Article
Solid-state Turn Indicator
FET replaces relay
Some motorcyclists not only enjoy tweaking the engine but also dabble in electronics. The author encountered problems with the mechanical turn indicator on his Harley Davidson bike and came up with an all-electronic alternative. As it turned out (pun intended) , the little circuit is very useful for cars, too.
Materials
Gerber file
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PCB
Component list
Resistors:
R1 = 1k?
R2,R3 = 150k?
R4 = 100k?
R5,R6 = 10k?
Capacitors:
C1 = 100µF or 150µF, 16V, radial
C2 = 270nF
Semiconductors:
D1 = 1N4001
D1,D2 = 1N4148
T1 = IRFZ34N
T2,T3 = BC558
Miscellaneous:
PCB, ref. 050120-1 from The PCBShop
R1 = 1k?
R2,R3 = 150k?
R4 = 100k?
R5,R6 = 10k?
Capacitors:
C1 = 100µF or 150µF, 16V, radial
C2 = 270nF
Semiconductors:
D1 = 1N4001
D1,D2 = 1N4148
T1 = IRFZ34N
T2,T3 = BC558
Miscellaneous:
PCB, ref. 050120-1 from The PCBShop
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