Battery

Cell

Ground

Voltage rail

Variable voltage

Fuse

Resistor

Capacitor

Electrolytic capacitor

Diode

Zener diode

Thyristor (SCR)

NPN transistor

PNP transistor

555 timer

Operational amplifier

Inverter

AND gate

OR gate

NAND gate

NOR gate

AC source

Inductor

Transformer

Push-to-make switch

Push-to-break switch

SPST switch

SPDT switch

DPST switch

DPDT switch

Variable resistor

Potentiometer

Light sensor (LDR)

Moisture sensor

Temperature sensor

Float switch

Reed switch

Bulb

Buzzer

Red LED

Yellow LED

Green LED

Motor

SPDT relay

DPDT relay

Solenoid

Ammeter

Voltmeter

Analogue multimeter (volt, current)

Digital multimeter (volt, current, ohm)

Oscilloscope (2 channel)