its not like that in the picture. take the red minus wire from left PSU and connect it to the pluss. and red plus wire on the right PSU and connect that to the minus. so that you have one wire from plus and one from minus on eatch PSU.
Well, now i see that when i turn the amp on that the speaker pushes out all the way and sits there stiff?
I use crappy speakers for testing... yes I hook up like you say and fixed that wire. It was accidentally not put in right spot 😉
but I see the problem still exits maybe i will give up for today
anyway. disconnect the speakers. they can hurt your hearing in worst case.
you can massure DC ofset on the outputs i fear they are close to +20V. and massure the rails. see if you have +24V and -24V.
one channel shows 3.66 volt on DC speaker output other shows 18.5 vdc !!! oh **** i suppose i should work on one channel at a time
check your resistors on the minus side. so you know they aren't burned. if they'r not, i guess your ztx 450 said good night.
Kind of curious as to how the SMPSx2 connected in series works. I suppose if they have isolated outputs they can be safely connected.
Are SMPS usually four quadrant power supplies? In the typical 2 quadrant linear regulator, the positive supply can only source current, while negative only sink.
In the case of isolated SMPS, is it more like 2 positive regulators from 2 transformers connected in series, or does the "ground" current dump into the 2 different supplies on positive/negative parts of the signal?
Are SMPS usually four quadrant power supplies? In the typical 2 quadrant linear regulator, the positive supply can only source current, while negative only sink.
In the case of isolated SMPS, is it more like 2 positive regulators from 2 transformers connected in series, or does the "ground" current dump into the 2 different supplies on positive/negative parts of the signal?
it works in the same way as transformer sec with there own bridge in series.
plus and minus cancel eatch other and work as as a safety ground.
plus and minus cancel eatch other and work as as a safety ground.
Yes.. I see -24 and +24 at pcb when i check gate of Q8 to chassis I get -24.3 volt?
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