Dumitru Stama <list <at> mirosat.com> writes:

> 
> 
> Hi guys,
> I have a short question i cannot answer by myself. I want to be able
> to measure how much current is drawn from my circuit using PIC's ADC
> and some sensor maybe... Do you happen to know a simple way to do
> this? I used TL431 as a reference if i am not mistaken to measure
> how much voltage i still have in the batery and it works really good.
> I can light up a red led when the voltage is too low but i want to be
> able to calculate the instant current consumption.
> 
> Thank you in advance for your time
> Dumitru Stama

Dumitru,

There are high-side current sensors available, e.g. MAX4374 and many others.

http://www.google.com/search?q=high%2Dside+current+sensor

Sergey Dryga
http://beaglerobotics.com

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