d123
Advanced Member level 5
Hi,
I've been doing a little searching for an op amp division circuit that has a numerator and a denominator and a "result" output. All I've found so far are things related to log anti-log circuits and this block diagram (it's the 'a' picture) and a multiplier/divider in the Op Amp Circuit Collection AN-31 (aka snla140c), neither are particularly what I am looking for.
The AN-31 multiplier/divider circuit seems to require (a*b)/c = d. I only want/need a/b = c and do not wish to modify a circuit to fit figure 70 as simulations are promising for my needs, so I do not want to stray from where I've reached so far in the design.
By any small chance is anyone familiar with an op amp-based circuit that meets this specific requirement? Or, worst case, to an experienced eye, does figure 70 look adaptable with a bit of patient tinkering? Or, is it theoretically as simple as making the input to 'e2' 0V i.e. (e1*(e2 = 0V))/e3 = eOut?
Thanks.
I've been doing a little searching for an op amp division circuit that has a numerator and a denominator and a "result" output. All I've found so far are things related to log anti-log circuits and this block diagram (it's the 'a' picture) and a multiplier/divider in the Op Amp Circuit Collection AN-31 (aka snla140c), neither are particularly what I am looking for.
The AN-31 multiplier/divider circuit seems to require (a*b)/c = d. I only want/need a/b = c and do not wish to modify a circuit to fit figure 70 as simulations are promising for my needs, so I do not want to stray from where I've reached so far in the design.
By any small chance is anyone familiar with an op amp-based circuit that meets this specific requirement? Or, worst case, to an experienced eye, does figure 70 look adaptable with a bit of patient tinkering? Or, is it theoretically as simple as making the input to 'e2' 0V i.e. (e1*(e2 = 0V))/e3 = eOut?
Thanks.
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