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Diode-Bridge Voltage-Controlled Attenuator

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by 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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diode-vca-attenuator / manufacturing / gerbers / drill-report.txt
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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
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Drill report for diode-vca-attenuator.kicad_pcb
Created on 2026-10-08T00:28:49

Copper Layer Stackup:
    =============================================================
    L1 :  F.Cu                      front
    L2 :  B.Cu                      back


Drill file 'diode-vca-attenuator.drl' contains
    plated through holes:
    =============================================================
    T1  0.300mm  0.0118"  (6 holes))
    T2  0.800mm  0.0315"  (4 holes))
    T3  1.000mm  0.0394"  (47 holes))
    T4  1.300mm  0.0512"  (9 holes))

    Total plated holes count 66


Not plated through holes are merged with plated holes
    unplated through holes:
    =============================================================

    Total unplated holes count 0