Potentiometer Project...

[Searcher7]

I\'m working on a custom project that involves potentiometers and picture adjustments on the monitor they are connected to.

To determine whether or not the potentiometers I need exist or if I need to build them, I need to resolve two questions and the possible issues they bring up.

1) This may seem like a crazy question, but are there low-friction potentiometers? (I\'m referring to the physical friction incorporated into the pot to retard motion).

The reason I ask is because I guesstimate that in an extreme case, I\'d need a potentiometer\'s knob/slide to rotate/travel it\'s full length 100 times in a single day. (Though in reality there probably wouldn\'t be that many cycles in a month).

This brings me to the second question.

2) Can a pot with a knob/slide that travels a distance of only one inch be adequate to cover the extremes for image parameters like Brightness, Contrast, Horizontal size, Horizontal position, Vertical size, & Vertical position?

To clarify my goal. I want to be able to quickly establish and lock in all six settings via mechanical means.

Springs will keep the knobs/slides at one side of their range, and when I need the correct settings, a plunger will ensure accurate re-positioning of the knobs/slides.

Thanks.

Darren Harris
Staten Island, New York.

 

[Phil Allison]

Searcher7 wrote:
=============

1) This may seem like a crazy question, but are there low-friction potentiometers?

** Yes - the \" plastic track \" types.

Both slide and rotary kinds are very softy and silky in feel.

2) Can a pot with a knob/slide that travels a distance of only one inch be adequate to cover
the extremes for image parameters like Brightness, Contrast, Horizontal size, Horizontal
position, Vertical size, & Vertical position?

** Can be done.

Now stop being so fucking mysterious and pot some actual details.



....... Phil

 

[Baron]

Searcher7 prodded the keyboard with:

I\'m working on a custom project that involves potentiometers and
picture adjustments on the monitor they are connected to.

To determine whether or not the potentiometers I need exist or if I
need to build them, I need to resolve two questions and the possible
issues they bring up.

1) This may seem like a crazy question, but are there low-friction
potentiometers? (I\'m referring to the physical friction incorporated
into the pot to retard motion).

The reason I ask is because I guesstimate that in an extreme case,
I\'d need a potentiometer\'s knob/slide to rotate/travel it\'s full
length 100 times in a single day. (Though in reality there probably
wouldn\'t be that many cycles in a month).

This brings me to the second question.

2) Can a pot with a knob/slide that travels a distance of only one
inch be adequate to cover the extremes for image parameters like
Brightness, Contrast, Horizontal size, Horizontal position, Vertical
size, & Vertical position?

To clarify my goal. I want to be able to quickly establish and lock
in all six settings via mechanical means.

Springs will keep the knobs/slides at one side of their range, and
when I need the correct settings, a plunger will ensure accurate
re-positioning of the knobs/slides.

Thanks.

Darren Harris
Staten Island, New York.

Hi Darren,
What you are asking used to be commonly done on monitor and TV
production lines, before the advent of digital circuits.


--
Best Regards:
Baron.

 

[Searcher7]

On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:

Searcher7 prodded the keyboard with:
I\'m working on a custom project that involves potentiometers and
picture adjustments on the monitor they are connected to.

To determine whether or not the potentiometers I need exist or if I
need to build them, I need to resolve two questions and the possible
issues they bring up.

1) This may seem like a crazy question, but are there low-friction
potentiometers? (I\'m referring to the physical friction incorporated
into the pot to retard motion).

The reason I ask is because I guesstimate that in an extreme case,
I\'d need a potentiometer\'s knob/slide to rotate/travel it\'s full
length 100 times in a single day. (Though in reality there probably
wouldn\'t be that many cycles in a month).

This brings me to the second question.

2) Can a pot with a knob/slide that travels a distance of only one
inch be adequate to cover the extremes for image parameters like
Brightness, Contrast, Horizontal size, Horizontal position, Vertical
size, & Vertical position?

To clarify my goal. I want to be able to quickly establish and lock
in all six settings via mechanical means.

Springs will keep the knobs/slides at one side of their range, and
when I need the correct settings, a plunger will ensure accurate
re-positioning of the knobs/slides.

Thanks.

Darren Harris
Staten Island, New York.
Hi Darren,
What you are asking used to be commonly done on monitor and TV
production lines, before the advent of digital circuits.


--
Best Regards:
Baron.

The idea is to do this mechanicaally and stay away from digital circuits.

I designed a switcher that would allow me to switch between a dozen game PCBs. All of which will individually use the same monitor.

But certain image parameters may vary from one game board to the next and it would be too much of a pain to open up the cabinet and manipulate controls on the chassis every time I needed to correct the picture. I can just connect and make them part of the mechanical switching action, which is initiated by a knob I push and turn.

