Educators' Guide for Pedagogy and Assessment
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Unit: 3. Electronic Circuits Designs
Engineering Technology
Learning Outcome: 1. I can interpret the different representations of circuits.
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Different electronic components:
- Passive components: e.g. resistor, capacitor, inductor;
- Semiconductors: e.g. diodes and LEDs, operational amplifiers, transistors and MOSFETS;
- Sensors: e.g. light dependent resistor LDR, thermistor, microphone;
- Actuators: e.g. D.C. motors, relays, buzzer;
- Integrated circuits: e.g. logic gates (AND, OR, NOT), NE555, voltage regulators;
- Sources: e.g. batteries, power supplies, solar cells;
- Switches: e.g. SPST, SPDT, DPDT;
- Connectors: e.g. BNC, IC base, screw-type and spring-type PCB connectors.
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Sub-circuits: Potential divider; bridge network; timing circuits; gain/attenuation block.
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Basic laws of electricity: V=IR; P=IV; Resistors and capacitors in parallel and series; T=RC.
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Individual Components: resistor; LDR; capacitor; diode; operational amplifier; transistor; relay; motor; logic gates; battery; solar cell; SPDT.
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Individual components: resistors; diodes; transistors.
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Sub-circuits: e.g. potential divider, bridge network, timing circuits, gain/attenuation block.
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One of the following circuits: Amplifiers, Timers or Oscillators, Filters, Sensing circuits, Actuating circuits, Audio or Visual indicator circuits.
Learning Outcome: 2. I can test and find faults in circuits.
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Tools and equipment: soldering iron; wire stripper; side cutter; long nose pliers; third hand; de-soldering pump; solder wick; track cutter.
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Test Bench Equipment: multi-meter; oscilloscope; signal generator.
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Faults: e.g. missing or misplaced or incorrect components, missing jumpers or footprint pads, miscalculated components or misoriented components.
Learning Outcome: 3. I can construct electronic circuits.
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Electronic boards: breadboard; strip board; PCB.
Parts: bus lines; terminal strips; copper tracks; insulation layer; photo resist layer.
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Process: drawing of the artwork (with or without software); chemical development of PCB; etching of a PCB; populating the PCB.
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Soldering processes for prototypes: cleaning of soldering iron tip and board; preparation of surfaces to be soldered by tinning; applying solder; finishing.
Soldering processes for mass produced circuits: silk screening; surface mount components; soldering baths; robotic assembly.
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Electronic boards: breadboard; strip board; PCB.
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Manufacturing: drawing of the artwork (with or without software); safe handling of chemicals using the appropriate PPEs and procedures; chemical development; etching of a PCB; populating the PCB.