Interrupteur activé par le son pour amplificateurs
Mise en marche automatique des amplificateurs et des haut-parleurs actifs
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Nomenclature des matériaux
Liste des composants
Résistances
(CMS *)
R1,R2 = 2.2 kΩ
R3 = 10 kΩ trimpot
R4,R9 = 330 kΩ
R5 = 51 kΩ (15 kΩ @ 20 V) *
R6,R8,R10,R13 = 10 kΩ
R7 = 100 Ω
R11 = 10 kΩ (39 kΩ @ 20 V) *
R12 = 1 kΩ (6.8 kΩ @ 20 V) *
R14 = 10 MΩ
RV = 100 kΩ potentiomètre, stereo, log (facultatif)
Condensateurs
C1 = 100 µF 10 V (100 µF 25 V @ 20 V) *
C2,C3,C4 = 100 nF ceramique ou film
C5 = 2.2 µF 10V (470 nF 25 V @ 20 V) *
C6–C9 = 220 pF ceramique
Semi-conducteurs
D1,D2 = 1N5711 (Schottky)
D3 = omitted (12 V diode Z @ 20 V) *
D4 = LED *
T1,T2 = BC848B
T3 = BSS84
Divers
Module amplificateur avec PAM8403 ou PAM8302 *
FB1–FB5 = bille de ferrite
J1–J4 *
* Voir texte

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