Electronics

The Scout must complete the following:

1. Show an understanding of components by completing the following three tasks:
   1. Be able to recognise common electronic components which are shown to them by the assessor. Explain, in simple terms, the functions that they usually perform in electronic circuits.
   2. Understand the systems used for marking components with their values and be able to identify the values of marked resistors and capacitors. Understand the importance of the rating of a component.
   3. Know the symbols that are used to represent common components in circuit diagrams. Show how to identify the polarity of a diode and a specific pin number on an integrated circuit.
2. Demonstrate a knowledge of safe working practices to be followed when handling electronic components, working on electronic circuits and when soldering.
3. Use a multimeter to measure voltage, current and resistance in a simple circuit. Discuss with the assessor the relationship between these values.
4. Discuss with the assessor the main differences in operation of digital and analogue circuits.
5. Show an understanding of circuits by completing the following two tasks:
   1. Construct three simple circuits, one of which should be based mainly on digital electronics. These may be from a book or magazine, or circuits that they have designed themselves. At least one of the circuits should be soldered, using either strip-board or a custom-made printed circuit board.
   2. Explain to the assessor the principles behind the operation of each circuit and the typical values of voltage and current found in each.