Component list
Component List
Resistors
R1 = 33Ohm (optional, in parallel with loudspeaker)
R2 = 2.2kOhm
R3 = 100kOhm
P1 = 100kOhm trimpot, multiturn
P2 = 10kOhm potentiometer, linear
Capacitors
C1 = 100µF, 25V
C2 = 470µF, 63V
C3 = 330pF
C4,C5 = 1µF, tantalum
Inductors & Transformers
L1 = 47µH
Semiconductors
D1–D4 = 1N4001
T1 = BS170
T2 = BS250
IC1 = 4049UBE or 4069UBE
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