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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
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John Lauer
Saif Abdessayed's diode-bridge VCA: KiCad project, Gerbers, BOM, simulations, reports, and the earlier RC filter test
45f3ff6
11d ago
Evidence classification
simulation/results/*.logand the two CSV summaries are actual ngspice 42 outputs produced bysimulation/run_simulations.py.- Equations and hand-calculated currents/resistances in
engineering-review.mdare calculations. - Slew rate, package/pin data, voltage ratings, distributor status and stock are datasheet/catalog evidence or estimates based on those sources.
- Statements about likely real-board behavior are engineering estimates until bench measurements exist.
- No result in this project is physical validation.
# Evidence classification
- `simulation/results/*.log` and the two CSV summaries are actual ngspice 42 outputs produced by `simulation/run_simulations.py`.
- Equations and hand-calculated currents/resistances in `engineering-review.md` are calculations.
- Slew rate, package/pin data, voltage ratings, distributor status and stock are datasheet/catalog evidence or estimates based on those sources.
- Statements about likely real-board behavior are engineering estimates until bench measurements exist.
- No result in this project is physical validation.