Ok I have a 300va dual 21vac transformer. I also have a chipamp 3886 kit, and a 41hz amp something or another (takes 20-35volt).
Is is possible to make an external power supply and run both of these from it (not at the same time)?
From the looks, they need to be in series with ct for the gainclone, and parallel for the tripath. I wish there was some magical regulator that would invert 1 channel of the gain clone powersupply.
Is is possible to make an external power supply and run both of these from it (not at the same time)?
From the looks, they need to be in series with ct for the gainclone, and parallel for the tripath. I wish there was some magical regulator that would invert 1 channel of the gain clone powersupply.
wait a minute, couldnt i just make a full wave ct rectifier for the 41hz? that would half the voltage and double the current.
Draw it so we know what you mean. To get the full VA rating of the tranny at 21 vac would need both windings to be used... so that means with them in parallel... and for the CT gainclone they are in series.
http://a.imageshack.us/img691/5422/psrev3schtest.gif
Eh that this idea would not work if the pgnd's are connected. They are not on the power supply pcb, but they are on the lm3886 modules (makes the ground). So i could install a switch i guess. If i dont then i would have just grounded out both supplies
Eh that this idea would not work if the pgnd's are connected. They are not on the power supply pcb, but they are on the lm3886 modules (makes the ground). So i could install a switch i guess. If i dont then i would have just grounded out both supplies
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nightanole -
I assume you haven't physically wired it as you show where +ve and -ve supplies are shorted to GND or you're going to get a loud bang as your caps explode.
Assuming that's not the case, why have you linked +PGND to the -ve supply and -PGND to the +ve supply and not the other way around?
Am I missing something here?
I assume you haven't physically wired it as you show where +ve and -ve supplies are shorted to GND or you're going to get a loud bang as your caps explode.
Assuming that's not the case, why have you linked +PGND to the -ve supply and -PGND to the +ve supply and not the other way around?
Am I missing something here?
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Try this thought. The top powersupply is a carbon copy of the bottom power supply. so the top of each power supply is positive, and the bottom of each power supply is negative. Series them together and you get 60 volts with a center tap. Connect the tops to the tops, and the bottoms to the bottoms, and you get parallel arrangement.
There really isnt a negative rail like with a regulated setup, its really just 2 30volt powersupplies thanks to the fact the center rail isnt connected on the pcb.
If you go back further you will see im really just connecting the positive posts of the caps together, and the negative posts together.
There really isnt a negative rail like with a regulated setup, its really just 2 30volt powersupplies thanks to the fact the center rail isnt connected on the pcb.
If you go back further you will see im really just connecting the positive posts of the caps together, and the negative posts together.
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