ha-jurgen said:
and i don't see how a triac will help you here.
Now you will smile, but what a heck
. The idea was to discharge this capasitor thru triac on ignition coil. Capasitor current should be enought to start the ignition coil. When the coil starts then i can convert high voltage to high current, needed to light a bulb. I think that this is good idea ....
@Hermano
My work req. is to light a bulb and i can use anything i want , until this is simple and effective ( like eg. before ).
Sorry guys, but I dont see the "bulb" details anywhere. ie., Voltage or Current rating.
ha-jurgen!
You cannot "When the coil starts then i can convert high voltage to high current, needed to light a bulb"
P=VxI (primary = P=VxI secondary (theoretical)
Practically there is IxIxR losses and the PSec is less than Ppri.
Secondly, as others have tried to explain to you, 10Ufd has very little current capacity. All you can get is a "flash " of light with this capacitor. To see this light you'll have to use a very low current "bulb". Toy cars have these little bulbs 1v/.02A bulbs and may be the best you can do. Even this will be less than a second.
The best bet is a LED. Super Ultra-bright leds will light up quite qell @ 1ma current.
Anything else , (with other components etc.,) will just be a "fun" circuit without any scientific, engineering or electrical basis.
For example: You can use this 10 ufd cap at the base of a transistor and light a bulb for quite some time, depending on the Transistor gain. A darlington transistor with a collector load bulb connected to an EXTERNAL battery or Power source will stay lighted for some seconds.
Now, Thwe best you can do is tell us what components the " someone" who has already made used so that everyone here can guess if it is a "fools Bulb" science fair project (generally used for FUN effect.)
[The capacitor connected to the Ignition Coil primary wont DO anything: The current is too less and the ignition coil needs current in " amperes" to do something]:!: