Finding a rotary switch for a stepped attenuator
"Dave Plowman (News)" wrote in message
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In article ,
tony sayer wrote:
I'm old enough to well remember stud faders used in broadcasting -
built regardless of cost (balanced faders would probably cost over 1000
quid if available today). And the regular need for cleaning them.
Conductive plastic was a welcome invention...
Blimey!, I've still got some of them around somewhere, made by Painton
IIRC signal box levers I thing we used to call 'em..
Quadrant types weren't balanced though - it was only the older vast round
ones from Type A desks.
I remember those cylindrical ones. In fact I think I may have a couple of
them at home in the UK. When I was a teenager, we sometimes used to
hang around a small local studio.. The owner had a six channel mixer,
either Grampian or Vortexion, with carbon pots. When they got noisy,
he used to take the back of the pot case, and rub the carbon track with
a soft led pencil. It was a low tech wonder-cure.
Iain
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