watt ,voltage & amp sensor

[Brian_B]

Hi,
·I own one of these Dr. Wattson meters . http://www.rc-electronics-usa.com/ammeters/dc-amp-meter.html·· , what kind of sensor do you think their using to read values ?

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Thank's Brian


www.truckwiz.com (http://www.truckwiz.com)

·"Imagination is more important than knowledge..." ·· Albert Einstein

[metron9]

The specs on the site show it has a .001 ohm resistance. So they are measuring voltage across a .001 resistance using a microprocessor with an ADC and calculating the values against time. Typically another chip (current sense) that amplifies the voltage across the resistance is used as well.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Think Inside the box first and if that doesn't work..
Re-arrange what's inside the box then...
Think outside the BOX!