"Resistance multiplier"

[Astrolite]

Hi,

I'm building a flight yoke out of a 'gunners power control' yoke from a M48
tank.
Unfortunately, I had to use 2Kohm potentiometers, because they were the only
ones that would fit/were available
This gives me a lousy axis resolution, as joysticks normally use 100K pots
So I need a relatively simple circuit that, using the 2K pots, will give me
a resistance of 0-100K

note: the potentiometers control the discharge of a capacitor (timer
circuit) in the sound card

any help would be greatly appreciated

 

[John Fields]

On Tue, 29 Jun 2004 00:08:53 +0200, "Astrolite" <painma+@+online.no>
wrote:

Hi,

I'm building a flight yoke out of a 'gunners power control' yoke from a M48
tank.
Unfortunately, I had to use 2Kohm potentiometers, because they were the only
ones that would fit/were available
This gives me a lousy axis resolution, as joysticks normally use 100K pots
So I need a relatively simple circuit that, using the 2K pots, will give me
a resistance of 0-100K

note: the potentiometers control the discharge of a capacitor (timer
circuit) in the sound card

---
Increase the capacitance of the caps fifty-fold.

--
John Fields

 

[Roy McCammon]

Astrolite wrote:

Hi,

I'm building a flight yoke out of a 'gunners power control' yoke from a M48
tank.
Unfortunately, I had to use 2Kohm potentiometers, because they were the only
ones that would fit/were available
This gives me a lousy axis resolution, as joysticks normally use 100K pots
So I need a relatively simple circuit that, using the 2K pots, will give me
a resistance of 0-100K

note: the potentiometers control the discharge of a capacitor (timer
circuit) in the sound card

any help would be greatly appreciated

you may be able to use a gyrator circuit to do that.
Depends on dc levels, power usage, etc.


--
local optimization seldom leads to global optimization

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