BAA Pakuranga DTG Y13 Plan US 19744 Analogue and Digital Page 1

Module Electronics and control

Unit Title Digital and analogue electronics concepts Year 13 (Level 3) US 19744 Version 3

Introduction In this unit students will  Develop understanding of transducers as input devices – through research  Explore the function of logic gates and their combinations using real circuits and/or simulations  Construct op amp circuits and compare calculated voltage values to real circuits  Learn about digital and analogue signals and a simple A to D converter using circuit blocks

DTG NZ Curriculum Key Indicators Curriculum Focus  Develop high quality and reliable solutions L7/8 technology  Use, design, test, evaluate, refine and justify outcomes Technological products • Understand the concepts and processes employed in materials evaluation  Design and model a prototype for an outcome and the implications of these for design, development, maintenance, and disposal of technological products. Technological systems Areas of Knowledge • Understand the concepts of redundancy and reliability and their implications  Knowledge of materials and components including for the design, development, and maintenance of technological systems. semiconductors Characteristics of technological outcomes • Understand that technological outcomes are a resolution of form and  Design, test, evaluate, repair and alter circuits and function priorities and that malfunction affects how people view and accept electronic systems outcomes.  Signal processing (including amplification) L7/8 science  AC/DC concepts Physical inquiry and physics concepts • Investigate physical phenomena (in the areas of mechanics, electricity,  Digital and analogue concepts (including A to D electromagnetism, light and waves, and atomic and nuclear physics) and converters and logic gates) produce qualitative and quantitative explanations for a variety of unfamiliar situations.  Microcontrollers Using physics  Operational amplifiers • Use physics ideas to explain a technological or biological application of physics.  Robotics Key Competencies . Thinking - students are required to access and process relevant information from a variety of sources and find suitable explanations of function, use logic in simple Boolean algebra . Using Language, symbols and text – students will use complex symbols for logic gates and op amps and combine them in circuits, use circuit schematics, use truth tables, explain clearly the function of components and circuits. . Managing Self – students have to work independently to complete research and construct working circuits . Relating to others – students interact with others in the classroom (teacher and students) in practical work, sharing resources and ideas. . Participating and contributing – students participate fully in each lesson, sharing knowledge and creating learning opportunities for others. . Assessment opportunities Students will be assessed using NCET US 19744 , using pre-moderated tasks from ETITO. The elements can be done as students are ready for each task

Student prior knowledge Students using this resource will have an understanding of  basic electricity (current, voltage, resistance)  electronic components and their uses in L2 Electronics  circuit schematics and building of prototype circuits.  possibly wave forms in L2 physics and analogue/digital signals in US 19745

BAA Pakuranga DTG Y13 plan US 19744 Analogue and Digital Page 1 Resources required  Access to suitable texts, catalogues, internet,  circuit prototyping boards, components including op amp chips  logic trainer boards or simulation program or other suitable circuit

Resources supplied . Worksheets . Paknotes . access to circuit simulation program (Crocodile Physics)

Special notes

Paknotes is a resource developed at Pakuranga College and available on request.

Learning experiences Resources/special notes Students investigate properties of transducers. They will need to find . Pakuranga notes = paknotes 1. Symbol . Components: microphone, loudspeaker, 2. Function with typical input/output buzzer, heat sensor (thermistor), light 3. Use in circuits sensor (ldr), hall effect device, reed 4. Problems such as – noise, non-linearity, harmonic distortion, contact switch, mercury tilt switch, strain gauge, bounce shaft encoder, piezo device (sounder). Assess - Task 1 US 19744 . Access to internet/resource books & catalogues/data sheets . Prototyping circuits and/or simulator such as “Crocodile Physics” or “Yenka Approximate classroom time 6 hours electronics” Digital signals as on/off states . Paknote/worksheets Use “logic trainer boards” and/or computer simulator (Crocodile Physics) with . Logic Trainer boards work sheets to explore the gates and their function. . Simulation program Truth tables for logic gates are constructed and their symbols sketched gates – NOT, NOR, OR, NAND, AND, Exclusive OR.

NB It is possible to scratch build the circuits but it is time consuming. It is . logic chips (40118) & components for suggested as an extension activity. circuits.

Assess – Task 2 US 19744

Approximate classroom time 4 hours Function of the operational amplifier. Notes drawn from classroom Electronics for Today and Tomorrow (T. instruction, information in text book/paknotes Duncan) or other suitable text. Paknotes Worksheets with problems to consolidate ideas 741 op amps or similar Construction of real circuits and simulator circuits. Breadboard & components for circuit

Simulator program (Crocodile Physics or Assess – Task 3 US 19744 (includes building circuits) similar)

Approximate classroom time 12 hours Review analogue and digital signals Paknotes and text such as Advanced Physics Explain A to D converter as a combination of parts studied so far: for You or Electronics for Today and  input device Tomorrow  op amp  logic gates (AND, and “latch”)  digital signals Notes and worksheet. Look at using picaxe chip (microcontroller) for this function

Assess – Task 4 US 19744

Approximate classroom time 5 hours

BAA Pakuranga DTG Y13 plan US 19744 Analogue and Digital Page 2