board
Diode-Bridge Voltage-Controlled Attenuator
Public Unreviewedby John Lauer
Two-layer through-hole audio attenuator: four 1N4148s as a current-biased shunt bridge, 0 to 2 V control, designed by Saif Abdessayed with Adom Hydrogen
← Commit history
README: the RC test gallery and a manufacturing section; no auto-picked datasheet
2 files changed
+17−3
README.md+14−2@@ -56,9 +56,17 @@ From Saif's engineering review of the delivered package. These are now checks fo ## Earlier test: buffered RC low-pass filter -Before this board, Saif ran a simpler test: a 1 kHz RC low-pass filter with an MCP6001 follower. He corrected the first part choices, and the schematic run then took 35 minutes. Screenshots are in [`rc-filter-test/`](rc-filter-test/).+Before this board, Saif ran a simpler test: a 1 kHz RC low-pass filter with an MCP6001 follower. He corrected the first part choices, and the schematic run then took 35 minutes. -+++| Parts Search | Schematic |+|---|---|+|  |  |++| After routing | Top copper | Bottom copper |+|---|---|---|+|  |  |  | ## Files @@ -75,4 +83,8 @@ Before this board, Saif ran a simpler test: a 1 kHz RC low-pass filter with an M | `generate_project.py`, `tools/` | The script Hydrogen wrote to generate the project | | `rc-filter-test/` | Screenshots from the earlier RC filter test | +## Manufacturing++The fabrication release is in [`manufacturing/fabrication-release/`](manufacturing/fabrication-release/): Gerbers, drill files and the drill map ([`diode-vca-attenuator-drl_map.pdf`](manufacturing/fabrication-release/diode-vca-attenuator-drl_map.pdf)). Fix the known issues above before ordering boards.+ Designed by Saif Abdessayed, October 2026.
page.json+3−1@@ -35,7 +35,9 @@ "category": "", "subcategory": "", "body_size": null,- "parts": {},+ "parts": {+ "datasheet": ""+ }, "distributor_links": {} } }