For the circuit shown below;

• Write a KCL equation for Node A, Node B, Node C and Node D.
• Write a KVL equation for Loop 1, Loop 2 and Loop 3.

 

A simple circuit to charge a 12V battery is shown below. A fixed DC voltage source is set to the required maximum charging voltage, usually 14.5V. The resistor R1 is used to limit the initial charging current when the battery is discharged.

(i)  Design a battery charger circuit to charge a 12V battery from a 14.5V fixed DC voltage source. The charger should have two maximum current settings selected by a 2 position switch. The high setting should provide a maximum charge current of 1A and the low setting should provide a maximum current of 300mA. Assume a fully discharged 12V battery has a voltage of 10.8V across its terminals. Include a voltmeter and ammeter in your circuit design to allow the battery voltage and current to be monitored while charging. Draw the schematic of the battery charger showing all component values.
 
(ii) For each current setting redraw the circuit showing all voltages and currents when charging a fully discharged battery. Calculate the power dissipated in the resistor, the power delivered to the battery and the power provided by the DC voltage source. How efficient is the battery charger for each setting. 
 
Resistors only come in a limited range of 'preferred' values so it is not often possible to buy the value you want "off the shelf". Assume you have the resistors shown in table one available.

(i)  Suggest, showing all calculations, how you could build the circuit using only these available resistors.

(ii) Using these new resistor values recalculate the maximum charge current for each setting.

Posted Date: 2/28/2013 4:16:24 AM | Location : United States

Ask an Expert

Related Discussions:- Calculate the maximum charge current, Assignment Help, Ask Question on Calculate the maximum charge current, Get Answer, Expert's Help, Calculate the maximum charge current Discussions

Write discussion on Calculate the maximum charge current
Your posts are moderated

Write your message here..

Related Questions

Philosophy, what is the aim of statistics? what is the aim of statistics?

Time series, Year Production 2006 8 2007 6 2008 10 2009 12 2010 11 2011 15 ... Year Production 2006 8 2007 6 2008 10 2009 12 2010 11 2011 15 2012 14 2013 16 Determine the trend from data given above?

Redundancy analysis, In reduced rank regression (RRR), the dependent var... In reduced rank regression (RRR), the dependent variables are first submitted to a PCA and the scores of the units are then used as dependent variables in a series of

Introduction to probability, Introduction to Probability A ... Introduction to Probability A student is considering whether she should enroll in an MBA educational program offered by a well-known college. Among othe

Optimal number of cluster, Try different numbers of clusters in your progra... Try different numbers of clusters in your program (K=2...15) and build a plot that shows the dependency between number K and value of RSS function on the last iteration. What is th

Skewness, Skewness Meaning and Definition  Literal meaning of skew... Skewness Meaning and Definition  Literal meaning of skewness is lack of symmetry; it is a numerical measure which reveals asymmetry of a statistical series. According t

Probability, 2.1 Modern hotels and certain establishments make use of an el... 2.1 Modern hotels and certain establishments make use of an electronic door lock system. To open a door an electronic card is inserted into a slot. A green light indicates that the

Muti linear regression model problem, Muti linear regression model problem ... Muti linear regression model problem An investigator is studying the relationship between weight (in pounds) and height (in inches) using data from a sample of 126 high school

Vector of a company, Suppose both the Repair record 1978 and Company headqu... Suppose both the Repair record 1978 and Company headquarters are believed to be significant in explaining the vector (Price, Mileage, Weight). Here, because of the limited sample s

Collaboration policy,  Each question, by default, should be solved INDIVID...  Each question, by default, should be solved INDIVIDUALLY, unless marked as \collaborative". Questions marked as \collaborative" implies that for those questions you are encourage