Upper Story - Endless Curiosity

Spintronic Junction

Spintronic Junction - Main image
$4.09 $6.29 In stock

Category: Extra parts

Overview

Spintronic junctions allow the current to branch, just like an electrical junction of three wires. Each sprocket is one of the three paths for current.

Detailed description

These junctions use a planetary gear arrangement, where the top sprocket is the sun, the middle sprocket is the ring, and the bottom sprocket is the carrier of the planets. The sprockets are of different diameters, but the internal gearing ratios are chosen such that it behaves according to the following equation:

vbottom = vmiddle + vtop

where:
- vtop is the velocity of a tooth on the top sprocket
- vmiddle is the velocity of a tooth on the middle sprocket
- vbottom is the velocity of a tooth on the bottom sprocket

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Customer Reviews (4.8 / 5 · 5 reviews)

Lucy M. ★★★★★

Wasn't sure how much a single sprocket would matter until I swapped one into my build and the current finally split the way I needed it to. Having three separate paths instead of forcing everything down one wire cleaned up the whole layout.

Aurora ★★★★★

The three-way branching on these junctions is exactly what my circuit layout needed, and the current splits cleanly across all three sprocket paths without any drop-off. Snapped right in where my old electrical junction was.

Ryan ★★★★★

Wasn't sure these would fit my build but the three-way branching works exactly like a wiring junction, which made rerouting the current a breeze. Getting three separate sprocket paths out of one small piece is surprisingly handy for tight setups.

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