How to make an AC voltage detector using LED?. At this time the admin will share about how to make an AC voltage detector using LED where the circuit function can be used as a series of simple AC voltage sensor
As you already know that LED lights or often referred to as LEDs can only flow one-way flow only
The LED only lights up when an electric current flows from the anode to the cathode
If the electric current is reversed then the LED will not turn on. Well the properties can be used to detect the voltage of the AC using your LED. Please read also an article what is LED and how does it work?
how does AC voltage detector works (AC voltage sensor circuit)
An LED requires a working voltage of 2.5 to 3V DC but if you connect it with a higher voltage then you should install a resistor as a current holder
Also read what is a resistor and how does it work?
The LED will be lit when given a forward bias voltage (current flows from the anode to the cathode). Consider the following picture
But if the LED foot or current source is reversed in the sense of being rewarded the LED will not turn on
By considering the above circuit then my friend can conclude that the DC current LED will only light up if the legs LED is connected properly. However, this does not apply if the LED is connected to AC voltage
how to make AC voltage using LED
In AC power the voltage and direction of the electric current will change periodically
This means that the positive and negative poles will also change periodically and have no fixed value
- series and parallel resistor circuits
- what is ADC and how does ADC work?
- Definition of AC and DC current
If you install the LED on the AC voltage then the LED will stay on even if you turn the LED position. That’s why LED lights are often used as an indicator on AC voltage
the following simple circuit you can use as an AC voltage detector
The way the circuit works is if both LEDs turn on then it is certain that the electricity that my friend checks is AC power
But if one LED is lit then the electricity is DC power
the simple circuit above is only used to check whether the power is AC or DC type and can not be used to measure the voltage (just as a series of AC or DC voltage sensors only)
Similarly article about detecting AC voltage using LED. Please read my friend also article about serial and parallel electrical circuit