Uses
In this potential divider the second resistor is a thermistor. When the
temperature is low the resistance (R2) is high, this makes the output voltage
high. When the temperature is high the resistance (R2) is low, this makes the
output voltage low. A use of this would be a cooling fan that works harder
when it is warm.
In the second potential divider the second resistor is a Light Dependant Resisitor.
When the light levels are low the resistance (R2) is high, making the output voltage
high. When the light levels increase the resistance (R2) decreases, this makes the
output voltage decrease. A use of this could be a street light sensor that lights up
when the surrounding are dark.
| Section 5 | Alternating Current | |
|---|---|---|
| Lesson 8 | ||
| Learning Outcomes | To know what peak current/voltage is and to be able to identify it | |
| To know what peak-to-peak current/voltage is and to be able to identify it | ||
| To know what r.m.s. values are and to be able to calculate them | M.BENYOHAI |