From: Searcher7@mail.con2.com   
      
   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.   
      
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