Hi everyone.
I got a 240 V transformer that gives an output of 2 X 12 V AC.
I need to get 2 X 9 V dc and +-5 V dc. My first thought was to get the +9 V DC and ground from each of 2 X 12 V AC so i could get the power needed from the two coils and not from one . But it did not work as I expected because using the middle pin of the 3 pin 12 V AC as ground and placed the 12 v to the two bridges, one for each 9 V , the output was weird. And I haven't even added my circuit to get me +-5 V yet.
So the question is. Can we get a symmetric voltage +-5 V and from the same transformer a 9 V using the same ground for all of them?
I got a 240 V transformer that gives an output of 2 X 12 V AC.
I need to get 2 X 9 V dc and +-5 V dc. My first thought was to get the +9 V DC and ground from each of 2 X 12 V AC so i could get the power needed from the two coils and not from one . But it did not work as I expected because using the middle pin of the 3 pin 12 V AC as ground and placed the 12 v to the two bridges, one for each 9 V , the output was weird. And I haven't even added my circuit to get me +-5 V yet.
So the question is. Can we get a symmetric voltage +-5 V and from the same transformer a 9 V using the same ground for all of them?