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Download syllabus checklist -

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• 2526 - FOUNDATIONS OF ELECTRONICS

5.1.1 - System Components
5.1.2 - Fundamentals of Circuit Building
5.1.3 - Operational Amplifier Systems
5.1.4 - Digital Systems

• 2527 - SIGNAL PROCESSING

5.2.1 - Negative Feedback
5.2.2 - Positive Feedback
5.2.3 - Boolean Algebra & Synchronous Counters
5.2.4 - Analysis of systems

• 2529 - COMMUNICATION CIRCUITS

5.4.1 - Resonant Circuits
5.4.2 - Transistor Circuits
5.4.3 - Analogue Communication Systems
5.4.4 - television Systems
5.4.5 - Digital Communication Systems

• 2530 - CONTROL CIRCUITS

5.5.1 - DC Servo Control Systems
5.5.2 - Triacs
5.5.3 - Logic & Memory Systems
5.5.4 - Micro-processor Systems

• EXAMS & TESTS

SYSTEM COMPONENTS

• KIRCHOFF CIRCUIT EXAMPLES - Current and voltage circuits - -

CIRCUIT FUNDAMENTALS

• +/- 15 VOLT REGULATOR CIRCUIT - Good supply for operational amplifiers - -
• BASIC POWER SUPPLIES SUMMARY - Revision material for power supplies -
• LOGIC GATE MONOSTABLES - NAND & NOR gate monostables - -
• WAVE DEFINITIONS - Square, Sine and Triangle wave definitions as formulas -
• ZENER REGULATOR EXAMPLES - Ways of regulating voltages - -

OPERATIONAL AMPLIFIER SYSTEMS

• AUDIO VU METER - example of op-amps as comparators - - - Breadboard layout -
• CROSS-OVER DISTORTION - Example of distortion and eliminating it using an op-amp - -
• LED VOLTMETER - more op-amps as comparators - - - Breadboard layout -  
• LIGHT METER - even more op-amps as comparators - -  - Breadboard layout -

LOGIC SYSTEMS

• BI-STABLES TO FLIP-FLOPS! - bistable design developed into a D-type flip/flop - -
• CHANGING NAND GATES TO NOR - Step by step presentation -
• FRUIT MACHINE - Using 7 segment displays as reels and some logic utilising EXOR gates to check for wins - -
• FULL ADDER - 2 full adders forming a 2-bit adder with 7 segment outputs - -
• HALF ADDER - 2 logic gates form a simple single bit half adder - -
• HEXADECIMAL DECODER - Some extra logic and a 4511 - -
• MASTER/SLAVE D-TYPE FLIP-FLOP - logic gate construction of a D-type F/F - -
• NAND GATE SUMMING OF TERMS - how to use NAND gates instead of multiple types - -
• PRIME NUMBER DETECTOR - generating logic circuit from a Boolean expression - -

• ACTIVE FILTERS - An example of bass cut and treble cut filters - -
• FILTERS SUMMARY - Summary of Bass & Treble boost/cut active filters -
  
• GRAPHIC EQUALISER - a 5 channel graphic equaliser using op-amps as active filters - -
• NEGATIVE FEEDBACK SYSTEMS - Inverting/non-inverting amps and ramp generator - -
• PLOTTING FILTER CHARACTERISTICS - Step by step plotting filter characteristics on a graph -
• AUDIO FILTERING - 5 channel sound to light unit - -
• SUMMING AMPLIFIER CIRCUITS - A couple of example circuits mixing DC & AC signals -
• GUITAR FUZZ AMPLIFIER - Using an inverting amplifier with diode feedback clipping - -
• INVERTING AMPLIFIER - Uses an op-amp without a dual rail supply - -
• NON-INVERTING AMPLIFIER - Uses an op-amp without a dual rail supply - -
• INVERTING/NON-INVERTING AMPLIFIER - A switchable mode amplifier - -

POSITIVE FEEDBACK

• DRILL SPEED CONTROLLER - A PWM supply using ramp generator and comparator - -
• ELECTRONIC ORGAN - A long-winded but effective organ using ramp/square oscillators -
• POSITIVE FEEDBACK SYSTEMS - Schmitt triggers and oscillators - -
• RAMP/WAVE OSCILLATOR - Schmitt trigger & ramp generator - - - Breadboard layout -
• RELAXATION OSCILLATOR - Inv. Schmitt trigger and RC network - - -Breadboard layout -

