its all about basic electronics

1. #PRESENTATION
#162-19-1902

2. An electric circuit is a path in which
electrons from a voltage or current
source flow. The point where those
electrons enter an electrical circuit is
called the "source" of electrons

3. # The main parts of an ideal electric circuit are :
• Electrical Sources (for delivering electricity to the
circuit and these are mainly electric generators and
batteries)
• Controlling Devices (for controlling electricity and
these are mainly switches, circuit breakers, MCBs,
and Potentiometer like devices etc.)
• Protection Devices (for protecting the circuit from
abnormal conditions and these are mainly Electric
fuses, MCBs, Switchgear systems).

4. • Conducting Path (to carry current one point to
other in the circuit and these are mainly wires or
conductors)
• Load
Thus Voltage and Current are the two basic features
of an Electric Element. Various techniques by which
voltage and current across any element in any electric
circuit are determined is called Electric Circuit
Analysis.

5. • In this figure shows a simple Electric Circuit
Containing A battery of 30 V
• A carbon resistor of 5kΩ

6. # Basic Properties of Electric Circuits
• A circuit is always a closed path. A circuit always
contain an energy source which acts as source of
electrons.
• The electric elements include uncontrolled and
controlled source of energy, resistors, capacitors,
inductors, etc.
• In an electric circuit flow of electrons takes place
from negative terminal to positive terminal.
• Direction of flow of conventional current is from
positive to negative terminal.
• Flow of current leads to potential drop across the
various elements

7. # Types of Electric Circuit
The electric circuit can be categorized in three
different ways
• Open circuit
• Closed circuit
• Short circuit

8. # Open Circuit
If due to disconnection of any part of an electric
circuit if there is no flow of current the circuit is said
to be open circuited.

9. # Closed Circuit
If there is no discontinuity in the circuit and current
can flow from one part to another part of the circuit
then the circuit is said to be closed circuit.

10. # Short Circuit
If two or more phases, one or more phases and earth or neutral
of AC system or positive and negative wires or positive or
negative wires and earth of DC system touch together directly or
connected together by a zero impedance path then the circuit is
said to be short circuited.
• Series Circuit (A series circuit is a closed circuit in which the
current follows one path)
• Parallel Circuit (A parallel circuit is a closed circuit in which
the current divides into two or more paths before
recombining to complete the circuit)
• Series Parallel Circuit.(electronic circuit can be connected in
many different ways. The two simplest of these are called
series and paralle)