On Sat, 27 May 2006 14:25:23 -0600, Hamad bin Turki Salami
put finger to keyboard and
composed:

On Fri, 26 May 2006 21:45:30 -0700, Dr.Anton wrote:

In article m.net,
(known to some as Hamad bin Turki
Salami) scribed...

I'm just curious about a component that's on a board
in a synthesizer I have. It looks like a pot and it's
hooked to a knob that turns through about 315 degrees.

snippety

It could be a Hexadecimal or BCD-output rotary switch. See if you
get continuity in a binary-like sequence.

Hmm. This thing determines a MIDI controller value that varies between
0 and 127. Maybe it's doing 2 Hex digits and throwing away one bit?
But the resistances between the various leads do vary as I turn the knob;
they go up and then down in a non-linear and non-monotone way.

What are the various resistances at min (0000 0000), centre (0011 1111
or 0100 000), and max (0111 111)? Is there a common terminal?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.