Author: randomnameDate: 14:32 25-08-06
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I know resistors in series simply add up... but is there any way to
mulitply resistance?
eg: can I take a 10k pot and make it work as if it were a 100k pot?
Thanks,
-sam
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Author: Don McKenzieDate: 16:03 25-08-06
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Author: John FieldsDate: 17:19 25-08-06
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On 25 Aug 2006 11:32:20 -0700, "randomname"
<randomname12345@gmail.com> wrote:
>I know resistors in series simply add up... but is there any way to
>mulitply resistance?
>
>eg: can I take a 10k pot and make it work as if it were a 100k pot?
---
Sure.
You could use a 10k pot to drive a servo which would turn the 100k
pot degree for degree with the 10k pot.
What do you have in mind?
--
John Fields
Professional Circuit Designer
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Author: phaetonDate: 17:49 25-08-06
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John Fields wrote:
>
> You could use a 10k pot to drive a servo which would turn the 100k
> pot degree for degree with the 10k pot.
>
> What do you have in mind?
Or even using the 10k to control a 100k digital pot? Or even just a
FET?
-phaeton
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Author: randomnameDate: 22:42 25-08-06
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> >eg: can I take a 10k pot and make it work as if it were a 100k pot?
>
> ---
> Sure.
>
> You could use a 10k pot to drive a servo which would turn the 100k
> pot degree for degree with the 10k pot.
>
> What do you have in mind?
>
> --
> John Fields
> Professional Circuit Designer
well im still dwelling over what a 555 timer can do. id like to have 2
pots... 1 to adjust the duty cycle (without changing the frequency),
and another to adjust the frequency.
-sam
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Author: JamieDate: 00:30 26-08-06
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randomname wrote:
> I know resistors in series simply add up... but is there any way to
> mulitply resistance?
>
> eg: can I take a 10k pot and make it work as if it were a 100k pot?
>
> Thanks,
> -sam
>
the pot could bias a MosFet to be used as a v-r.
--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
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Author: John FieldsDate: 07:08 26-08-06
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On 25 Aug 2006 19:42:29 -0700, "randomname"
<randomname12345@gmail.com> wrote:
>> >eg: can I take a 10k pot and make it work as if it were a 100k pot?
>>
>> ---
>> Sure.
>>
>> You could use a 10k pot to drive a servo which would turn the 100k
>> pot degree for degree with the 10k pot.
>>
>> What do you have in mind?
>>
>> --
>> John Fields
>> Professional Circuit Designer
>
>well im still dwelling over what a 555 timer can do. id like to have 2
>pots... 1 to adjust the duty cycle (without changing the frequency),
>and another to adjust the frequency.
---
I don't think you can do that with a single 555 but it's easy with
two. Want a schematic?
--
John Fields
Professional Circuit Designer
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Author: randomnameDate: 17:44 26-08-06
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John Fields wrote:
> On 25 Aug 2006 19:42:29 -0700, "randomname"
> <randomname12345@gmail.com> wrote:
>
> >> >eg: can I take a 10k pot and make it work as if it were a 100k pot?
> >>
> >> ---
> >> Sure.
> >>
> >> You could use a 10k pot to drive a servo which would turn the 100k
> >> pot degree for degree with the 10k pot.
> >>
> >> What do you have in mind?
> >>
> >> --
> >> John Fields
> >> Professional Circuit Designer
> >
> >well im still dwelling over what a 555 timer can do. id like to have 2
> >pots... 1 to adjust the duty cycle (without changing the frequency),
> >and another to adjust the frequency.
>
> ---
> I don't think you can do that with a single 555 but it's easy with
> two. Want a schematic?
>
>
> --
> John Fields
> Professional Circuit Designer
absolutely!
thanks,
-sam
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