Floating simulator circuits using CMOS VDTA

[mac]

An article about floating simulator circuits using CMOS VDTA.
I thought it could be of some interest to those who know what the heck is a VDTA

http://nopr.niscair.res.in/bitstream/123456789/28850/1/IJPAP%2052(6)%20423-428.pdf

Indian Journal of Pure and Applied Physics, Vol 52, June 2104, pp 423-428

mac

[R.G.]

Nice!

Where can I get some? Do the come in an 8-pin DIP?

[~arph]

Indian Journal of Pure and Applied Physics, Vol 52, June 2104, pp 423-428

Where can I get some? Do the come in an 8-pin DIP?

You can't it's from the not so near future 

[mac]

Where can I get some? Do the come in an 8-pin DIP?

You can't it's from the not so near future

It's only 18 Mosfets if you want to build your own

or two OTAs

http://csikor.tmit.bme.hu/Proceedings/RNDM2012/papers/1569641007.pdf

Fig. 2

mac

[PRR]

Something wrong with the scale-factors on Fig 6 and Fig 7.

But guessing what is meant, looks like 0.017H-- cap value unknown? A tunable 17mH coil is not to be sneezed at; but there is often a non-coil way to do it.

Looks like the old-old '3080 can be made to work (ah, Mac said that), though scaling may be awkward, input bias is annoying, and maximum voltage across the "coil" can only be dozens of mV. (A handful of tubes can do some better.) Voltage-variable transconductance is often imperfect like that.