Ppt presentation on source BEE engineering

ENGG BEE PPT

1. S o u r c e s Presented By: R.Lahari 22k81A1253 S.Sampath 22k81A1254 S.Sai Praneeth 22k81A1255 S.Shreyas Reddy 22k71A1256

2. C o n t e n t Voltage Source Ideal voltage source Dependent voltage source Current source Ideal current source Dependent current source

3. C i r c u it

4. Circuit elements Active elements Passive elements

5. Active elements Active circuit elements can deliver a non-zero average power indefinitely. There are four types of active circuit element, and all of them are termed an ideal source. They are: Independent voltage source Independent current source Dependent voltage source Dependent current source

6. Passive elements Passive circuit elements cannot deliver a non-zero average power indefinitely. Some passive elements are capable of storing energy, and therefore delivering power back into a circuit at some later time, but they cannot do so indefinitely. There are three types of passive circuit element. They are: Resistor Inductor Ca p a c i t o r

7. V o l t a g e s o u r ce A voltage source is a two-terminal device whose voltage at any instant of time is constant and is independent of the current drawn from it. Such a voltage source is called an Ideal Voltage Source and have zero internal resistance. Symbol-V Units-joules/coloumb and volts Formula-V=work done/charge

8. Ideal voltage source By definition, an ideal voltage source is a two- terminal element with the property that the voltage across the terminals is specified at every instant in time. This voltage does not depend on the current through the source. That is, any current in any direction could possibly flow through the source

9. Ideal voltage source

10. Dependent voltage source In the theory of electrical networks, a dependent source is a voltage or current whose value depends on a or current somewhere else in the network Dependendent source are classified into: VCVS V CC V CCVS CCC S

11. Current source A current source is the dual of a voltage source. The term current sink is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source driving a resistive load. There are two types. An independent current source (or sink) delivers a constant current Symbol - I Units-ampere Formula- I=V/R

12. Ideal current source

13. Ideal current source: this source has infinite internal resistance and it delivers the energy at a specified current which is dependent of the voltage across the source (I=Is). Practical current source: it has finite internal resistance and it delivers the energy at a specified current which is dependent on the voltage across the source. “when we increase voltage, current gets decreased”. Independent source: the element for which both voltage and current don’t depend on the voltage or current elsewhere in the circuit. Dependent source: The elementfor which either the voltage or current depends on the voltage or current elsewhere in the circuit.

14. Dependent current source

15. Thank you For your attention