Christmas Candle
Blow It Out!
Gerber file
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Component list
Component List
Resistors
(all SMD 0805)
R1 = 1 MΩ
R2,R3,R4,R5 = 1 kΩ
R6 = 470 kΩ
R7 = 1.8 MΩ
R8 = 680 kΩ
Inductor
L1 = 22 µH, size 1812, TDK NLC453232T-220K-PF
Capacitors
C1,C2 = 10 µF, 10%, 25 V, X7R, size 1206
C3 = 100 nF, 10%, 50 V, X7R, size 0805
Semiconductors
LED1,LED2,LED3,LED4 = flickering candle LED yellow 3 mm (see text)
T1 = BC847C
IC1 = switching Boost regulator MAX1678EAU+
IC2 = Analogue comparator MCP6546RT-E/OT
Miscellaneous
K1 = 3.5 mm stereo jack connector SMD (CUI SJ1-3514-SMT-TR)
K2 = 3.5 mm stereo jack plug
Battery contact spring (Keystone Electronic 211)
S1 = 6 mm pushbutton (Alcoswitch FSM2JRT)
Sens1 = Humidity sensor HCZ-J3 (Multicomp)
PCB 190343-1 V2.21
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