1
\$\begingroup\$

img

I found this on IEEE's page: https://sscs.ieee.org/education/2017-2018-circuit-analysis-design-contest

Is there a name for this circuit or even does this circuit exist? If so, why and what is the circuit structure?

\$\endgroup\$
  • 3
    \$\begingroup\$ It wouldn't be much of a design contest if it already had a name and you could look it up on the web. \$\endgroup\$ – Chu Dec 18 '17 at 9:22
  • \$\begingroup\$ Something which adds is an add-er, subtract is a subtract-er/-or. Multiply : multiply-er (Which in English becomes -ier). So following that logic, this must be a Sinus-er or a Sinus-or. \$\endgroup\$ – Oldfart Dec 18 '17 at 11:09
  • 1
    \$\begingroup\$ @Chu: Not necessarily. A contest could be about extreme specs for a common function. See Google's contest for small and efficient inverter as example. You could have a contest for something as simple as a buck converter to make 5 V at 1 A from 24 V, with the distinguishing characteristic being the highest efficiency wins. A contest does not mean obscure requirements by itself. \$\endgroup\$ – Olin Lathrop Dec 18 '17 at 12:52
  • \$\begingroup\$ could call ir a "sinner" \$\endgroup\$ – Jasen Dec 18 '17 at 23:46
  • \$\begingroup\$ Note that you made this requirement up yourself. Nowhere does the contest mention that it must be a sin(x) function. On the contrary, it is specifically mention: The characteristic need not be a sinusoidal function. \$\endgroup\$ – pipe Dec 24 '17 at 11:28
0
\$\begingroup\$

It is called a Folding Amplifier. You just need to tack on an opamp to get the 1V swing. See here.

\$\endgroup\$
1
\$\begingroup\$

This circuit doesn't have a standard or common name. These requirements are highly unusual. This has therefore been done so rarely, if at all, that no common name for this circuit has evolved.

\$\endgroup\$
  • \$\begingroup\$ Just curious, how would you approach such a problem statement? From zero to first peak, I can assume an op-amp but what then? \$\endgroup\$ – Whiskeyjack Dec 18 '17 at 14:10
  • 1
    \$\begingroup\$ @Whis: That's for the contestants to figure out. No, I'm not going to give any ideas. \$\endgroup\$ – Olin Lathrop Dec 18 '17 at 14:40
  • \$\begingroup\$ @ whiskeyjack, well no. the competition requires operation from a 1V supply, if any supply was allowed then yeah comparators that enable adding or subtracting from the input at each corner voltage. \$\endgroup\$ – Jasen Dec 18 '17 at 23:53
  • \$\begingroup\$ @OlinLathrop Since the contest is over can give a hint? I've built a circuit that does this function but it was huge and noisy. I don't think the solution to this problem is what I built. \$\endgroup\$ – Alper91 Jul 29 '18 at 13:03

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.