# Challenging Circuit

#### parshu_hotkar

Joined Oct 30, 2005
2
Hi ! I have a Challenging Circuit quetion!

Design a circuit 4 measuring speed of walking man .
No ICs r allowed.Use only simple components!

W'll se how many of u can solve this problem!

#### pebe

Joined Oct 11, 2004
626
Originally posted by parshu_hotkar@Oct 30 2005, 11:43 AM
Hi ! I have a Challenging Circuit quetion!

Design a circuit 4 measuring speed of walking man .
No ICs r allowed.Use only simple components!

W'll se how many of u can solve this problem!

[post=11356]Quoted post[/post]​
R U allowed 2 use any 4mula 4 the design

#### n9352527

Joined Oct 14, 2005
1,198
Originally posted by parshu_hotkar@Oct 30 2005, 11:43 AM
Hi ! I have a Challenging Circuit quetion!

Design a circuit 4 measuring speed of walking man .
No ICs r allowed.Use only simple components!

W'll se how many of u can solve this problem!

[post=11356]Quoted post[/post]​
What do we get if we can solve it?

#### parshu_hotkar

Joined Oct 30, 2005
2
Originally posted by pebe@Oct 30 2005, 07:28 PM
R U allowed 2 use any 4mula 4 the design
[post=11357]Quoted post[/post]​

[violet]Yes, u can use 4mula!

#### mozikluv

Joined Jan 22, 2004
1,435
hello

is this your way of asking for a schem of that circuit function? since no ic will be used then its discrete parts that has to be employed which translates to time and effort of designing that circuitry. so what do we get from this?

moz

#### n9xv

Joined Jan 18, 2005
329
I charge \$200 / day plus expenses.

#### Overclocked2300

Joined Apr 24, 2005
124
Is breakfast included? What about beautiful women?

#### Firestorm

Joined Jan 24, 2005
353
What happened to doing this out of the goodness in your hearts . lol, whats the point of this, to waste time to complish nothing for a cause or contest in which hardly anyone is competing in? Sorta confused on this purpose?

-fire

#### mozikluv

Joined Jan 22, 2004
1,435
Originally posted by Firestorm@Nov 7 2005, 11:20 PM
What happened to doing this out of the goodness in your hearts . lol, whats the point of this, to waste time to complish nothing for a cause or contest in which hardly anyone is competing in? Sorta confused on this purpose?

-fire
[post=11507]Quoted post[/post]​
hi fire,

don't get confused. remember this is a homework forum. we can only guide and let the person do somemore research so he could fully grasp the function of each part. and another thing the circuit is not an off-the shelf circuit design. :lol:

moz

#### Brandon

Joined Dec 14, 2004
306
Sounds like a little mini project for school..

hmmm... try thinking out of the box?

For instance, spool of thread attached to the ground at reference point, spool its part of the circuit. Make some form of mechanical switch (like brushes in a DC motor) as part of the spool. As the thread is pulled off of it, it will spin and you can use a fairly simple difference amplifier setup with a few transistors to cause a led to flicker. Its rate of flicker is proportional to the speed of the spinning spool = walking speed.

#### Firestorm

Joined Jan 24, 2005
353
O I gotcha, I was skimming it a lil' too quickly. Wish I had time to try out some circuits again, school work sucks! Thanks for the clarification.