Electronic brick - Electricity meter(Analog)

End-Of-Life Products & Services Tech support before 2012
#1

Hi,

I bought a Electronic brick - Electricity meter (Analog) recently and would like to use it. Can anyone help me with an example for Arduino?

MERRY CHRISTMAS

Ailton

#2

The electricity meter can used to measure the AC current through it , and it scale the AC current through it as 2000:1 and output , on the Electronic that this output current is by a resistor to change to voltage . so when 1A AC current through the electricity meter , the output voltage is about 400mV.

#3

Hi,

I also recently bought this product, but without any docs or schematics its kind of hard to use…
For example:

  • What does the potentiometer do?
  • What does the jumper pins do (it says “On” / “Off”)??
  • Voltage limitations? Can I run the cable of a 220V power strip through the meter and measure the current consumption of the devices hooked into the meter (this was my plan…)

Any help appreciated…
Thx, Goran

#4
  1. the potentiometer just work as a resistor to change the current output into the voltage output.
  2. if you jump the jumper on ON that you can use the module , but jump it on OFF that it doesn’t work .
  3. 220V is all right. it’s designed for doing something like your plan , go ahead.
#5

As expected then, but what value is the potentiometer? When measuring it, it seems to go from ca 150 ohm to ca 1050 ohm (if I remember correctly). Is there a 150 ohm resistor in series as well, built into the potentiometer?

Thx
-G

#6

you can not measure a resister when it’s in a circuit…or you will never get the value you want …

and it’s 800ohm
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