Hello,
I'm building a rpm limitter for a car engine.
I usa for it a PIC cpu but that's not the problem.
the method i want to use to stop de engine is very simpel, i want to cut of the power supplied to the "Bobine" = "ignition coil" the voltage is a car voltage (engine off 12volts on it is 14volts ) the amps are high 4ams running at 1200rpm/min (don't know yet if it increases when there are more rpms.
OK to the point when running at 5500rpm/min i cant's use a normal mechanical relay because it is to slow. and when pussing the pedal to the limit the switching frequency would be very high..
soow i need to build a solid state relais my question is
how can i build one. and wich components i need.
basicly it should be something like this
-- i have steer power of 5v and 8v and (car voltage..12-14)
-- 4amps min. i want something like 12amps.
-- fast switching <1ms???
i was thing using a triac but i dont know if it usefull in this case.
soow please help.
TKS
I'm building a rpm limitter for a car engine.
I usa for it a PIC cpu but that's not the problem.
the method i want to use to stop de engine is very simpel, i want to cut of the power supplied to the "Bobine" = "ignition coil" the voltage is a car voltage (engine off 12volts on it is 14volts ) the amps are high 4ams running at 1200rpm/min (don't know yet if it increases when there are more rpms.
OK to the point when running at 5500rpm/min i cant's use a normal mechanical relay because it is to slow. and when pussing the pedal to the limit the switching frequency would be very high..
soow i need to build a solid state relais my question is
how can i build one. and wich components i need.
basicly it should be something like this
-- i have steer power of 5v and 8v and (car voltage..12-14)
-- 4amps min. i want something like 12amps.
-- fast switching <1ms???
i was thing using a triac but i dont know if it usefull in this case.
soow please help.
TKS