RESISTOR
What is Resistor?
Ø Resistor is One of the Electronic's Main Components
and the Resistor is Called a Passive Components.
Ø The Work of this resistor is to
Limit the Currents Flow in the Circuits.
Ø For Example, take one Tupping and
Pass the High Flow Rate Water into the Tupping and have to be Control the Flow
of water so What we will to there to control the Flow can be Connect the Valve
to control the Flow of Water Similar in Electronics Circuits There is a High Current
in the Path To control the Current We can Use the Resistor.
Ø Instead of valve we are using here
Resistor.
Ø To choose the Resistor we must be
known About OHM Law as well as know about Current and voltage in the circuits
Ø The Resistance is measured in OHMS.
What the
resistor will do in a Circuits?
Ø The Resistor can work like a potential
divider.
Ø The Resistor can work like a Biasing
Resistor.
Ø The Resistor can work like a Op Amp-Feedback.
Ø The Resistor can work like a Current
Limiting
Ø The Resistor can work like a Impedance
Matching
Ø The Resistor can work like a Current
Measuring
Ø The Resistor can work like a Data and
Address pullups.
What is Potential
Divider?
Ø The Potential Divider two or more
resistor is connected in a series from that we can take a multiples voltage that
is called as a Potential Divider.
Ø If the resistor is connected in a
Parallel then there is a current Divider
What is
Biasing Resistor?
Ø The Biasing Resistor is Transistor
and many other devices need to have AC and DC operating characteristics and
gain values set up for correct operation. This is Done with multiple resistors
and is often called biasing.
What is Op
Amp – Feed back?
Ø Most op-amp circuits need to have their gain and
feedback functionality set by resistors external to the amplifier chip;
resistors are the primary means of doing this
What is Current
Limit?
Ø Resistors can be used to limit the
amount of current that flows in a circuit element. This is a useful safety
function in many circuits limiting the current that can flow into an LED to
manage its brightness
What is Impedance
Matching?
Ø To maximize power transmission at
high frequencies the impedance of the receive and transmit ends of a circuit
need to be the same. Resistors can perform at least part of this requirement
What is
current measuring?
Ø Many circuits need to know how much
current is flowing, however, it is much easier to measure voltage, so inserting
a resistor into the circuit to ‘develop’ a voltage – remember Ohm's law- is a
common technique for measuring current
What is Data
and Address pullup?
Ø This functionality helps to reduce
noise issues on high-speed computer busses. When a data bus tri-states or is
driven high, it is often necessary to pull it into a known state or to make
sure its output high is well above the switching point of other logic elements
on the bus, and a pull up helps to do this
Type of Resistor?
Ø Fixed Value Resistors
Ø Variable
Resistors
Ø Resistor Networks
What is Resistive
Materials?
Ø Carbon Film
Resistors
Ø Metal Film
Resistors
Ø Wirewound
Resistors
Ø Metal Oxide
Resistors
Ø Metal Strip
Resistors
What is Resistor
Specifications?
Ø Temperature
Coefficient
Ø Resistor Ageing
or Stability
Ø Thermal
Resistance
Ø Thermal and Power
Rating
Ø Resistor Noise
Ø High-Frequency
Behaviour
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