Analogue-sequencer

> Now a power problem. I found an AC transformer 12V 1A at home, this
would probably be good to power the 3031. Could I use the same to also
power the P3?

No, you can't. If you have a single winding on the transformer, you can
connect this to the TB3031 or the P3. But you can't have both. The P3
will want one of the wires from the transformer to be ground, the TB3031
will want it floating. Connecting the two together compromises the
TB3031.

However, if your transformer has true double secondaries [0-12, 0-12]
you can use one winding for each unit. Ground the TB3031 to the P3's
ground and all will be well.

If you have a split secondary, or centre tapped winding [ie. 12-0-12],
you could wire the TB3031 as shown in the User Guide for a split
secondary, and wire the P3 between one of the windings and the 0 volt
tap.

But a 12V winding will produce in excess of 18V... Colin's P3 will be
disipating quite a lot of heat, around 5W!!

I would use separate transformers for each. A small transformer is only
a a few quid.

Official safety disclaimer: Any wiring of mains powered components must
be done so at your own risk. Mains voltages can and do endanger life. I
am not responsible for your actions and or consequences arising from
this e-mail's contents. I recommend that you buy two wallwarts.

Regards,

Tony Allgood                         www.oakleysound.co.uk

Oakley Modular Synthesisers      Penrith, Cumbria, England