From: Searcher7@mail.con2.com   
      
   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.   
      
   --- SoupGate-Win32 v1.05   
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