This is part of a coilgun project I am working on.

So i have an SPST relay rated at 2A, which can be switched by a signal from a 9v battery. The 'higher current' it will be taking is from a photoflash capacitor of capacitance 80uF, rated at 330v.

My question is, provided the capacitor discharges in 4.4ms (from my calculations) will it blow the relay?

I am confused because there are two ways of looking at it:
1) I've calculated that if this discharge continued for one second (which is what current measures - coulombs per second) the capacitor will discharge 6 Amps through the relay, thereby blowing it.

2) HOWEVER, given it can only hold 2.64x10^-2 coulombs and is (for all calculations) fully discharged after 4.4ms, in the full second after it begins discharging the current which has passed through the relay is only 2.64x10^-2 Amps.


So which is correct??
Thanks

 

Depends on type of relay contacts, if rated for high V , 2A rating will probably carry pulsed overload with no problem. " coil gun" will most likley bring " CLOSED" to your post.

 

Hello,

I am closing this thread as it violates AAC policy and/or safety issues.

Quote:
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• Any kind of over-unity devices and systems
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