MOTM

You answered your own question: one is for pcb mounting (pins), and the
other
is for panel mounting (lugs).

As far as the rotational torque, nothing I can control there. The Bourns
pots have
less torque, but that doesn't make them "worse" than the Spectrols.

In fact, in a former life I designed industrial temperature controls. We
used the
Bourns exclusively. The reason: reliability! We had controls 11 years old,
that got
adjusted 6 times a day that the pot never wore out or got "scratchy". In
fact, they have
special lubercant that raises the life to a *min* of 250,000 end-to-end
rotations, with
500,000 "typical".

That's 1 rotation a hour for 29 years.

Paul S.

----- Original Message -----
From: Brousseau, Paul E (Paul) <PaulBr@...>
To: <motm@onelist.com>
Sent: Thursday, January 06, 2000 8:22 PM
Subject: [motm] Wacky question of the day...


> In each of the modules I've received to date, there are two types of pots.
> I don't have them in front of me, but I remember them being by Burnes and
> Spectrol.  One gets surface mounted on the PCB, and the other gets
connected
> directly to the front panel (I don't recall which is which).  I can
> immediately tell the difference in the action of the one module I've
> constructed to date... the PCB-mount knobs are firmer and more pleased,
> while the faceplate-mount knobs feel rather loose.
>
> Is there...
> 1) any reason why the two different knobs are used?
> 2) any reason why I couldn't pick up a few spare PCB-mount knobs and use
> them in place of the faceplate-mount knobs?
>
> Thanks!!
>
> --PBr
>
>
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