Thanks for your reply Warspeed.

Im beginning to realize just how nasty, and potentially unstable, it really is, but like I said, my knowledge of electronics is extremely basic! I fiddled with circuits as a kid and learned a thing or two from my grandfather. The textbooks Ive located in the campus library and have been reading, have all been published between 1956 till late 1970's, half of them still refer to valves The first time I read about a 4 quadrant multiplier was in this thread.

ummmm, you lost me!
Would, say dy be connected to the opamp, dx be connected to one of the multiplier inputs, the other multiplier input connected to the output of the opamp, and the multiplier output fed back into the opamp?

what configuration would I use the opamp in? inverting or non-inverting? would it be considered positive or negative feedback?

 

Hyperionza,

Look up the link I provided to the Texas Instruments multiplier/divider.
Click on "download data sheet".

Scroll down to page 9 and the "division" function.

It is basically designed to be an analog multiplier, but can also be configured to produce division, square, and square root functions by suitably connecting the three inputs, and provision of suitable feedback.

Everything you need is all there for division, you just need to connect it up as shown.

It has a multiplier followed by the required amplifier (Z input).

 

<sheepish expression> I did download and read it... I just didnt get that far. Thats the 2nd or 3rd time Ive done that recently next time I guess should finish reading before I ask stupid questions again. I got lost way before 'Typical Performance Curves' so I stopped there thinking the rest of the datasheet would be more of the same.

Thanks again Warspeed!

 

Sorry, entirely my error.

I knew exactly what I was looking for, so held my breath and dived deep straight down to page nine.
Should have given you a lot more guidance of where to look.

Cheers..........

 

MPY100 is obsolete, and has been replaced by MPY634. In a previous post, I had recommended AD633. I have not used either one.

__________________
Ron

 

I don't think Hyperionza actually plans to build this, just explore and research the techniques required to do it.