Measuring Amps with CAI webcontrol

[JimS]

Here is some information on peak detectors/ideal diode circuit and current transformers
 
http://forum.arduino.cc/index.php/topic,22264.0.html

 

[CAI_Support]

Jim,
 
Thanks, transformer has advantages for measuring current without modifying the wiring. Like this transducer:
http://www.ebay.com/itm/360673652788
However, they will need op-amplifier for lower current.

 

[CAI_Support]

This is split core one, easily to clamp on the power main
http://www.ebay.com/itm/290908896223
 
There are also 30A version of this.

 

[BTCAD]

Hi, can you tell me if there is another sensor on the market like the ACS712 ? I'm looking for a sensor that can measure up to 2amp. So ACS712 5amp should be a good choice. Any other tries or sensors used with CAi boards?
 
 
regards,

 

[BTCAD]

Maybe  ? MAX471 

 

[CAI_Support]

That has 3A range with 35mOhm resistance. Different from ACS chip, that use 2.5V for 0A, this MAX471 using a sign bit to indicate the current flow direction.  There are a lot of ready made modules on eBay using this chip.