Electronics Unit 2 - Further Electronics
In this unit we look at the role of the capacitor as a timing device, and how it is used with timing circuits.  Such circuits are used to generate signals that can be used in a variety of manners in electronic circuits.  Sine wave signal generators are used to test audio and control circuits.  Square waves generators are essential for co-ordinating the actions that occur within computers.

We look at how bistable circuits can be used to act as memories to hold simple numbers.  Counters are used to control numerical processing.

Amplifiers are used to enlarge the very small electrical signals to make them do useful jobs.  We will look at the role of the operational amplifier which is at the heart of converting analogue signals to digital signals, the form in which such signals are processed in computers.  Then we look at the power amplifier which allows electronic signals to move large output devices like loudspeakers.

Capacitors and Timing Subsystems
Tutorial 1 Capacitors Go
Tutorial 2 RC Networks with DC Go
Tutorial 3 Timers Go

Sequential Logic and Counters
Tutorial 4 Sequential Logic Go
Tutorial 5 Counters Go
Amplifiers
Tutorial 6 Operational Amplifiers and Amplifier Basics Go
Tutorial 7 Inverting Amplifiers Go
Tutorial 8 Non-inverting Amplifiers Go
Tutorial 9 Summing Amplifiers Go
Tutorial 10 Difference Amplifiers Go
Tutorial 11 Voltage Followers Go
Tutorial 12 Power Amplifiers Go

AS Data Sheet (.pdf file).  Click on the PDF icon.  Download it, print it off, and use it whenever you do a test. 

It will also make very good lavatory reading.  Knowing where a formula can be found will help you no end in the exam.

Unit Test (Past Paper - June 2009)

 Past Paper

Unit Test (Mark Scheme - June 2009) - Note that a mark scheme does not give model answers.  If in doubt, ask your teacher.

 Mark Scheme

Home (just like it says on the button)

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