How does MOSFETs with ROF adjustment work? A coded "delay" or PWM?

[ccyg8774]

As the title said, I am wondering how the MOSFETs with ROF adjustment work.

Do they reduce the ROF by PWM (Pulse-width modulation) to reduce the power output of the moter (will decrease the ROF, but also decrease the trigger responce, basically the same effect as the lower voltage), or do they insert a short delay by the program (do not reduce trigger responce) after each cycle?

I was reading the page about the MERF 3.2 and I saw this logo:

To me this logo looks like it means PWM. But MERF 3.2 also uses another feature called Smart Trigger to remove the trigger responce lose from the PWM. But is there other MOSFET using the "delay" method?

[ThunderCactus]

they use pulse to reduce current
having delay would be extremely, extremely bad for the mechbox, and such a delay would be apparent as most people would complain of piston pre-engagement failures, also the mosfet has no REAL way of determining what position the mechbox is actually in when the gun is full auto which means the delay would end up anywhere in the cycle.

The diagram as I see it, depicts pulsed power resulting in slower ROF.

[ccyg8774]

Originally Posted by ThunderCactus

they use pulse to reduce current
having delay would be extremely, extremely bad for the mechbox, and such a delay would be apparent as most people would complain of piston pre-engagement failures, also the mosfet has no REAL way of determining what position the mechbox is actually in when the gun is full auto which means the delay would end up anywhere in the cycle.

The diagram as I see it, depicts pulsed power resulting in slower ROF.

Thanks for the reply.
Now I want to start another AEG electronic project...

[ThunderCactus]

Electronics are great, but someone should make planetary gearsets and brushless motors!

[Wrath144]

There actually are mosfets who control fire by a delay between cycles. I'm positive it exists but I can't remember who makes it...

[cetane]

The chimera & spectre (probably the raptor too) use a time delay between shots to drop the rof but they physically detect sector gear location via cut off lever or off cam on gear. Without that physical detection, a wire in MOSFET (basic or more advanced) can't do it by time delay so pwm it has to be

[audi_bhoy]

ASCU does also monitors the cut off lever to ensure that mechbox is always in neutral position when not firing, but their systems seems more prone to break. Had a V2, loved it, installed a V3 for a customer, was a pain to fit and get to work, but might be due to the parts that it was combined with.