used to LIMIT THE FLOW OF CURRENT or provide a voltage drop in a circuit.

what CLASSIFICATION OF RESISTOR is this?

CLASSIFICATION OF RESISTOR

3 FIXED Resistor

CHEAPEST WIDERANGE of VALUES NON REACTIVE LIMITED WATTAGE RATING RESISTANCE VALUE CHANGES WITH TEMPERATURE RESISTANCE VALUE IS AFFECTED BY AGING

HIGH WATTAGE RATING ACCURATE AND STABLE RESISTANCE REACTIVE LIMITED RANGE OF VALUES LOW RESISTANCE VALUES

WIDE RANGE OF VALUES NON REACTIVE TIGHTER TOLERANCE LESS SENSITIVE TO TEMPERATURE AND AGING LESS NOISE LOW WATTAGE RATING

-HAS 3 CONNECTIONS, 2 FIXED AND ONE VARIABLE -WIDE RANGE OF VALUES BUT LIMITED CURRENT HANDLING CAPABILITIES -ALWAYS CONNECTED AS VOLTAGE DIVIDER

- 2 CONNECTIONS, 1 FIXED, 1 VARIABLE - HAVE LIMITED RANGE OF VALUES AND HIGH CURRENT HANDLING CAPABILITIES - USED IN CONTROLLING THE LOAD CURRENT

a device that STORES ELECTRICAL ENERGY in an electrostatic field

consist of TWO CONDUCTING PLATES called ELECTRODES and seperated by a layer of an insulating material medium called DIELECTRIC

the electrical size of a capacitor the measure of how much electric energy stored in an electrostatic field abiity of a device to oppose a change in voltage unit is FARAD (F)

also called a COIL, CHOKE, or REACTOR, is a passive TWO TERMINAL electrical component that STORES ENERGY in a MAGNETIC FIELD when electric current flows through it

ENUMERATE

ENUMERATE

TYPES OF COILS

- used mostly on RF EQUIPMENTS - HIGH CURRENT- CARRYING capacity - MORE EFFICIENT compare to ferromagnetic core coil

- HIGHER INDUCTANCE VALUE compared to air core coils - prone to SATURATION AND LOSSES

the characteristic of an electrical circuit that OPPOSES THE CHANGE IN VALUE OF CURRENT unit is HENRY

states that the current flowing in an electrical circuit is DIRECTLY PROPORTIONAL TO THE APPLIED VOLTAGE AND INVERSELY PROPORTIONAL TO THE EQUIVALENT RESISTANCE

rate at which ELECTRICAL ENERGY is used or consumed

CONVERSION OF UNITS:

a TEMPORARY PHENOMENON occurring in a network prior to reaching a STEADY STATE CONDITION

transient period is the period required for the current and voltages to ADJUST THEMSELVES TO STEADY STATE after its SWITCHED ON

DC STEADY STATE OF RESISTOR CAPACITOR AND INDUCTOR

is the TIME REQUIRED to charge to 63.2% or to discharged to 36.8% of the MINIMUM VALUE

also called LAWS OF ELECTRICAL NETWORK

this law states that the ALGEBRAIC SUM OF CURRENTS entering and leaving any node or junction in an electric circuit is equal to ZERO

this law states that the ALGEBRAIC SUM OF VOLTAGE source and voltage drops in any path or loop circuit is equal to zero

5 Time constant

Node voltages should be the independent variables in developing equations from the circuit

in a network with two or more sources, the current or voltage for any component is the algebraic sum of the effects produced by each source acting seperately

an entire network connected to the load can be replaced by a single voltage source Vth in series with a single resistance Rth connected to the same terminal

an entire network connected to the load can be replaced by a single current source In in parallel with a single resistance Rn connected to the same terminal

convert voltage source to current source connected with resistor

Parallel Generator theorem used to compute the common voltage when different voltage sources with resistance are connected in parallel

to be able to transfer maximum power to the load from the source, the load resistance must be equal to the internal resistance of the source

measure of the amount of mutual inductance exist between two magnetically coupled coils