colour coded resistor and method to identify a colour coded resistor

-
👉 A colour coded resistor COLOUR CODED RESISTOR  is a type of carbon resistance . There are some coloured circular colour band on its body by which we identify its value in OHM 
This type of resistor is used in 
Different type of electronic circuits , amplifier etc
The process by which we can identify its value depends on code of different colours , its multiplier , and its tolerance value which  are given below    
  Name    number  multipler   T
1-Black             0             10^0    (+/- )
2-Brown           1             10^1
3-Red                2             10^2
4-Orange         3             10^3
5-Yellow          4             10^4
6-Green           5             10^5
7-Blue              6             10^6
8-Violet           7             10^7
9-Grey             8             10^8
10-White        9             10^9
11-Golden                                   5 %
12-Silver                                    10 %
13-No colour                             20%
                                                   
 Note:-Here " T " is tolerance value .

Now , how can we obtain the value of a resister by its colour
code .

Lets see an example -
Here is a image of colour coded resister


 What is its value in "ohm "
That is very simple 
Here , for first and second coloured band  we use only number code i.e  here 1st colour is GREEN and 2nd colour is RED so write code of green and red as number are 5 & 2 and third colour is Blue so its decimal multiplier is 10^6 (ten to the power 6) so the value of resistance is 52×10^6 ohm 4th stripe is golden colour and its tolerance is +/- 5 % so it may be 5% high or low , very simple .
So ,u can find very easily the value of a colour coded resistance .


If there is a question - The value of a colour  code resister is 430 ohm , what is the colour code of resister ?
Its answer is very easy here 1st and 2nd numbers are 4 and 3 so first two colours are yellow and orange and its multiplier is 10 or 10^1 so third colour is brown .
Now , you can easily find the value of a colour coded resister .
                
              Have a nice day !
  
follow me for more knowledge .

                                        thanks
                  
  


           
            


Comments

Post a Comment

Popular posts from this blog

Webfil , block proving axcle counter , UFSBI, BPAC details

-
Image
Heilights of webfil's  BPAC   Block proving by axle counter is a system used for controllingthe coordinated movement of the train in the block section working on absolute block working .The system has been developed as per IRS:105/2012 Ver.0 for signal line block working . System overview 1) Universal fail safe Block interface 2) Block panel 3) Signal section digital axle countet 4) Quad cable or voice channel on OFC 5) Battery set 6) Battery charger / ips module 7) Relay rack with relay 8) Block telefone NOTE - UFSBI AND RELAYS TO WORKS ON 24 V DC WITH MAXIMUM CURRENT CONSUPTION OF 5A Nomenclature of relays of ufsbi Image -1 image 2 image 3 Power supply and interconnection
Read more

Magnetic effect of electric current

-
Image
Due to passing of electric current through a conductor magnetic field generate around it this effect is called magnetic effect of current. Magnet a magnet is that substance which attracts ferromagnetic elements like iron Cobalt and nickel. When a bar magnet suspended freely from a thread its direction become North and South because Earth is also a huge magnet. Oersted experiment first of all in 1820 Christian oersted proved it by an experiment that when an electric current passing through a conductor it deflect compass needle perpendicular to the conductor  this experiment had proved that a current carrying conductor also produce magnetic field whose position is perpendicular to the the direction of flow of electric current. The force produced by magnetic field has both magnitude and direction and therefore it is a vector quantity and noted by B            Hans Christian oersted Magnetic field:  The area around a magnet where a magnetic force is experienced is called the magnetic field
Read more

What is a data logger? efftronics data logger in railway signalling

-
Image
A data logger is a electronic storage device which gives information. Here data means information and logger means electronic storage device. It is just like a black box in railway signalling. A data logger logs the information about the relays, which are connected to the data logger or remote terminal unit. Various analog supplies can also be connected to the data logger for monitoring the voltages. Image of a data logger unit The logged information by the data logger will be processed with the help of software in order to to empowered the monitoring system. the logged data are stored in the hard disk. this information can be viewed in the text format or Graphical format.This information is helpful to the user for knowing the working functionality of the signalling system and also analyzes the faults using different kinds of reports. The main usage of data logger   in railway is for preventive maintenance of various railway equipments and detecting the causes of faults. The da
Read more