Anyone experienced with Theremins?

[Paul Braun]

It would seem that Harry Bissell typed forth the following:

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

That was my plan. Line in>Xfmr> bridge> regulator> filter> output.
Nothing but net.

> 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...

The one in the kit came from RadioShack...

> 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...
> 

Ahhhh. The CYA theory. Makes sense.
> 
> 3) It keeps the magnetic field away from the Audio Circuits...

This is my biggest concern. I'm just hoping that with a small 
enough transformer (perhaps in a small metal project box inside 
the wooden case) there won't be enough of a field to matter.

Thanks.




Paul Braun
Cygnus Productions
nerdware_nospam at laidbak.com