ELECTRONIC PARTS AND SYMBOLS
Objectives
·
Help the scout complete the
following merit badge requirements:
6.a. Explain the difference between a block
diagram and a schematic diagram.
6.b. Draw a block diagram that includes a
transceiver, amplifier, microphone,
antenna and feedline.
6.c. Explain the differences between an open,
a closed, and a short circuit.
6.d. Draw eight schematic symbols for
electrical parts.
6.e. Explain what three of the electrical
parts do.
6.f. Find three electrical parts to match three
of the schematic symbols.
Reference Materials
·
Handouts: Block and Schematic Diagrams
Schematic
Symbols for Electronic Parts
·
Merit badge pamphlet
pages: 20-29.
·
Demonstration board with
jumper wires, batteries and spare fuses.
·
Box of mixed electronic
parts and boards with electronic parts on them.
·
8.5 X 11 blank paper for
scouts to use.
Suggested Activities
·
Use the block diagram Block
and Schematic Diagrams handout to illustrate both types of diagrams.
·
Use the test board to
demonstrate:
Open
circuit, closed circuit and short circuit.
A
resister reduces the amount of current (electricity) flowing in a circuit.
A
diode only passes current in one direction.
A
capacitor will not pass DC current (or low frequency AC).
Ask
the questions posed on the board.
The
difference between AC and DC current.
·
Use the Schematic
Symbols for Electronic Parts handout along with the box of parts and the parts
on the boards to identify some of the parts and the corresponding symbols.
·
Page through pages 20-29
from Radio Merit Badge pamphlet with the scouts and answer any questions the
scouts have.
Verifying Scouts Have Met the Merit Badge Requirements
·
Meet with each scout
individually so they can present to you the information required to fulfill
each of the above merit badge requirements.