BOOLEAN ALGEBRA & COUNTERS

• 24 HOUR CLOCK - Hours minutes and seconds using BCD counters & 7-segment decoders - -
• COUNTING IN BINARY - A powerpoint presentation showing a 4-bit binary count from 0 to 15 -
• D-TYPE BINARY RIPPLE COUNTER - How to create a binary ripple counter -
• ONE SHOT SEQUENCER - Using a F/F and counter to produce a 6 pulse burst - -
• RACE HAZARD - An example of Race Hazard effect when using binary ripple counters - -
• SYNCHRONOUS COUNTERS - Progresively shows how to make 2,3 and 4 bit counters with D-types and logic - -
• TRAFFIC LIGHT SEQUENCER - Traffic lights from a binary counter and very little logic - -

ANALYSIS OF SYSTEMS

• AUDIO AMPLIFIER - A basic design showing 4 system blocks in a standard audio amplifier - -
• DARLINGTON PAIR - Current flow explained in an NPN Darlington pair configuration -

• TUNED CIRCUITS - Some parallel tuned circuits using LC filters -

TRANSISTOR CIRCUITS

• CMOS GATE AMPLIFIER - Logic gate answer to amplify small signals - -
• TRANSISTOR AMPLIFIERS - 3 different types of transistor amplifier - -

ANALOGUE COMMUNICATION SYSTEMS

• ANALOGUE CABLE TRANSMISSION - How to overcome losses in transmission cables - -
• FREQUENCY MODULATING A 555 ASTABLE - An actual application for pin5!! - -

TELEVISION SYSTEMS

DIGITAL COMMUNICATION SYSTEMS

• 4-BIT ADC - A 4-bit digital to analogue converter - -
• 4-BIT ADC - Voltmeter with 7 segment display - -
• 4-BIT SUCCESSIVE ADC - Fast ADC using successive approximation method - much faster!! - -
• 8-BIT SUCCESSIVE ADC - 8-bit version. - -
• 4-BIT DAC - 4-bit digital to analogue converter - -
• 8-BIT DAC - 8-bit digital to analogue converter producing ramp waveform - -
• DIGITAL TRANSMISSION - Model of 4-bit digital streaming -
• DIGITAL WAVE GENERATOR - Creating waves using a binary word genrator and a DAC - -
• DIGITAL WAVE GENERATOR 2 - Creating waves with higher resolution - -
• FSK MODEM - Example of data transmission using Frequency Shift Keying modulation - -
• FREQUENCY TO VOLTAGE CONVERSION - Using the LM2917 for a few useful applications -
• RS232 4Bit TRANSMISSION - A simple 4 bit transmitter and receiver demonstrating the principle of RS232 - -

• SERVO CONTROLLER - A 555 astable driving a monostable - -

TRIACS

LOGIC & MEMORY SYSTEMS

• BASIC REGISTERS - Examples of SIPO and PIPO registers using D-type F/F - -
• BASIC REGISTERS 2 - Examples of PISO and SIPO registers using D-type F/F - -
• COMPLEX REGISTERS - Serial in/out and parallel in/out - -

MICROPROCESSOR SYSTEMS

• SERIAL ADDITION - A serial adder using 2 x 4bit values to produce a 5bit result - -
• SERIAL SUBTRACTION - A simple alteration to the adder - surprisingly simple - -
• EZCPU - The EZ-CPU page
• EZCPU WORKSHEETS
  Worksheets for use with the EZCPU covering the assembly language aspects of the Control Module (2530). Good examples of flowchart design and implementation.
• GLOSSARY OF TERMS - Glossary of Terms worksheet -

• OCR Test Papers from OCR web site
  
• POWER SUPPLY EXAM - Design of stabalised and regulated power supplies, 30 minutes -

The following are authored by Michael W. Brimicombe and follow his book "Electronics Explained" which I use to aid delivery of the course. These are from his website and are a series of revision exercises and experiments covering various topics.

• Analogue Systems
• Analogue Transmission
• Control Systems
• Digital Systems
• Digital Transmission
• Microprocessor systems
• Power Supplies
• Sequential Systems
• Signal Processing
• Timing Circuits
• Transistor Circuits

IMPORTANT - The following are OCR papers and subject to copyright - you may only use these for personal revision use - downloading these papers is a an agreement by yourself to adhere to this regulation and all copyright associated with them.

• 2526 - Fundamentals of Electronics - 2004
• 2526 - Fundamentals of Electronics - 2005
• 2527 - Signal Processing - 2004
• 2529 - Communication Circuits - 2006
• 2529 - Communication Circuits - 2007
• 2530 - Control Circuits - 2003
• 2530 - Control Circuits - 2004