It is a Two-terminal electrical/electronic component that has the nature of the Resistance. A Resistor is a purely electronic/electrical resistive component that opposes the flow of electrons. The measure of voltage across the resistor’s terminals is called a “voltage drop” across the resistor. Voltage drop is proportional to the resistance value, If there is any change in resistance value then the voltage drop also changes
 |
| RESISTOR |
V = IR (Ohm’s Law)
I=V/R
Resistor values: 10kΩ, 100Ω, 1 MΩ Power Resistors
- Type: Carbon Film Leaded resistor
- The most economic industrial investment
- Standard tolerance: +/-5%
- Excellent long term stability
- Termination: Standard solder-plated copper lead
- Type: Carbon Film Leaded resistor
- The most economic industrial investment
- Standard tolerance: +/-5%
- Excellent long term stability
- Termination: Standard solder-plated copper lead
Resistance Calculation:
Resistor Color Code: Resistor color code
Resistor watts: 1/4 watt, 1/2 watt,1 watt, 2-watt Resistors.The selection of the resistor depends on how much current flow in your design, If more current
will flow in your design high wattage resistor is required
NOTE: Resistors are available as the same wattage with a different type of resistance values.
How to check the resistance using
Multimeter
Set the Multimeter red wire is connect at voltage position
and Black wire is connected at the Ground (GND) of a multimeter. Now Consider your
resistance value will be 10kΩ, place the
multimeter knob at the range of 10kΩ in a multimeter and connect a multimeter
probes led pins to terminals of the resistor, then multimeter shows the
resistance value in the display may be if it showed ‘1’ number
it means that resistance is out of the range, you need to change the resistance
range in the multimeter.
Note: Resistor has no polarities you can connect in any terminals.
Series and
parallel Resistance:
Series Resistance:- In a series connection total
resistance will be the sum of all resistors
- We observe unique current flow in
series connection
rrResistor Series connection
- The voltage will be divide across
each resistor – Total voltage drop equal to the sum
of the voltage drop across individual resistors
The selection of the resistor depends on how much current flow in your design, If more current will flow in your design high wattage resistor is required
- In a series connection total resistance will be the sum of all resistors
- We observe unique current flow in series connection
- The voltage will be divide across each resistor – Total voltage drop equal to the sum of the voltage drop across individual resistors
| rr |
| Resistor Series connection |
Resistor-Series connection: Voltage vs Current
- In parallel connection total resistance will be reduced
- We observe the same voltage drop-in
each Resistor
- Current will be divide across each resistor – Total current is equal to sum of current flow across each resistor
 |
Basic
types of Resistors
- Fixed Resistors
- Variable resistors
Fixed
Resistors:
The value of Resistor is not changed or we can say
that the resistance can not be influenced by any parameter (example: heat
light, intensity), and also we are not able to change the resistance value
manual.
- These are again classified into different types such
as
- Carbon composition
- Film carbon type
- Carbon film type
- Metal film resistor
- Metal oxide film resistor
- Wire wound resistor
- Surface mount resistor
Variable
Resistors
The
resistance of the Resistor changes by manual or automatic. We can change the
resistance value from minimum to maximum value, this way we can change and
fix at a particular position.
For example, we have a 100k variable resistor, we can
change it from 0Ω - 100KΩ and fix it at
any resistance value (ex:20kΩ).
- Preset
- Potentiometer (Pot)
- Trim-pot
Other
types of Resistors
Sensors
All sensors have the resistance property, so we can
say that sensors are one of the parts of the variable resistors.
Examples:
- Thermister (NTC, PTC)
- Light dependant Resistor
- Digital potentiometer
Power
resistorsPower resistors are designed to withstand a large
amount of power and dissipate a large amount of power. Power resistors are mostly
used in industries, power plants, or any application that can handle the high
power ratings. Power resistors are made from a material that has high thermal, conductivity
that allows efficient cooling with heat sink elements.
· Wire wound
resistors
·
Grid resistor
Applications
of power resistor
- Engine braking
- Load bank
- Neutral
grounding resistor
H How
to select the ResisterFi First, you have to study about your requirement
R Resistors
selection Factors
- Resistance
- Power dissipation
- Wattage(Voltage and current)
- Thermal range
Applications
- In any circuit design, we are using resistors
-
electronics products design
- Electrical products design
- Design of Industry applications
DATASHEET
Other Articles
- Fixed Resistors
- Variable resistors
Fixed
Resistors:
The value of Resistor is not changed or we can say
that the resistance can not be influenced by any parameter (example: heat
light, intensity), and also we are not able to change the resistance value
manual.
- These are again classified into different types such as
- Carbon composition
- Film carbon type
- Carbon film type
- Metal film resistor
- Metal oxide film resistor
- Wire wound resistor
- Surface mount resistor
Variable Resistors
The
resistance of the Resistor changes by manual or automatic. We can change the
resistance value from minimum to maximum value, this way we can change and
fix at a particular position.
For example, we have a 100k variable resistor, we can
change it from 0Ω - 100KΩ and fix it at
any resistance value (ex:20kΩ).
- Preset
- Potentiometer (Pot)
- Trim-pot
Other types of Resistors
Sensors
All sensors have the resistance property, so we can
say that sensors are one of the parts of the variable resistors.
Examples:
- Thermister (NTC, PTC)
- Light dependant Resistor
- Digital potentiometer
Power resistors are designed to withstand a large amount of power and dissipate a large amount of power. Power resistors are mostly used in industries, power plants, or any application that can handle the high power ratings. Power resistors are made from a material that has high thermal, conductivity that allows efficient cooling with heat sink elements.
· Wire wound resistors
· Grid resistor
Applications of power resistor
- Engine braking
- Load bank
- Neutral grounding resistor
Fi First, you have to study about your requirement
R Resistors selection Factors
- Resistance
- Power dissipation
- Wattage(Voltage and current)
- Thermal range
- In any circuit design, we are using resistors
- electronics products design
- Electrical products design
- Design of Industry applications
DATASHEET
2 Comments
Reminded me of how fluke 117 electricians true rms multimeter saved me in testing a circuit full of resistors.
ReplyDeletethank you @ ZAB
ReplyDelete