Download Lecture1 Introduction

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Switched-mode power supply wikipedia, lookup

Opto-isolator wikipedia, lookup

Current mirror wikipedia, lookup

Schmitt trigger wikipedia, lookup

Resistive opto-isolator wikipedia, lookup

Surge protector wikipedia, lookup

Current source wikipedia, lookup

Ohm's law wikipedia, lookup

Rectiverter wikipedia, lookup

Multimeter wikipedia, lookup

Power MOSFET wikipedia, lookup

TRIAC wikipedia, lookup

Operational amplifier wikipedia, lookup

Network analysis (electrical circuits) wikipedia, lookup

Negative resistance wikipedia, lookup

Transcript
Electron and Conventional current flows
• Electric current flow is the movement of ‘free’ electrons
along a conductor. Electrons are negative charges.
Negative charges are attracted to positive charges.
Electrons move from the negative terminal of a battery to
the positive terminal. This is called electron current flow.
• Another way to look at electric current flow is in terms of
charges. Electric charge movement is from an area of
high charge to an area of low charge. A high charge can
be considered positive and a low charge negative. With
this method, an electric charge is considered to move
from a high charge (positive or +) to a low charge
(negative or -). This is called conventional current flow.
© Unitec New Zealand
13