[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Paparazzi-devel] YAPA2 help needed "SOLVED"

From: Christophe De Wagter
Subject: Re: [Paparazzi-devel] YAPA2 help needed "SOLVED"
Date: Fri, 10 Aug 2012 10:46:49 +0200

Only ADC inputs with a voltage devider (YAPA/TWOG) are slightly current limited. Other inputs are totally unprotected. 


On Fri, Aug 10, 2012 at 9:46 AM, Chris <address@hidden> wrote:
I did some calculations after downloading the INA169 manual and the Attopilot schematic
The results are horrifying.
The current sensor's output is not current limited as it does not have any resistor in line with the output
and the output follows the I*Rs *(72.3K/1K) formula (72.3K/1K is the op-amp's gain)
Assuming a surge current of 100A which is low when thick wiring, low ESR capacitors
and high voltage is used we get an output of 7.23v with no current limiting.
A 150A surge current  will give an output of 10.8v Arggghhhh.....

Paparazzi-devel mailing list

reply via email to

[Prev in Thread] Current Thread [Next in Thread]