View Index by Level
RANDOM PAGE

SITE SEARCH

LOG
IN

SIGN UP

HELP

Source Follower


This is the AQA version closing after June 2019. Visit the the version for Eduqas instead.

To gain access to revision questions, please sign up and log in.

AS A2

Source Follower Properties

MOSFET-sourcefollower.gif

MOSFET Characteristics

MOSFET-Graph.gif

This graph is for a power MOSFET such as the IRF520 device. You can see that the device does not start conducting until the gate voltage is significantly greater than 3 Volts. An ideal MOSFET would give a straight line graph starting from zero. This graph also explains the 2 to 4 Volt drop mentioned above.

Source Follower Power Calculations

MOSFET-PowerCalc.gif

DC Power is calculated using Volts x Amps. This is the current through the MOSFET and the voltage across the MOSFET.

There are three commonly occurring states.

AC Power Calculations

Source Follower Experiment

MOSFET-SourceFollowerTask.gif

 

 

 

reviseOmatic V3     Contacts, ©, Cookies, Data Protection and Disclaimers Hosted at linode.com, London