How to drive Frangibolt?

[muthukural001]

Hello All,

I can see some Frangibolts with the operating voltage of 22-26V and operating current of 1A-4A. I want to know that How to build driver circuit for them. Is simple switching circuit that consist of MOSFET is enough? Please let me know.......


Regards,
Muthu

[senso]

Ask manufacturer for the correct way to drive them?

Aerospace and those kinda of questions is a bit scary..

[ajb]

Seems like the trigger mechanism is just a heater, so yes, applying sufficient voltage should cause them to actuate.  However, since it's a thermal mechanism, initial temperature will affect actuation time, so if that's important you may want to apply a lower power level to preheat the mechanism, or regulate the power input according to system temperature.  That's a bit more complicated, especially if you want to ensure that a glitch will not result in premature triggering. . .