ANODE RESISTOR
Hi,
It will be inductive and as such be non-linear.
47K is such a common value that you may find it around the corner.
Better take a 1W metalfilm.
Cheers,😉
Hi,
It will be inductive and as such be non-linear.
47K is such a common value that you may find it around the corner.
Better take a 1W metalfilm.
Cheers,😉
I have put two choked psu's on my webserver so you can have a look at them. Please tell me what you think, and also tell me how to improve it.
http://213.67.45.70/no_ripple.psu
http://213.67.45.70/no_ripple2.psu
I haven't taken my need for 400V into consideration, I just wanted to test how much a choke could filter my psu. And the results are breathtaking if you ask me.
http://213.67.45.70/no_ripple.psu
http://213.67.45.70/no_ripple2.psu
I haven't taken my need for 400V into consideration, I just wanted to test how much a choke could filter my psu. And the results are breathtaking if you ask me.
Re: ANODE RESISTOR
Frank,
Not wanting to split hairs, but an inductive resistor is not necessarily non-linear. Its impedance does change with frequency, but ususally this is a linear change. I mean, all resistors have a tempco, which means the resistance changes with temperature, in a linear fashion.
Jan Didden
fdegrove said:
Frank,
Not wanting to split hairs, but an inductive resistor is not necessarily non-linear. Its impedance does change with frequency, but ususally this is a linear change. I mean, all resistors have a tempco, which means the resistance changes with temperature, in a linear fashion.
Jan Didden
Split the hairs even further..
Most film resistors are inductive too. That's why one of the few sanctuarys left for the carbon composition resitor is RF circuitry.🙂
Most film resistors are inductive too. That's why one of the few sanctuarys left for the carbon composition resitor is RF circuitry.🙂
Re:Splitting hair.
Hi,
Now I know where that noise comes from.😀
Seriously,carbon comp is not inductive?
I didn't know that.
Cheers,😉
Hi,
Now I know where that noise comes from.😀
Seriously,carbon comp is not inductive?
I didn't know that.
Cheers,😉
Mikael,
Bottom line...use the 10watt resistor...until you run into some nice riken ohm, kiwame, mills or dale ns, and just solder the little buggers in and tell us if you heard a difference!
Cheers,
Bas
Bottom line...use the 10watt resistor...until you run into some nice riken ohm, kiwame, mills or dale ns, and just solder the little buggers in and tell us if you heard a difference!
Cheers,
Bas
Carbon composition resistors
Frank,
If you're in a definite and black & white answers mood, of course.
They are as inductive as the wire connecting them (length for length).
This leads😀 to a resonant frequency of about 4GHz - 10GHz.
Now, my hearing doesn't quite reach that far😀 but maybe yours does😀
Am I worried😎
Just don't put one in your microwave oven!😀
Cheers,
Frank,
If you're in a definite and black & white answers mood, of course.
They are as inductive as the wire connecting them (length for length).
This leads😀 to a resonant frequency of about 4GHz - 10GHz.
Now, my hearing doesn't quite reach that far😀 but maybe yours does😀
Am I worried😎
Just don't put one in your microwave oven!😀
Cheers,
10watt WW in anode
In all seriousness, IMO this is not desirable in the long term.
In the short term, it'll probably be fine.
If you hear any radio stations in the background, you'll know it's time to change it.😀
Cheers,
In all seriousness, IMO this is not desirable in the long term.
In the short term, it'll probably be fine.
If you hear any radio stations in the background, you'll know it's time to change it.😀
Cheers,
I know that this thread has moved passed this now but for the future: A choke is a term designated to an inductor operating with a DC bias current. The "inductors" used as output filters in switching power supplies are actually chokes because they operate with a DC bias and filter ripple current.
BeanZ
BeanZ
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