I can't get the 14 VCD from the Optimized PSU

MIDIbox SID
1

Hi . .  i think i did everithing right, more than think, I’m sure about it. But  I can’t get the 14 VCD from the PSU.

I get the 5VDC out, but not the 14. Any ideas ?

2

I don’t think you have done everything right :wink:

You should be able to measure +14VDC between the ground and the output of the 7809 regulator. Did you realize, that 7809 “common” (or middle) pin is connected to PSU +5VDC?

Bye, Moebius

3

Yes , the middle pin is connected to the +5VDC circuit . . .  I get 2-7 VCD when i measure it with the multimeter … any answer moeb ?

4

Is the 7809 regulator in correct orientation?

Have you checked the PSU that the 9VAC lines work? If I remember correctly, there is a fuse for 5 VDC and another one for 9 VAC inside the PSU.

5

Thanks, It’s ok now . . . I solved the problem debugging the SID module. Thanks a lot for your help.