onlybike:
Injector are high-ohm ones (14,5 ohm). Calculated current is about 0.8A and measured one is the same.
In cicrciut "urz.1" and "urz.2" means injector + flyback diode - I should wrote that.Couldn't find manufacturer PDF, but here is specification of PWM generator:
Adjustable Square Rectangle Wave Signal Generator Module 2 Channel PWM Pulse Frequency 1Hz-150KHz
I have test it with multimeter and works fine - 50% duty cycle gives 2,5V, 100% gives 5V.
Even withount PWM generator one mosfet works correct just by switching by connecting jumper-wire to 5V and.12V comes from 33A industry power supply.
What is the current limit on the supply set to?
What happens if you use a wire to jump two injector MOSFETs to 5 volts, at the same time?
Paul