Encephalo Adjuster - NLC - Build notes - part 1

This is a 24 stage phase shifter

It uses LDRs (light dependant resistors)

Links

+ Wiki

+ BOM

The build looks like it can get crazy  with a huge number of LDRs ... twenty four.

I understand it has wide sweet spots and is an excellent sounding phaser. Should be fun to build .

Doesn't look like there are any hard to find parts.. apart from the 13700 op-amp which seems to be in short supply from some shops

''

 

There are 3 PCBs

 

..

 

The name of the module comes from a mind control device that appears in a few  of AE Van Vogt's Sci-Fi novels.

Van Vogt began publishing science fiction with “The Black Destroyer,” the first of four stories which became his novel The Voyage of the Space Beagle. 

His other major works include Slan, The Weapon Shops of Isher, and The World of ­Ā. (Null A) which is of course a NLC module.

+ NULL-A - mini synth - 2VCOs, 2 filters, etc - Build notes

Wikipedia link

The Voyage of the space beagle was first published in 1950, though most of this book was written much earlier and published separately:
- Chapters 1-6 appeared as "Black Destroyer" in the July 1939 edition of Astounding Science Fiction;
- Chapters 13-21 appeared as "Discord in Scarlet" in the December 1939 edition of Astounding Science Fiction;
- Chapters 22-28 appeared as "M33 in Andromeda" in the August 1943 edition of Astounding Science-Fiction.

There are eight TL074s and one LM 13700

 

 

+ Integrated circuits - packaging

Get the ICs on first.

Rest of the caps, resistors.

 

Trimmer - 100k

 

Trannies - BC587 & 547

schottky diodes

to be continued....,.

Encephalo Adjuster - NLC - Build notes - part 2 (Completion)

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You can find more NLC builds here.

http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html

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