Magura, you may kindly send it to me, if you can find it.
Thx. for explanation ZenMod ... Anyway, i see 1/0,8 is ~ 1,25 Ohm, impedance ... but what is mS in this case ... impedance resistance or what ? (thought it was something with time) ...
If mS is some freq./sec. thing please explain to me then.
Well regarding the nice spreadsheet, where should i put in the value's then (my inductor resistance + 10 Ohm * 2 pcs. as i see it) ...
Jesper.
Thx. for explanation ZenMod ... Anyway, i see 1/0,8 is ~ 1,25 Ohm, impedance ... but what is mS in this case ... impedance resistance or what ? (thought it was something with time) ...
If mS is some freq./sec. thing please explain to me then.
Well regarding the nice spreadsheet, where should i put in the value's then (my inductor resistance + 10 Ohm * 2 pcs. as i see it) ...
Jesper.
lykkedk said:Magura, you may kindly send it to me, if you can find it.
Thx. for explanation ZenMod ... Anyway, i see 1/0,8 is ~ 1,25 Ohm, impedance ... but what is mS in this case ... impedance resistance or what ? (thought it was something with time) ...
If mS is some freq./sec. thing please explain to me then.
Well regarding the nice spreadsheet, where should i put in the value's then (my inductor resistance + 10 Ohm * 2 pcs. as i see it) ...
Jesper.
How about this: Transconductance is measured in Siemens, so "mS" would be the equivalent of milli-Siemens.
I will send the inductor calculator to you, the very minute you give me a place to send it to. Gmail is not an option, when it comes to .exe files.
Magura
Magura said:
.....Gmail is not an option, when it comes to .exe files.
Magura
zip it , rar it , gz it , tar it ........ whatever
Zen Mod said:dirty pic
You're the poof.
i used to watch the Cavandoli cartoons every week on tv, +30 years ago, that stuff is really ageless.
DIRTY Hungarian not good enuff for ya ?
Jesper,
do you realise the simularity between capacitance Farad and transconductance Siemens ?
Jesper,
do you realise the simularity between capacitance Farad and transconductance Siemens ?
No not really ... But i donno what i was thinking, i knew that Siemens was the opposite of ohm ... but the xtransdutance thing confused me here
I was not thinking of Siemens at all, i was focused on the mS, and i thought it was something seconds/timing/freq.
Well i still don't know howto calculate the F3 / rolloff whatever .. but i got a nice spreadsheet, with plateresistance (i need coil resistance) I guess that i could, if i was knowing all this calculate it, but i am not that much into electronics. I now know, that i must include the 10ohm source resistor, but must i calculate both half of the coil(2*~80mH) + 2*10 ohm ??? --- As i see it, i only need to calculate on half (1*~80mH + 10ohm) Am i right ?
Jesper.
lykkedk said:
No not really ... But i donno what i was thinking, i knew that Siemens was the opposite of ohm ... but the xtransdutance thing confused me here
I was not thinking of Siemens at all, i was focused on the mS, and i thought it was something seconds/timing/freq.
Well i still don't know howto calculate the F3 / rolloff whatever .. but i got a nice spreadsheet, with plateresistance (i need coil resistance) I guess that i could, if i was knowing all this calculate it, but i am not that much into electronics. I now know, that i must include the 10ohm source resistor, but must i calculate both half of the coil(2*~80mH) + 2*10 ohm ??? --- As i see it, i only need to calculate on half (1*~80mH + 10ohm) Am i right ?
Jesper.
apparent mosfet resistance (impedance ) + source resistor = plate resistance in that spreadsheet
you need to calculate just one side - taking in account just one half of choke ;
remember - you can use drek both balanced or unbalanced
jacco vermeulen said:
You're the poof.
i used to watch the Cavandoli cartoons every week on tv, +30 years ago, that stuff is really ageless.
DIRTY Hungarian not good enuff for ya ?
Jesper,
do you realise the simularity between capacitance Farad and transconductance Siemens ?
yup
hungarian cartoon with serbian subtitle
Professor ZMuck,
why don't you give a full lecture ?
Some folks may not have the death wish to build Drek but are eager to learn something.
(the hard way to pick your brain is coming over with a cranial saw, a crepes pan, a bottle of Cointreau and pretend it's chicken)
Hungarian/Croatian/Serbian, it's all gulash, like asking a Belgian why he ate the frog.
why don't you give a full lecture ?
Some folks may not have the death wish to build Drek but are eager to learn something.
(the hard way to pick your brain is coming over with a cranial saw, a crepes pan, a bottle of Cointreau and pretend it's chicken)
Hungarian/Croatian/Serbian, it's all gulash, like asking a Belgian why he ate the frog.
apparent mosfet resistance (impedance ) + source resistor = plate resistance in that spreadsheet
you need to calculate just one side - taking in account just one half of choke ;
remember - you can use drek both balanced or unbalanced
Yep.. very good, when putting in 10R + 1/0,1 (~120mA) the rolloff is 40Hz .. That's near the goal, but if i have an inductor of ~0,08H (80mH), with a DCR=35R, soo where should i put that resistance in ???'
Jesper.
lykkedk said:
Yep.. very good, when putting in 10R + 1/0,1 (~120mA) the rolloff is 40Hz .. That's near the goal, but if i have an inductor of ~0,08H (80mH), with a DCR=35R, soo where should i put that resistance in ???'
Jesper.
Make sure you got coffee and cake ready this Friday afternoon
Magura
lykkedk said:God damn Magura... I am in Copenhagen Friday-Sunday... Visit some freinds overthere ...
Jesper.
So are we, hence the thought to drop by on the way
Magura
lykkedk said:Cool ... we can go to Cviller's new house and have some , while discussing xtransductance, and other Serbian stuff
Jesper.
Not happening. The granpa of Mrs. Magura turns 90 Saturday, so my time in Copenhagen is spoken for.
Magura
I finally got it (Thx Magura for calling me on landline) ... all the time i thought that the coilresistance was the thing to include into my F3 calc. , but the matter, that i only need to include the transductance of the mosfet, at the given mA + sourcerestiance, gives me the calc now.
Thanks all for helping me out.
I finally got the inductor.exe program to work (The link i placed earlier is right) .. on a Linux-dosemu program.
The results, are simmulair, compared to the onlinecalculator.
Only thing is, that the lenght-meassure in onlineprogram, is called height in the DOS inductor.exe program...
See here:
Thanks all for helping me out.
I finally got the inductor.exe program to work (The link i placed earlier is right) .. on a Linux-dosemu program.
The results, are simmulair, compared to the onlinecalculator.
Only thing is, that the lenght-meassure in onlineprogram, is called height in the DOS inductor.exe program...
See here:
Attachments
lykkedk said:I finally got it (Thx Magura for calling me on landline) ... all the time i thought that the coilresistance was the thing to include into my F3 calc. , but the matter, that i only need to include the transductance of the mosfet, at the given mA + sourcerestiance, gives me the calc now.
......
and - did you learn something ?
now - go back several posts in thread and re-read ; you'll see what was all the time exactly written .......
jacco vermeulen said:Question is if a 2 buck NOS 0.5A dual ring core choke wouldn't do the job just as well ?
data ?
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