Component List

Resistors (all SMD 0603, 1%)

R1 = 47 kΩ

R2 = 220 Ω

R3 = 3.3 kΩ

R4,R5,R13,R14 = 68 kΩ

R6,R10 = 21.5 kΩ

R7,R9,R16,R18 = 4.22 kΩ

R8,R11,R17,R20,R22,R24,R25 = 10 kΩ

R12 = 0 Ω

R15,R19 = see text

R21 = 1.1 kΩ

R23 = 50 Ω

Capacitors

C1,C2,C3,C4 = 47 nF, SMD 0805

C5,C6,C7,C8 = 22 µF, 20 V, electrolytic, SMC-B

C9,C10,C11,C12,C13,C14 = 100 nF, SMD 0603

Semiconductors

LED1 = LED, red, SMD 0805

LED2 = LED, green, SMD 0805

IC1...IC3 = OPA2209 AIDR, SO08

Others

K1,K2 = 2-pin pinheader, pitch 0.1”

K3...K6 = 3-pin pinheader, pitch 0.1”

PCB*

Power supply PCB*

Aluminium enclosure Hammond 1550Q

* See text