Recomendación de osciladores.

Hola Soy algo malo con los idiomas, seria mas claro si uso el español, espero no estar fuera de lugar.

hace poco compre algunos inductores variables solo por vicio, estaban baratos y tendría con que jugar, mi idea inicial es probar algunos osciladores y filtros, tal ves no sean muy adecuados para theremin ¿alguien podría recomendarme algunos osciladores para probar? hice una imagen de las conexiones del inductor, aclaro que quite los condensadores para poder usarlos en otra frecuencia y también podría poner un devanado extra si es necesario, tienen una toma central y es como los estoy usando.

He probado esto, jugando un poco con diodos en el mezclador para modificar la forma de onda, el oscilador lo saque de un diseño de Dwester.

Oscilacion de la antena y salida del buffer

 El tono.

Saludos.

Gono,

Everything you present I really like. The  English Translator is working fine. Visit this webpage which is my NPN rework of the Thierry design.

http://www.thereminworld.com/Forums/T/32509/thierrymin-2020-perfectly-linear?post=215249

There is a lot more not seen but this could evolve into the big Classic theremin sound.

The coils you use should indicate they are shielded to help keep them from interacting with each other.

Also for my NPN re-design I can post the PDF file for easy printed circuit board making the only way to explore theremin design.

Christopher

Cristopher.

Gracias por el link son buenas opciones para empezar a probar, tengo todo lo necesario, solo estoy probando en el protoboard antes de ir por un diseño de PCB, se de la capacitación y de todos lo problemas de interacción entre los componentes, pero por el momento me da una buena aproximación.

Sobre los inductores no encontré nada de información, fue una compra a ciegas, el numero de parte es 256BLR-5558N me salieron 12 dolares 100 unidades
 

Miguel.

That's how the theremin ended, it doesn't have the best linearity but it is relatively stable despite the ferrite, I liked the result and it's quite simple.

https://www.youtube.com/watch?v=z7kYVWVVzZs&t=0s

Gono,

Very nicely done and that enclosure is beautiful. I like that display of what appear to be spiritual necklaces.

Christopher

Bravo Goño!  The pitch and volume fields seem large and workable enough.  I'm glad that you found something of use in my oscillator explorations.

What does your volume circuit look like?

Gono,Very nicely done and that enclosure is beautiful. I like that display of what appear to be spiritual necklaces.Christopher

Thanks Christopher for the link. If they are necklaces, it is my wife's collection.

Saludos.

Bravo Goño!  The pitch and volume fields seem large and workable enough.  I'm glad that you found something of use in my oscillator explorations.What does your volume circuit look like?

Thanks Dewster. If there is enough space to give it a good dynamic, although I lack years of practice.
This is the design for now.

Saludos.

Needs a little more polish but might work as a simple proximity volume control. Gono I owe you one.

Pot-1 should be user accessible?    I have not made anything since last Christmas, this is a good starter project.

This could be good with the ThierryMin but for me that theremin is subject too much thermal drift.

My Phoenix would be the next choice for $20 more if you wanted the Classic Sound, but that design has been retired.

Gono what is the frequency of your Pitch Oscillator?  900 khz would be ideal

Christopher

Thanks for the schematic Goño!  I'm not entirely clear on how the volume side works.  Does it rely on mains hum (i.e. 50Hz / 60Hz) pickup from the hand?