Component list
Resistors
R1 = 330Ohm
R2 = 680Ohm
R3 = 470Ohm
Capacitor
C1 = 100nF
Inductors
TR1 = PE-65612 (Pulse) or home made (2 x 10 turns on Amidon FT 50A-77)
Semiconductors
LED1 = standard LED, yellow
Miscellaneous
Cinch socket
Solder pins
USB audio adapter type UltraPortable Audio Card from Speed-Link
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