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All stories · page 18

IRZ archive, page 18.

PSU-EXT prototype in a black enclosure with binding posts and USB-C connection

This box modernizes a bench supply without opening it

PSU-EXT sits between a bench supply and the circuit under test, adding measurement, protection, SCPI and automation. Its manufacturing files are already public even though the product is still in pre-launch.

Philips TDA7000 die annotated with its main functional blocks

Reading a radio directly from silicon

Ken Shirriff reconstructed the Philips TDA7000 from a photograph of its die. His method turns patterns in silicon into transistors, then into a schematic, one functional block at a time.

Thermoacoustic engine prototype with its loop, heat exchangers and connected components

This Engine Is 3D-Printable. Just Not on One Printer

A thermoacoustic engine is becoming reproducible from published 3D files. The interesting part is not the word printable, but how the design divides heat, pressure and geometry between polymer and metal processes.