For a diy classD in the 300-500W/8Ohm range: would you prefer latching or non-latching over-current protection? Would it change anything if the application was for an active subwoofer where the load is pretty defined?
Asking because I can se pros and cons for both options.
Kind regards TroelsM
Asking because I can se pros and cons for both options.
Kind regards TroelsM
I have no opinion as such, but be aware that a latching protection feature requires that you can get to the equipment and cycle power to the amp. I know this sounds super obvious, but if the amps end up in PA and installation equipment and active loudspeakers, this may not always be easy.
For home use it is probably more an inconvenience than an actual problem though.
For home use it is probably more an inconvenience than an actual problem though.
Nisbeth: I fully agree: a latch requires a reset. For me, that would be the primary asset: any error big enough to trigger a 20-30A OCP, is probably worth checking out and do a manual power-cycle.
On the other hand: if the amp can fully protect itself (and not destroy the driver while doing so), no harm will be done. - except some potentially very "funny" noises when the OCP triggers.
While my question is general, the primary application is small/hobby PA.
Kind regards TroelsM
On the other hand: if the amp can fully protect itself (and not destroy the driver while doing so), no harm will be done. - except some potentially very "funny" noises when the OCP triggers.
While my question is general, the primary application is small/hobby PA.
Kind regards TroelsM
Let us assume that in normal conditions the OVP never will trigger. So it may trigger in some abnormous condition only. In that case, a self resetting OVP may produce periodic excessive noise - and you have to hurry to the 19"rack to stop that annoyance before the auditory gets mad and your speakers burn. So I vote for latching OVP.
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