Download Standard Grade Physics: Electronics- Checklist

Rosshall Academy Physics Department
Standard Grade Physics
Unit 4: Electronics
Checklist
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Standard Grade Physics: Electronics- Checklist
The statements below show everything that you should know by the end of this unit.
The circles at the end of each statement will allow you to show your teacher that you understand what it
means.
If you know for sure what the statement means colour the circle green. You will not need to revise this
much for your test.
If you think that you know what the statement means colour the circle orange. You’ll need to work at
understanding this for your test. Try reading your notes or you might have to ask your teacher.
If you don’t understand what the statement means colour the circle red. You will need to ask for more
help from your teacher to help you understand this.
Section 1: Overview
At General Level
By the end of this section you should be able to:
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1.
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State that an electronic system consists of three parts:
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input, process and output;
2.
Distinguish between digital and analogue outputs;
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3.
Identify analogue and digital signals from waveforms viewed on an oscilloscope.
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Section 2: Output Devices
At General Level
By the end of this section you should be able to:
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1.
Give examples of output devices and the energy conversions involved;
2.
Give examples of digital output devices and of analogue output devices;
3.
Draw and identify the symbol for an LED;
4.
State that an LED will light only if connected one way round;
5.
Explain the need for a series resistor with an LED;
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State that different numbers can be produced by lighting appropriate segments
of a 7-segment display.
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At Credit Level
By the end of this section you should be able to:
7.
Identify appropriate output devices for a given application;
8.
Describe by means of a diagram a circuit that will allow an LED to light;
9.
Calculate the value of the series resistor for an LED;
10. Calculate the decimal equivalent of a binary number in the range 0000 - 1001.
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Section 3: Input Devices
At General Level
By the end of this section you should be able to:
1.
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Describe the energy transformations involved in the following devices:
microphone;
thermocouple;
solar cell;
2.
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State that the resistance of a thermistor changes with temperature and
the resistance of an LDR decreases with increasing light intensity;
3.
Carry out calulations using V = IR for the thermistor and LDR;
4.
State that during charging the voltage across a capacitor increases with time;
5.
Identify from a list an appropriate input device for a given application.
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At Credit Level
By the end of this section you should be able to:
6.
Carry out calculations involving voltages and resistances in a voltage divider;
7.
State that the time taken to charge a capacitor depends on the values of
the capacitance and the series resistance;
8.
Identify appropriate input devices for a given application.
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Section 4: Digital Processes
At General Level
By the end of this section you should be able to:
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1.
State that a transistor can be used as a switch;
2.
State that a transistor may be conducting or non-conducting, i.e., On or Off;
3.
Draw and identify the circuit symbol for an NPN transistor;
4.
Identify from a circuit diagram the purpose of a simple transistor switching circuit;
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5.
Draw and identify the symbols for two input AND and OR gates, and a
NOT gate;
6.
State that logic gates may have one or more inputs and that a truth table shows
the output for all possible input combinations;
7.
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State that
high voltage = logic '1'
low voltage = logic '0';
8.
Draw the truth tables for two input AND and OR gates, and a NOT gate;
9.
Explain how to use combinations of digital logic gates for control in simple
situations;
10. State that a digital circuit can produce a series of clock pulses;
11. Give an example of a device containing a counter circuit;
12. State that there are circuits which can count digital pulses;
13. State that the output of the counter circuit is in binary;
14. State that the output of a binary counter can be converted to decimal;
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At Credit Level
By the end of this section you should be able to:
15. Explain the operation of a simple transistor switching circuit;
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16. Identify the following gates from truth tables:
two-input AND
two-input OR
NOT (inverter);
17. Complete a truth table for a simple combinational logic circuit;
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18. Explain how a simple oscillator built form a resistor, capacitor and inverter
operates;
19. Describe how to change the frequency of the clock.
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Section 5: Analogue Processes
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At General Level
By the end of this section you should be able to:
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Identify from a list, devices in which amplifiers play an important part;
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2.
State the function of the amplifier in devices such as radios, intercoms and
State that the output signal of an audio amplifier has the same frequency as,
but a larger amplitude than, the input signal;
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music centres;
3.
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Carry out calculations involving input voltage, output voltage and voltage gain
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of an amplifier.
At Credit Level
By the end of this section you should be able to:
5.
Describe how to measure the voltage gain of an amplifier;
6.
State that power can be calculated from V /R where V is the voltage and
R the resistance (impedance) of the circuit;
7.
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State that the power gain of an amplifier is the ratio of power output to
power input;
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Carry out calculations involving the power gain of an amplifier.
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