Analog +/-10V to Bridge Amlifier

thuaniam

Mar 21, 2014
5
Joined
Mar 21, 2014
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Hi all.

I have an analog output signal ranging in range +/- 10V. This analog output comes from a digital to analog conversion in ADwin system Gold II (www.adwin.de). I also have another control equipment that currently has only strain gauge bridge input. I would like to convert the analog voltage +/-10V from ADwin into a bridge simulator that can be input into my second control device.

I would make as the following but I am not sure the quality if the conversion due to noise. Please let me know your point of view on this.

The output +/-10V will be fed to a voltage conversion using two resistances (R1, R2 with the condition R1/(R1+R2) = 5mV/10V = 0.0005). The voltage on R1 (in range +/-5mV) will be fed to the input pins (S+ and S-) of the amplifier. In the other hand, another dummy resistance bridge (using R3 = R4 = R5 = R6 = 350 Ohm) to will be connected to the amplifier like a strain gauge bridge, except the S+ and S- core of the cable is connected to the two ends of the resistance R1.

Will my conversion work?

Moreover, do you know any existing conversion for my purpose?

Thank you in advance.

Van
 
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