Electrical Circuits

Utah Underwater Robotics

Instruction Slides

Basics

• What is electricity?– Flow of electrons from one place to another.– Electrons must be able to move.

• Voltage (V), Current (I), Resistance (R)– Fluid pump analogy.

Analogy

• Pressure – Voltage• Water Flow – Current• Hose Size – Resistance

Basics

• Units (V, A, W)• Ohm’s law

Voltage = Current * Resistance V=IR

Components

Resistor

LED (Light Emitting Diode)

DPDT (Double Pole Double Throw) Switch

Fuse

Schematics

9V Battery30 mA LED

R = V/I

9V/0.03A = 180W

Soldering

• Tools• Procedure• Safety