Re: So tell us more. . .
just google for "lalena online calc"
it's good enough
zettelsm said:
just google for "lalena online calc"
it's good enough
Inductor DIY
Thank you, ZM. Good calculator. However I was hoping for some application background, like (electrical) size and what other factors would be important for power supply inductors -- like for the Pumpkin-Shunty for example.
Or your own tube preamp. . .
😀
Thanks,
Steve Z
Zen Mod said:
Thank you, ZM. Good calculator. However I was hoping for some application background, like (electrical) size and what other factors would be important for power supply inductors -- like for the Pumpkin-Shunty for example.
Or your own tube preamp. . .
😀
Thanks,
Steve Z
Re: Inductor DIY
in most cases just mileage (xperience) can tell what is right mix of L/Rdc/cost/dimensions you'll choose
usually :
L - more - the merrier
Rdc - depending of overall I your circ is sucking , sometimes you want to burn few V more in choke itself etc ....... but without overheating it
and - overheating is directly related to -cost- and -dimensions- , which we usually want to keep veeeeeeery low . both of them 😉
anyway - Magura-san is man of big words (mouth?) and big chokes ; probably just because he just don't have small machines for winding , so he just must use big cores/formers and thick wire
in any case - if you are cheapskate as I am , you'll find as much you can old xformers and use them for winding ;
I wrote numerous times exact recipe how to make nice little 8-10mH choke for CLC filters , good up to 5-6 amps......
anyway - just shoot with exact question and I'm sure that someone will be smart enough to write few words as answer ........
edit:
big currents (say above 500mA ) - think in mHenries
small currents (say below 500mA ) - think in Henries
zettelsm said:
in most cases just mileage (xperience) can tell what is right mix of L/Rdc/cost/dimensions you'll choose
usually :
L - more - the merrier
Rdc - depending of overall I your circ is sucking , sometimes you want to burn few V more in choke itself etc ....... but without overheating it
and - overheating is directly related to -cost- and -dimensions- , which we usually want to keep veeeeeeery low . both of them 😉
anyway - Magura-san is man of big words (mouth?) and big chokes ; probably just because he just don't have small machines for winding , so he just must use big cores/formers and thick wire
in any case - if you are cheapskate as I am , you'll find as much you can old xformers and use them for winding ;
I wrote numerous times exact recipe how to make nice little 8-10mH choke for CLC filters , good up to 5-6 amps......
anyway - just shoot with exact question and I'm sure that someone will be smart enough to write few words as answer ........
edit:
big currents (say above 500mA ) - think in mHenries
small currents (say below 500mA ) - think in Henries
Re: Re: So tell us more. . .
I don't agree. Lalena is not optimized. You get higher DCR and spend way too much copper.
Magura 🙂
Zen Mod said:
I don't agree. Lalena is not optimized. You get higher DCR and spend way too much copper.
Magura 🙂
Re: Inductor DIY
Give me some specs to meet, and I'll tell you how to meet them 😎
Magura 🙂
zettelsm said:
Give me some specs to meet, and I'll tell you how to meet them 😎
Magura 🙂
Re: Re: Inductor DIY
Thanks Mr. Magura -- that is the problem though, I am too dumb to know what specs are important right now (DCR obviously) or what kind of mH makes sense for I and E of a given power supply.
What I would like to do is wind myself some inductors to use with the Pumpkin Shunty preamp. Longer term, I would like to learn enough so that I can properly size and build inductors for tube power supplies. . .
I dont want someone to just give me the answer, I would like to learn how to figure out the answer myself.
Steve Z
Magura said:
Thanks Mr. Magura -- that is the problem though, I am too dumb to know what specs are important right now (DCR obviously) or what kind of mH makes sense for I and E of a given power supply.
What I would like to do is wind myself some inductors to use with the Pumpkin Shunty preamp. Longer term, I would like to learn enough so that I can properly size and build inductors for tube power supplies. . .
I dont want someone to just give me the answer, I would like to learn how to figure out the answer myself.
Steve Z
@zettelsm :
if you already didn't , go to www.duncanamps.com and download PSUD
play and learn ;
then - with few occasional questions , you'll be able to make things
btw - for Pumpshe - anything as choke will suffice , with Rdc not greater than -say-10 ohms
if you already didn't , go to www.duncanamps.com and download PSUD
play and learn ;
then - with few occasional questions , you'll be able to make things
btw - for Pumpshe - anything as choke will suffice , with Rdc not greater than -say-10 ohms
Zen Mod said:@zettelsm :
if you already didn't , go to www.duncanamps.com and download PSUD
play and learn ;
then - with few occasional questions , you'll be able to make things
btw - for Pumpshe - anything as choke will suffice , with Rdc not greater than -say-10 ohms
Thank you, ZM. I will go and do my homework. . .
Steve Z
😱
jacco vermeulen said:
me too (I'm probably Sioux ) , but who cares ........
wise man have simple tactics - embrace every Holiday ..........
btw. talking about posting nude pics of multilegged fuses all around , which is fave dutchie national sport , I have just one line , illustrated :
(lookie what's name of da pic )
(lookie what's name of da pic )
jacco vermeulen said:
enlighten moi ; ya know that I'm Dumbo , regarding all these lingualanguini sheherezades ........
