Im planning to add this to my existing supply. I know I can use NEG regs and it makes this alot easier, but I dont have any in hand. The supplies are isolated and connected through two bridges. I know the unregulated supply works since it is powering a mono class A amp; I used a DC supply symbol in place of the PS rails. Judging from this circuit, U2 looks to work fine, supplying 12V regulated output. (or -12V if you like to be technical) But I am not so sure about U1. Plus, since the input for U1 has no reference, Im not sure what voltage it will actually "see" from the ground. And if I assume that it will see a total of 48-12=38, thats awfully close to the 40V limit. Also, the GND reference is also changed now in comparison of the GND of the overall amp. Im no expert in PS design, any thoughts or opinions? Any way I can make this work using this REGs?
BTW, I cannot tear the supply to split the bridges to make it work, or else I wouldnt be posting this. My supply rails looks like this:
+24V
+
+
+
0V/GND
-
-
-
-24V
BTW, I cannot tear the supply to split the bridges to make it work, or else I wouldnt be posting this. My supply rails looks like this:
+24V
+
+
+
0V/GND
-
-
-
-24V
Attachments
-
18.4 KB Views: 73