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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 / TO92_Inline_EBC.kicad_mod
HistoryDownload
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 "TO92_Inline_EBC"
	(version 20260206)
	(generator "pcbnew")
	(generator_version "10.0")
	(layer "F.Cu")
	(descr "TO-92 inline; pads 1 E, 2 B, 3 C")
	(tags "through-hole hand-solder")
	(property "Reference" "REF**" (at 0 -3.2 0) (layer "F.Fab")
		(effects (font (size 0.8 0.8) (thickness 0.14))))
	(property "Value" "TO92_Inline_EBC" (at 0 3.2 0) (layer "F.Fab")
		(effects (font (size 1 1) (thickness 0.15))))
	(attr through_hole)

	(fp_line (start -3.8 -1.7) (end 3.8 -1.7)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start 3.8 -1.7) (end 3.8 1.7)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start 3.8 1.7) (end -3.8 1.7)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(fp_line (start -3.8 1.7) (end -3.8 -1.7)
		(stroke (width 0.18) (type solid)) (layer "F.Fab"))
	(pad "1" thru_hole rect (at -2.54 0) (size 2.2 2.2)
		(drill 1) (layers "*.Cu" "*.Mask"))
	(pad "2" thru_hole circle (at 0 0) (size 2.2 2.2)
		(drill 1) (layers "*.Cu" "*.Mask"))
	(pad "3" thru_hole circle (at 2.54 0) (size 2.2 2.2)
		(drill 1) (layers "*.Cu" "*.Mask"))
)