D
Deleted member 12676
Guest
Here is my design for a DIY timing light after wasting hundreds of dollars buying different ones, none of which worked. I know the wire around the spark plug wire is without return connection to the circuit but it works by picking up electrostatic energy which uses air as return loop. This only works when it is dark as the light is not strong. But it works great for the small cost.
LED Timing Light Parts List
source: www.mouser.com
4 white light LEDs 638-33415X2C11SUA $.59 each
2 1N4001 diode 1N4001 $.13 each
1 5.1v zener diode 610-1N751A $.34
1 2N7000 FET 512-2N7000 $.42
1 10 ohm resistor 660-MF1/2LCT52R100J $.13
1 1.8K resistor 291-1.8K-RC $.10
1 100K resistor 291-100K-RC $.10
1 .01uf capacitor 581-SR155C103KAATR1 $.19
1 12 volt regulated supply 418-TRG1512-12-V $15.87
1 2.5/5.5mm jack 163-4305-E $2.98
Total before shipping = $22.75
LED Timing Light Parts List
source: www.mouser.com
4 white light LEDs 638-33415X2C11SUA $.59 each
2 1N4001 diode 1N4001 $.13 each
1 5.1v zener diode 610-1N751A $.34
1 2N7000 FET 512-2N7000 $.42
1 10 ohm resistor 660-MF1/2LCT52R100J $.13
1 1.8K resistor 291-1.8K-RC $.10
1 100K resistor 291-100K-RC $.10
1 .01uf capacitor 581-SR155C103KAATR1 $.19
1 12 volt regulated supply 418-TRG1512-12-V $15.87
1 2.5/5.5mm jack 163-4305-E $2.98
Total before shipping = $22.75