Electrical Systems Flashcards
What does the process do
Changes the signal
What does the output do
Gives desired effect
What can an output do
It can be analogue or digital
What is analogue
Continuously variable values
What does digital do
Only has 2 values on and off
What does the microphone do
Changes sound into electrical energy
What does a thermocouple do
Changes heat into electrical energy
What does a solar cell do
Light into electrical
What does a thermistor do
When it is heated the reading on the ohmmeter decreases
Temperature up resistance down
How does an ldr work
When exposed to light ohmmeter decreases
How does an led work
It only alows current in one direction this is called forward bias and created by joining two materials together
How does a loudspeaker work
Changes electrical into sound
How does an electrical
Motor work
Changes electrical into kinetic when voltage increases speed increases
How does a relay work
When switch is closed current flows through coils of wire creating electromagnet
How does a buzzer work
Changes electrical into sound
