### Re: line level signal?

Posted:

**Sun May 17, 2009 2:18 am**Hi again Robert,

I guess i am just so used to making these kinds of design processes into formulas. Another

reason i do this is because i created a function calculator a while back that does the

math automatically. This takes some fun out of it however

For example, for the little 'rule' we have been talking about i would enter this into

the function calculator text window:

F=100

Z=600

C=5/(pi*F*Z)

and then i would highlight that text an click "In Place Eval" to evaluate those lines, and then

the answer:

C=2.65258238486492e-005

would pop up in the Output Window.

Of course with a calculator like this i could also add a line to switch to C in uf instead of Farads:

F=100

Z=600

C=5/(pi*F*Z)

C=C*1e6

and the answer comes out to:

C=26.5258238486492

after that eval.

The real beauty, or at least so i think, is that this entire text window can be saved to a file

such as:

"CouplingCapacitorCalculation.txt"

and can then be opened again anytime later just like any text file and the formula can be

run again and again.

I designed that calculator after getting frustrated with the free web calculators i had found

that just didnt quite do what i wanted them to do. Since then i have used it for many times

and have countless files now for calculating all kinds of stuff.

The main advantage for me is that i dont have to remember the formulas in my head anymore...

just open the file with the appropriate name(s).

BTW the calculator program is free for anyone to use for any length of time no matter what

they use it for. I wrote it mainly for myself but realized other people might want to do the

same thing and the other calculators dont seem to work the same way, so i decided to share

it with the public.

For those who program, the calculator is also set up as an API of sorts, or similar to a 'service'

in that it can be called from other programs written in several languages and it will do just

about any calculation you can imagine. My latest version even solves differential equations.

I guess i am just so used to making these kinds of design processes into formulas. Another

reason i do this is because i created a function calculator a while back that does the

math automatically. This takes some fun out of it however

For example, for the little 'rule' we have been talking about i would enter this into

the function calculator text window:

F=100

Z=600

C=5/(pi*F*Z)

and then i would highlight that text an click "In Place Eval" to evaluate those lines, and then

the answer:

C=2.65258238486492e-005

would pop up in the Output Window.

Of course with a calculator like this i could also add a line to switch to C in uf instead of Farads:

F=100

Z=600

C=5/(pi*F*Z)

C=C*1e6

and the answer comes out to:

C=26.5258238486492

after that eval.

The real beauty, or at least so i think, is that this entire text window can be saved to a file

such as:

"CouplingCapacitorCalculation.txt"

and can then be opened again anytime later just like any text file and the formula can be

run again and again.

I designed that calculator after getting frustrated with the free web calculators i had found

that just didnt quite do what i wanted them to do. Since then i have used it for many times

and have countless files now for calculating all kinds of stuff.

The main advantage for me is that i dont have to remember the formulas in my head anymore...

just open the file with the appropriate name(s).

BTW the calculator program is free for anyone to use for any length of time no matter what

they use it for. I wrote it mainly for myself but realized other people might want to do the

same thing and the other calculators dont seem to work the same way, so i decided to share

it with the public.

For those who program, the calculator is also set up as an API of sorts, or similar to a 'service'

in that it can be called from other programs written in several languages and it will do just

about any calculation you can imagine. My latest version even solves differential equations.