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Electronics for Theremins (1)

FredM over 14 years ago

This is the resource page to accompany the thread Electronics for Theremins – 1 –
which is running at http://www.thereminworld.com/Forums/T/26581/electronics-for-theremins---1

General discussion on this matter should be done at the Theremin World forum (link above) but suplimentary data / schematics etc can be attached / hosted here by members of this group.. If you have not yet signed up to E-14, do so now! Joining this group is free, and Element-14 is a great site for technical matters.

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FredM over 14 years ago

These are image files to go with 'tutorial'.

Biasing 1 - Simple biasing schematic and waveform.
Biasing 2 - Simple schematic and waveform to demonstrate AC equivalent attenuation.
Buffer - Buffer schematic

Buffer waveforms on next post - limit is 5 attachments per post.

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FredM over 14 years ago

Buffer waveforms.jpg attached.

.pdf with entire article will also be attached here.

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FredM over 14 years ago

Some Theremax stuff..

This links to http://www.thereminworld.com/forum.asp?cmd=p&T=4819&F=3&p=2

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FredM over 13 years ago

Keyboard for Theremin?
the following is part of discussion at http://www.thereminworld.com/Forums/T/28575/is-it-possible?Page=0

The following is part of discussion hosted here:
http://www.thereminworld.com/Forums/T/28563/theremin-talking-machine?Page=3

Waveforms for vocal simulation:

the following is part of discussion hosted here: http://www.thereminworld.com/Forums/T/28576/555-volume-control
Simulation showing rubbish circuits being published on WWW.
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FredM over 13 years ago

The discussion related to this can be found here: http://www.thereminworld.com/Forums/T/28592/coil-tuning?Page=1

Diagram of mechanics for adjustable length antenna:

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FredM over 13 years ago

See http://www.thereminworld.com/Forums/T/28592/coil-tuning?Page=1 for discussion about this.

Displaced antennas for improved linearity ?

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DAB over 13 years ago

Hi Fred,

I appreciate your sharing. I once thought the Theremen group was on hiatus, but I am glad that you are back.

Thanks for sharing,

DAB
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FredM over 13 years ago

Refer to http://www.thereminworld.com/Forums/T/28592/coil-tuning?last=True for discussion related to this:

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FredM over 13 years ago in reply to DAB

"I once thought the Theremen group was on hiatus, but I am glad that you are back." -

Thanks Dab -

Yes, it did go quiet - I had heart failure which put me out of action for quite a while.. But slowly im gettring back to work and pilling the threads together.

Most of the 'action' happens at Theremin World http://www.thereminworld.com/

I have tried to get engineers involved in theremin R+D to use Element-14 as a resource, but few have taken my invitation / suggestion - Theremin World is their "comfort zone" - and those who do occassionally visit Element 14 tend do most of their activity at Theremin World.. I do understand this, and do not want them to "move homes" ..

But it would be nice if more resources were placed here (more schematics, documents etc) as Theremin World is not specifically technical - it covers the whole theremin spectrum, including playing techniques etc - and its technical repisitory is tiny compared to what I have collected here.. Also, Element 14 is great for engineers, as it has all the tools one needs for technical discussion, and allows attachment of simulations etc, which TW does not.

Fred.
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FredM over 13 years ago

I have updated the links in the above postings, so that they align with the schematics / drawings.. The only one not working is the Theremax stuff - I cannot find the correct page at the moment, but hope to fix this soon.
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