Re: [IRCA] More phaser musings

[Walter Salmaniw <salmaniw@xxxxxxx>]

At 11:33 AM 10/29/2006, you wrote:


>Is this coarse/fine done by putting two pots in series, a high value
>(maybe 5k?) and a low value (250 ohms)?  An alternative would be
>to use a 10-turn pot with a mechanical counter dial, these can get
>costly. The two pots would create an "electrical vernier" and the
>10-turn pot a "mechanical vernier". I would think the "electrical
>vernier" option could give better resolution, as some of the 10-turn
>pots I remember were wirewound with a slider, OK for DC work but
>maybe not so good for RF due to the inductance of the winding, and
>the jumps in resolution. A wiper on a carbon strip inside a pot has
>better continuous resolution.
>
>What was the Misek design?
>
>- Bob                      1433 est


Oops, to tell you the truth, I haven't peeked inside yet, Bob.  I'll have to defer to Steve who built the unit for me.  Steve?...........Walt.



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