If anyone has ideas on where to get sliding poteniometers I can use for thuis project, I\'d appreciated it.

Thanks.

Darren Harris
Staten Island, New York.

 

[Baron]

Searcher7 prodded the keyboard with:

On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:
Searcher7 prodded the keyboard with:
I\'m working on a custom project that involves potentiometers and
picture adjustments on the monitor they are connected to.

To determine whether or not the potentiometers I need exist or if
I need to build them, I need to resolve two questions and the
possible issues they bring up.

1) This may seem like a crazy question, but are there
low-friction potentiometers? (I\'m referring to the physical
friction incorporated into the pot to retard motion).

The reason I ask is because I guesstimate that in an extreme
case, I\'d need a potentiometer\'s knob/slide to rotate/travel it\'s
full length 100 times in a single day. (Though in reality there
probably wouldn\'t be that many cycles in a month).

This brings me to the second question.

2) Can a pot with a knob/slide that travels a distance of only
one inch be adequate to cover the extremes for image parameters
like Brightness, Contrast, Horizontal size, Horizontal position,
Vertical size, & Vertical position?

To clarify my goal. I want to be able to quickly establish and
lock in all six settings via mechanical means.

Springs will keep the knobs/slides at one side of their range,
and when I need the correct settings, a plunger will ensure
accurate re-positioning of the knobs/slides.

Thanks.

Darren Harris
Staten Island, New York.
Hi Darren,
What you are asking used to be commonly done on monitor and TV
production lines, before the advent of digital circuits.


--
Best Regards:
Baron.

The idea is to do this mechanicaally and stay away from digital
circuits.

I designed a switcher that would allow me to switch between a dozen
game PCBs. All of which will individually use the same monitor.

But certain image parameters may vary from one game board to the
next and it would be too much of a pain to open up the cabinet and
manipulate controls on the chassis every time I needed to correct
the picture. I can just connect and make them part of the
mechanical switching action, which is initiated by a knob I push and
turn.

If anyone has ideas on where to get sliding poteniometers I can use
for thuis project, I\'d appreciated it.

Thanks.

Darren Harris
Staten Island, New York.

Have you considered the motorised sliders as used on sound mixer
decks ?

--
Best Regards:
Baron.

 

[Searcher7]

On Sunday, November 21, 2021 at 3:02:54 PM UTC-5, Baron wrote:

Searcher7 prodded the keyboard with:

On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:
Searcher7 prodded the keyboard with:
I\'m working on a custom project that involves potentiometers and
picture adjustments on the monitor they are connected to.

To determine whether or not the potentiometers I need exist or if
I need to build them, I need to resolve two questions and the
possible issues they bring up.

1) This may seem like a crazy question, but are there
low-friction potentiometers? (I\'m referring to the physical
friction incorporated into the pot to retard motion).

The reason I ask is because I guesstimate that in an extreme
case, I\'d need a potentiometer\'s knob/slide to rotate/travel it\'s
full length 100 times in a single day. (Though in reality there
probably wouldn\'t be that many cycles in a month).

This brings me to the second question.

2) Can a pot with a knob/slide that travels a distance of only
one inch be adequate to cover the extremes for image parameters
like Brightness, Contrast, Horizontal size, Horizontal position,
Vertical size, & Vertical position?

To clarify my goal. I want to be able to quickly establish and
lock in all six settings via mechanical means.

Springs will keep the knobs/slides at one side of their range,
and when I need the correct settings, a plunger will ensure
accurate re-positioning of the knobs/slides.

Thanks.

Darren Harris
Staten Island, New York.
Hi Darren,
What you are asking used to be commonly done on monitor and TV
production lines, before the advent of digital circuits.


--
Best Regards:
Baron.

The idea is to do this mechanicaally and stay away from digital
circuits.

I designed a switcher that would allow me to switch between a dozen
game PCBs. All of which will individually use the same monitor.

But certain image parameters may vary from one game board to the
next and it would be too much of a pain to open up the cabinet and
manipulate controls on the chassis every time I needed to correct
the picture. I can just connect and make them part of the
mechanical switching action, which is initiated by a knob I push and
turn.

If anyone has ideas on where to get sliding poteniometers I can use
for thuis project, I\'d appreciated it.

Thanks.

Darren Harris
Staten Island, New York.
Have you considered the motorised sliders as used on sound mixer
decks ?

--
Best Regards:
Baron.

No. I have no idea what that is, but if they are motorized they wouldn\'t work for me.

Darren Harris
Staten Island, New York.