PRACTICAL ELECTRONICS MASTERCLASS (Mr Bell) (COMPUTERS REQUIRED FOR 1 ST PERIOD) 1.

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Presentation transcript:

PRACTICAL ELECTRONICS MASTERCLASS (Mr Bell) (COMPUTERS REQUIRED FOR 1 ST PERIOD) 1

BRAIN POP VIDEO Electric Circuits

Circuit Diagrams & Symbols When you want to draw a circuit, you can use circuit symbols to represent the different components. Each component has its own symbol. The symbols are the same for everyone so that people can read each other’s diagram. These are the most common symbols, but you will learn more through out the course.

Symbols and conventions used Resistors LEDS Resistors networkWires Microcontroller 18 Pin = Maximum number of connections available Power supplySlide Switch Tilt Switch Push Switch Resistors colour code system Standard battery size 50.5mm x 14.5mm

Source & complete a component list Task:- Search the product codes on the Rapid Electronics website ( Electronics websitewww.rapidonline.com and identify the components name and value. Then work out the quantity you need from the given code letters.

For example:- Go to Rapid Electronics website Go to Rapid Electronics website and search for

Completed list Discuss list with pupils and check for mistakes.

Discuss different types of construction:- Prototype breadboards Breadboards are used to test circuits. Wires and components are simply pushed into the holes to form a completed circuit and power can be applied. One of the main advantages of using a breadboard is that the components are not soldered and if they are positioned incorrectly they can be moved easily to a new position on the board.

Strip boards (often called Veroboard) Strip board is a widely used type of electronics prototyping board characterized by a 2.5mm regular grid of holes, with wide parallel strips of copper cladding running in one direction all the way across one side of the board. Electricity passes through the copper strips and components and wires are used to cross over and create circuits.

Printed Circuit Boards (PCB) A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non - conductive substrate. THIS IS THE METHOD WE WILL USE BECAUSE:- The POV wand is a more complex circuit & it suits the design, i.e. smaller in size.