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Diode-Bridge Voltage-Controlled Attenuator

Public Unreviewed

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 / libraries / AnalogVCA_THT.pretty / Terminal_1x02_P5.08mm.kicad_mod
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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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(footprint "Terminal_1x02_P5.08mm"
	(version 20260206)
	(generator "pcbnew")
	(generator_version "10.0")
	(layer "F.Cu")
	(descr "5.08 mm pitch PCB screw terminal")
	(tags "through-hole hand-solder")
	(property "Reference" "REF**" (at 0 -4.4 0) (layer "F.Fab")
		(effects (font (size 0.8 0.8) (thickness 0.14))))
	(property "Value" "Terminal_1x02_P5.08mm" (at 0 4.4 0) (layer "F.Fab")
		(effects (font (size 1 1) (thickness 0.15))))
	(attr through_hole)

	(fp_line (start -4.94 -3.5) (end 4.94 -3.5)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start 4.94 -3.5) (end 4.94 3.5)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start 4.94 3.5) (end -4.94 3.5)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start -4.94 3.5) (end -4.94 -3.5)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(pad "1" thru_hole rect (at -2.54 0) (size 2.7 2.7)
		(drill 1.3) (layers "*.Cu" "*.Mask"))
	(pad "2" thru_hole circle (at 2.54 0) (size 2.7 2.7)
		(drill 1.3) (layers "*.Cu" "*.Mask"))
)