2.5 Practical Electronic Circuits Flashcards
What are the three parts of an electronic system? (in order)
The input, the process, the output
What are examples of input devices?
Thermistor
LDR
Switch
What is the energy change in a microphone?
Sound energy—-> Electrical energy
What happens to the resistance of a thermistor with changes in temperature?
High temperature- Low resistance
Low temperature- High resistance
What happens to the resistance of an LDR with changes in light levels?
Bright- Low resistance
Dark- High resistance
What are appropriate input devices for given applications?
Microphone- loudspeaker
Thermistor- heating system
LDR- automatic lamp
Switch- lighting circuit
What is the energy change in an output device?
Electrical energy—–> another form of energy
What are some examples of output devices?
Loudspeaker Buzzer Lamp LED Electric motor
What are appropriate output devices for given applications?
Loudspeaker- radio
Buzzer- smoke alarm
LED- warning light
Motor- fan
How do you draw a NOT gate?
Triangle with a small circle and one line at each side.
How do you draw an AND gate?
Semi circle, two lines at the left side (input) and one at the right side (output).
How do you draw an OR gate?
Weird curved shape with two at the left and one on the right.
What does the truth table for a NOT gate look like?
Input Output
0 1
1 0
What does the truth table for an AND gate look like?
Input A B Output 0 0 0 0 1 0 1 0 0 1 1 1
What does the truth table for an OR gate look like?
Input A B Output 0 0 0 0 1 1 1 0 1 1 1 1
