Shared Projects by theepicureanshoppe

Five Fish Tribute Opamp Test Jig (NOT FOR RESALE / NOT FOR COMMERCIAL PURPOSES)

NOT FOR RESALE! FOR NON COMMERCIAL DIY PURPOSES ONLY!

BOM and schematic are attached as pdf files below.

“FIVE FISH TRIBUTE” OPAMP TEST JIG

A friend of mine needed a test jig for discrete op amp kits he is building. My go-to recommendation for this was always the Five Fish Audio board — super straightforward, good options, etc. but since Five Fish has sadly passed, that project is no longer available.

Five Fish published schematics for many of their projects, including the opamp test jig, so I laid out a “new” one as a tribute. This project is completely and totally open source, as FF Audio had released the schematics presumably under that context, and is heavily marked as FOR NON COMMERCIAL DIY PURPOSES ONLY!

I’ve added a few changes to the FF board, including I/O jacks, a whole section for testing dual DIP-8 opamps one side at a time, various parallel footprints for different types of switches, etc. Likewise, I added multiple footprints for parallel resistors, since some of the gain setting resistors are oddball values and maybe you’d prefer to use “close enough” common values. Goal for this was to be able to build it out with parts you already have in your parts drawer.

Schematics, BOM, etc here: https://drive.google.com/drive/folders/1GjXNpyXrVJYEGH8Aos_KSex3xHcXm_Db?usp=sharing

BOARD NOT VERIFIED, BUT SHOULD WORK FINE…

Schematic, drill template, and documents: https://drive.google.com/drive/folders/14KKj08AHorgHKUjc1e-EpCwrwXex_grR?usp=sharing

OPEN SOURCE / NOT FOR PROFIT / FOR NON-COMMERCIAL D.I.Y. PURPOSES ONLY!!! Build docs and all info here: https://docs.google.com/document/d/1FS0KaR-OHO-RjKvFlTQ33LGtHSqZfUb7XBg1HyFi3c8/edit?usp=sharing

OPEN SOURCE / NOT FOR PROFIT / FOR NON-COMMERCIAL D.I.Y. PURPOSES ONLY!!! Build docs and all info here: https://docs.google.com/document/d/1XnkTOWzyiUlqTK5zi7hqMG6uh5VdrVWrgBty6MUNhkE/edit?usp=drive_link

NOT FOR RESALE / NOT FOR PROFIT / FOR D.I.Y. PURPOSES ONLY!!!

Schematic and docs + perf board layout diagram: https://drive.google.com/file/d/1CpbxKe_5VhtK415kuyaqLdaLk43yNy8U/view?usp=sharing

Original circuit by the legend R.G. Keen on his GeoFex site: http://www.geofex.com/Article_Folders/mosfet_folly/mosfetfolly.htm