> Hello,

In the Electronics Club of our university, we are weekly solving

several problems at our meetings. But this time, noone could solve

this problem.

http://it.isikun.edu.tr/tango/electronics/circuit.jpg
If anyone is able to solve this, we would be grateful because many

friends of mine are on the job but still no solutions available.

(although there are speculations about the solution).

Thank you very much,

Electronics Club

20K and 10K off 30V puts the non-inverting (plus bit) at 10V. That's Mr Ohms

law. V = IR. 30 volts across 20K plus 10K iz 30 volts across 30K which gives

a whole 1mA of current. 1mA of current through a 10K resistor gives 10 of

the volts.

Mr 10uF capacitor blocks the DC path to Mr V1 so Mr 77K does not enter into

the DC party.

Mr Op-amp sticks his output so that his inputs (plus and minus bits) sit at

the same volts. Mr other 10uF capacitor blocks the DC yellow brick road to

Mr V2 so Mr Op-amp can stick his minus bit the same as his plus bit without

driving current through his 100K feedback resistor bit.

No current times 100K is no volts. So Mr Op-amp sticks his output at 10 of

the volts.

If Mr V1 goes for a wobble then his 10uF friend couples his wobble to Mr 77K

resistor.

If Bill is the 20K resistor and Ben is the 10K resistor then they find their

way to Ground and become parallel with a value of (Bill x Ben)/(Bill + Ben).

That's because Mr Bill might be connected to 30V..... but 30V is a voltage

source connected to ground. Voltage sources have no Bill or Ben.

Try it like this.

Call Martha a volt and let her wiggle her ass across Bill. The sexual

excitement, current, for Bill is Martha/Bill. Now we are probably talking a

bit of face sitting or getting into oral sex here.......

Since Martha is a woman she can multitask and wiggle her volt over Ben at

the same time. That gives a Martha/Ben.

The total sexual excitement is Martha/Bill + Martha/Ben. Cross pollinate and

you get.... Martha x Ben/Bill x Ben + Martha x Bill/ Bill x Ben which

makes....

(Martha x Ben + Martha x Bill)/(Bill x Ben) is the current

Extract a Martha and

Martha x (Ben + Bill)/(Bill x Ben) is the current......

Obviously Martha has a strapon and Bill and Ben are begging for it.

I think I've lost the plot here....

DNA