ion battery multi-stage charger with power factor correction for Essay

Li-ion battery multi-stage charger with power factor correction for mobile phone - Essay Example ase of implementing the circuit into hardware would be reduced; thus, enabling the introduction of a multiprocessor to control the battery’s charging process (Liu, 2013.p.108-112). By adopting this multi-stage charger, it would be largely expected that appropriate rectifications would be made to the current designs of Li-ion batteries in a manner that would enable users attain total satisfaction from their use. The proposed multi-stage charger would use a diode in the smoothening of the transition between two high-gain linear feedback loops. This would enable it to control the single power device; hence, enable automatic charging of the battery under constant current and voltage (Andreini & Murari, 2002.p.335-341). The main components that would be required for the enhancement of this project for a single isolated configuration of the system would include micro-controllers, temperature regulators and sensors, lead acid and LCD batteries, resistors, ADC and an op amps integrator for the circuits. However, to be able to achieve the goals or this project as far as the acquisition of the gadgets or above noted items and the project’s cost, an approximate total amount of $200 would be required to cater for the budgetary allocations on the same. I hope that this project and related concepts will be concluded by the close of this present semester. In the contemporary world of these days where the use of electronic gadgets is at a higher rate, the main concern of consumers is on the durability of the battery cells that they apply to their devices whether mobile phones, laptops, iPods, among many other such devices. For a long time, the manufacturers of such gadgets have engaged the use of Lithium-ion batteries in the provision of a much needed energy to power the devices. The main concern for the choice of usage for the Li-ion batteries is the accuracy, compactness and power efficiency of the battery’s charger circuits. In order to build up a power factor

Saturday, February 8, 2020

Policy proposal Essay Example | Topics and Well Written Essays - 1000 words - 1

Policy proposal - Essay Example As such, in order to proactively meet this challenge, it is the responsibility of the respective police department to not only retain a zero tolerance policy as has been exhibited in the University of Arizona’s police manual/handbook, but also to actively engage key shareholders within the university to work to educate and inform based on the unique threat that such incidents place on everyone involved in the university environment. It is therefore the recommendation of this brief analysis that the University of Arizona’s Police Department should engage in actively raising awareness among both faculty and staff with regards to the threats that exist as well as what efforts can be made on behalf of the community to reduce the threats that exist as a function of weapons safety and violation. It goes without saying that our current era has seen a drastically increased incidence of gun related university incidents. From the horrors of what happened at the Virginia Tech, the University of Alabama professor who shot and killed three of his colleagues during a faculty meeting, the Northern Illinois University incident involving the shooting death of 5 graduate students, and our very own University of Arizona School of Nursing incident in which 3 professors plus the gunman was killed. All of these incidents have taken place within the past 15 years and represent a vast increase in the number and severity of mass murder perpetrated within the university environment. Accordingly, a zero tolerance policy alone is not sufficient to provide deterrence to such acts of horror. Although it is incumbent upon other entities within the university setting to broach this topic with students via orientation programs and introductions to university etc., it is also incumbent upon the University Police Department to become closely involved with the student and faculty in eliciting their support and help with minimizing threats that are faced by all as a