I"m busy with a project which will measure the AC current and AC voltage and then display the values on a LCD.
I've got a ACS712, the 5A version .The problem is I've connected it all up and don't detect any voltage increase on the output pin. It sits at 2.5V.
The problem is the input current is too low - I've plugged my soldering iron in and it only draws 70mA (According to my DVM) From reading the specs of the ACS712 this current is too low for it.
Any recommendations on what I can use to measure these low currents. Are there any other sensors I can use for this?
I also tried plugging in a fan - still no movement on the output pin. How much current do I have to put through the thing to get a change on the output pin?
I've got a ACS712, the 5A version .The problem is I've connected it all up and don't detect any voltage increase on the output pin. It sits at 2.5V.
The problem is the input current is too low - I've plugged my soldering iron in and it only draws 70mA (According to my DVM) From reading the specs of the ACS712 this current is too low for it.
Any recommendations on what I can use to measure these low currents. Are there any other sensors I can use for this?
I also tried plugging in a fan - still no movement on the output pin. How much current do I have to put through the thing to get a change on the output pin?