All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > General Electronics Chat

Notices

General Electronics Chat Discussion forum for general chat about anything electronics related, including asking questions about material in the All About Circuits E-book, Worksheets, and Videos.

Reply   Post New Thread
 
Thread Tools Display Modes
  #1  
Old 08-02-2011, 06:09 PM
Xufyan Xufyan is offline
Senior Member
 
Join Date: Aug 2010
Posts: 114
Default how to learn electronic circuit design

Sometime i wonder what the hell resistor is doing in this circuit, sometimes i just confused seeing the internal circuitary of simple lamp or any other simple household items that can be build using a single switch and a battery then what the hell transistors and capacitors are doing there ?? i am just curious to learn circuit designing

is there any book that teach us how to create your own circuits or simply circuit designing ?

i am doing telecom engineering and we have so many eletronics subjects like Opamps and Osciallator, Electric Circuits, Electronic devices etc... but our teacher says since you're going to be a telecom engineering you'll not be taught circuit design

without circuit designing these subjects are useless to learn,
Reply With Quote
  #2  
Old 08-02-2011, 06:52 PM
ErnieM's Avatar
ErnieM ErnieM is offline
Senior Member
 
Join Date: Apr 2011
Location: Lon Guyland, Noo Yawk
Posts: 4,723
Default

Consider an artist verses someone who can "paint by numbers." The latter person is just doing rote fill in work, but if they keep at it then it may click way down deep how colors interact, how the impression of shapes and shading can play together, and the "why" that cannot be taught may spring to life and they begin to paint outside the lines and create new fresh art.

Engineering can be broken down into analysis and synthesis. In analysis one learns how things work, how to calculate what a given device or circuit may do.

Synthesis is very different as it starts with a desire and a blank piece of paper. One may know of certain established building blocks to do some functions but eventually something brand new must be created. How that new thing comes about I cannot tell you, for me it comes fourth whole from some silent part of my brain, as if that muse was not part of me.

My muse does need to be fed, a constant stream of facts and details that are left to silently peculate and arise unbidden with some new design. It cannot be forced.

Analysis can be taught, and it is analysis that feeds the muse.

Synthesis cannot be taught.

Learn whatever your teacher can teach you, it is not a futile effort.

Quote:
Originally Posted by William Blake
"If a fool would but persist in his folly, he would become wise."
__________________
“Freedom is never more than one generation away from extinction. We didn’t pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children’s children what it was once like in the United States where men were free.”
Reply With Quote
  #3  
Old 08-02-2011, 09:17 PM
Bill_Marsden's Avatar
Bill_Marsden Bill_Marsden is offline
Super Moderator
 
Join Date: Mar 2008
Location: Dallas, TX (GMT-5 w/ DST)
Posts: 18,802
Blog Entries: 5
Default

Cookbooks are good ways to learn how other people solved problems, which is why I like them so much. After a while, you can use the alternate solutions in your projects.

You hear people talk about "thinking outside the box". Many times this is code that they want to do something that isn't possible, but what it should mean is looking for ways to solve a problem that is not immediately obvious.

For example, suppose you need a flasher where the battery life is a major issue. Do you really need alternate LEDs on all the time, or if they alternated and were on for a fraction of the time solve the battery life issue?
__________________
..
"Good enough is enemy of the best." An old engineering saying, Author unknown.

General info:
If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input. Thanks for the verbage Wookie.
Reply With Quote
  #4  
Old 08-02-2011, 10:28 PM
Adjuster's Avatar
Adjuster Adjuster is offline
Senior Member
 
Join Date: Dec 2010
Location: London UK (GMT)
Posts: 2,147
Default

Simple electrical appliances like electric lamps can be made without electronic gadgetry, as they were in the past. More sophisticated devices, like a lamp that lights when you touch it, or when the room gets dark, need more complex circuits. There is a value judgement as to whether the added cost, complexity, and potential unreliability is worthwhile.

Your best course for now may be to do your best to learn the things that your teacher is willing to teach you, and think about more advanced things only once you have a better grasp of the basics.
Reply With Quote
  #5  
Old 08-02-2011, 10:50 PM
Sparky49's Avatar
Sparky49 Sparky49 is offline
Senior Member
 
Join Date: Jul 2011
Location: Cambridgeshire
Posts: 717
Blog Entries: 9
Default

You might be surprised at what you can design - you just have to have a 'problem' to utilise your knowledge. Even with some basic knowledge you can do some pretty cool things. A lot can be done with some transistors, op amps and logic gates.

When designing a circuit, think about what you want it to achieve. Then how do you think the circuit will do this? Start simple. What power source will you be using? A 9V battery? Sketch it down.

Then what? A status led? Draw that down, but remember it needs a resistor to 'protect' it. Does the circuit need to count for a certain amount of time after some sort of trigger? If so, think what you can use. Perhaps a 555 timer in monostable. Draw all that out.

See how by taking little steps you can create your own circuit? It may not be a super-dooper all-singing all-dancing circuit with a hundred ICs and crystals and bluetooth and all that stuff, but it's a circuit that you have made.

I say, get a real grasp of the basic concepts, and then tweak them, join them, do whatever to create your own circuit. Good luck!
Reply With Quote
  #6  
Old 08-03-2011, 01:30 PM
Crispin Crispin is offline
Member
 
Join Date: Jul 2011
Posts: 82
Default

Quote:
Originally Posted by Sparky49 View Post
...you just have to have a 'problem' to utilise your knowledge. ...
Nail on the head I think.

I used to tinker, read endless books, studied electronics at school (some 20 years ago) but never really did anything great.

My current solar project is a problem that needs a solution. I am having great fun designing and building it with knowledge I knew way back when (an lots of new stuff)

Once you have a real problem / project you need a solution for, that is when you can be creative and use the seemingly disconnected ramblings your teacher is teaching you.
Reply With Quote
The Following User Says Thank You to Crispin For This Useful Post:
Sparky49 (08-03-2011)
  #7  
Old 08-04-2011, 04:26 AM
EclecticElectric's Avatar
EclecticElectric EclecticElectric is offline
New Member
 
Join Date: Aug 2011
Posts: 1
Default

I absolutely agree with the above posts, there is a completely different perspective when you are trying to achieve something specific. Asking yourself the question "what goes into an electric circuit" can lead to endless possibilities and make it seem overwhelming. However, if you ask yourself "what goes into the circuity of a lamp" (using the example from above), it narrows it down quite a bit.

Best of luck!
Reply With Quote
Reply   Post New Thread

Tags
, , ,


Related Site Pages
Section Title
Worksheet Optoelectronic devices
Worksheet Electromechanical relay logic
Worksheet Thyristor application circuits
Worksheet Bipolar junction transistors as switches
Worksheet Time constant circuits
Worksheet Series-parallel DC circuits
Worksheet Current divider circuits
Worksheet Parallel DC circuits
Worksheet Series DC circuits
Textbook Conventional versus electron flow : Basic Concepts Of Electricity


Similar Threads
Thread Thread Starter Forum Replies Last Post
Circuit Design with 0.75V voltage reference 466576266 The Projects Forum 13 04-15-2010 07:53 AM
simple BJT audio amp experiment (need help) count_volta General Electronics Chat 216 11-16-2009 08:08 PM
Logic circuit design erasm Homework Help 2 08-22-2009 01:10 PM
Design questions on LED circuit w/ quadrature oscillator MikeL The Projects Forum 6 08-19-2008 12:07 PM
Help in snubber circuit design for a H-bridge chrislee84 The Projects Forum 6 03-29-2008 08:18 PM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:25 AM.


User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.