Electronics homework

CHRIS_18

May 13, 2016
10
Joined
May 13, 2016
Messages
10
Hello.. I have been given this coursework guys ( I have uploaded it in the file below), and I don't really know how to start. The only data that I've been given is : μΑ 7909 and Io= 0,5A. Can anyone give me some directions!!!
 

Attachments

  • CW_Sheet_to_fill.pdf
    103.4 KB · Views: 102

Harald Kapp

Moderator
Moderator
Nov 17, 2011
14,271
Joined
Nov 17, 2011
Messages
14,271
Look up the datasheet of the ic. It will tell you how to use this regulator.
The questionaire refers to formulas 1...18, so you should have the relevant formulas somwhere in your course material.
Start filling in the form using this information and what can be derived from it.
We won't solve this assignment for you, but we'll be glad to help you along finding your own way.
 

CHRIS_18

May 13, 2016
10
Joined
May 13, 2016
Messages
10
Look up the datasheet of the ic. It will tell you how to use this regulator.
The questionaire refers to formulas 1...18, so you should have the relevant formulas somwhere in your course material.
Start filling in the form using this information and what can be derived from it.
We won't solve this assignment for you, but we'll be glad to help you along finding your own way.
Look up the datasheet of the ic. It will tell you how to use this regulator.
The questionaire refers to formulas 1...18, so you should have the relevant formulas somwhere in your course material.
Start filling in the form using this information and what can be derived from it.
We won't solve this assignment for you, but we'll be glad to help you along finding your own way.
Thanks for your answer guys. I have really moved forward with the coursework but I am stack now and I kinda need some help....So I have 2 diagrams ( uploaded below) and I need to fill the D and H brackets.... I know that A is 0.28.
 

Attachments

  • 13262472_1118636038177867_1272950217_o.jpg
    13262472_1118636038177867_1272950217_o.jpg
    101.7 KB · Views: 119
  • 13235065_1118636048177866_1900684223_o.jpg
    13235065_1118636048177866_1900684223_o.jpg
    120.2 KB · Views: 101
  • 13214936_1118636058177865_704959211_o.jpg
    13214936_1118636058177865_704959211_o.jpg
    137.2 KB · Views: 89

Harald Kapp

Moderator
Moderator
Nov 17, 2011
14,271
Joined
Nov 17, 2011
Messages
14,271
Figure 4 shows D=f(A), so pick your A and find D. You need to know whether you use a bridge rectifier or a half wave rectifier.
The same goes for H=f(A). For this you need to know m - unfortunately I have no idea where this value comes from or what the value of m is.
 

CHRIS_18

May 13, 2016
10
Joined
May 13, 2016
Messages
10
Figure 4 shows D=f(A), so pick your A and find D. You need to know whether you use a bridge rectifier or a half wave rectifier.
The same goes for H=f(A). For this you need to know m - unfortunately I have no idea where this value comes from or what the value of m is.
Ok , so I use bridge recifier I have calculated A= 0.28 and m= 2. Can u show me one of the two how is made so I can do the other one alone! Thank you in advance for any help of yours though!
 

Harald Kapp

Moderator
Moderator
Nov 17, 2011
14,271
Joined
Nov 17, 2011
Messages
14,271
Use the diagram D=f(A). Fin A=0.28 on the x-axis. move upward until you cross the dotted line (bridge connection). From teh intersection move left to the y-axis to find D.
This is basic knowledge how to read such a diagram, no magic involved.
 
Top