Building Circuits

Electronic engineers test their circuits on breadboard. 

 
 

 

 

 

 

 


 
 

When we have got our circuit working, we can solder it onto strip board.  It is helpful to draw out the circuit on a strip board planner.

Be careful with soldering:

·        Heat both the wire and the board sufficiently so that the solder runs in.

·        Be careful not to overheat the component.  Some components are easily damaged.  Use a crocodile clip as a heatsink if necessary.

·        Do not apply too much solder, otherwise you could bridge the tracks.

 


 

For more help with soldering, go to

http://www.ee.upenn.edu/rca/funstuff/soldering/soldering2.html

 

Once we have found that the circuit works properly, we can design a printed circuit board (PCB), especially if we are going to construct several copies of the board. 


 

Now try Question 9.  

Click here for a presentation.

 

Summary

  • A perfect voltmeter has an infinite resistance so takes no current.
  • A perfect ammeter has zero resistance. 
               
Voltmeters                   
Measure voltage
Are wired in parallel
Ammeters                                                  
Measure current.              
Ammeters are wired in series                     
Ohm-meters
Measure resistance
Need a battery

Multimeters

  • Can be analogue or digital.
  • Measure voltage, current, and resistance.
  • Digital multimeters have functions with which they can test capacitors, diodes, and transistors. 

CRO

·        Displays waveforms.

·        Needs calculations to read voltage and time period.

Circuit Boards

·        Electronic engineers test their circuits on breadboard.

·        Then they use stripboard.

·        PCB’s are used to mount mass produced circuits.

 

Now try the Topic Quiz.

 

Useful Website

http://www.electronics2000.co.uk/

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