Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
sir I have need it with op amp.Not sure if it's one or two sensors, but I would not bother with the shunt approach. Use one of these: https://www.pololu.com/product/2199 The output is inherently isolated.
when invereter on current flow clock wise & when charging on current flow anticlock wise.In your schematic, why are both inputs of both opamps connected to the same point?
yes sir too complicated ,You're making it far too complicated - use a single opamp and bias it so zero current gives half voltage out, current one way will increase the voltage, current the other way will decrease it - one opamp, one adc, a little simple maths, no problem.
The output of the opamp will be a negative voltage in the cct you provided. The positive reference voltage should be connected to the +ve input of the opamp.Assume: ADC range is 0 to 1V
Assume:Vref=1V
Want to measure +/- current.
(I think a gain of 100 is too large but)
R12 and R13 (2k and 2k) look like a 1k to 1/2 of Vref. (1k to 0.5V)
The amp has a gain of 100x. So a +/- 5mV signal will make a +/-500mV signal centered around 0.5V.
View attachment 89230
u tell me like thisYes Yes what was I thinking? Thank you Dougy83
View attachment 89233
I think it's better to do it as shown in the following circuit. Zero amps gives ~2.5V out, -50 A --> 5 V out and +50 A --> 0 V out. Gain can be changed by changing R1.Yes Yes what was I thinking? Thank you Dougy83
View attachment 89233
I think it's better to do it as shown in the following circuit. Zero amps gives ~2.5V out, -50 A --> 5 V out and +50 A --> 0 V out. Gain can be changed by changing R1.
View attachment 89239
whats the EQUATION of this sch ?