Anyone experienced with Theremins?

[Harry Bissell]

A small linear power supply should be no problem...

Most companies are using wall warts for a couple of reasons...
1) You can easily get a wall wart for any country in the world...
2) Safety Regulations... most small wall warts are "Class 2" which
means they are inherently current limited... If you short them out
continuously they will either self-limit without overheating... or will
blow a thermal fuse inside themselves... thereby no risk of fire.

This means that Underwriters Laboratories does not have to approve
the electronic device (theremin, effect, whatever...)... because it has
already approved the power source...

Bigger "Brick" type supplies still need approval...

3) It keeps the magnetic field away from the Audio Circuits...

H^)   harry

Paul Braun wrote:

> I'm building one of PAiA's Theremax kits, but putting it in my own
> cherrywood case with a steel groundplane inside on the bottom. I
> would really like to avoid the little wall wart....would a nice,
> regulated and filtered p/s inside the case cause serious
> interference with the oscillators? Since the antennas are basically
> external to the case and fed with coax, I would think that a small
> internal p/s would be ok.
>
> Any experience or suggestions?
>
> Thanks.
>
> Paul Braun
> Cygnus Productions
> nerdware_nospam at laidbak.com