BASICS OF ELECTRONICS

Resistor Capacitor

Transistor Diode

RESISTORS

Resistors are used to limit current or divide voltage and in some cases, generate heat.

Used for driving circuit which requires low current and voltage than available.

A two terminal non-polar componentUnit of resistance is ‘Ω’.

Physical appearance

Color code table

Practical Use….• To reduce the current flowing in circuit, use resistance in

parallel.

• To reduce the voltage for any circuit, use resistance in series.

CAPACITORS

A two terminal electronic component which stores energy in form of charge.

Capacitance is a measure of a capacitor's ability to store charge.

Measured in Farads(F) µF or pF

Types of capacitors

Polarised: Specified +ve and –ve terminals

Non Polarised: No defined terminals

Practical use• Timer Circuits.

• Clipper & clamper circuit.

• DC filter circuits.

DIODES

• A two-terminal electronic component that conducts electric current in only one direction.

The direction of arrow shows the only possible direction of current.

Types of diodes

• LED (Light Emitting Diode)Emits light when provided with power supply.

• Photo DiodeGenerates Current when it is exposed to light.

TRANSISTOR

• A transistor is a semiconductor device commonly used to amplify or switch electronic signals.

• The three terminals are Emitter, Base and Collector

• Transistor are of two types:

1-> n-p-n

A straight switch

2-> p-n-p

A inverted switch

Practically used…

• As a switch

• As an amplifier

MatlabInstallation

Assembling of Robot

Soldering PCB