TVC15
Member
Hello,
I have this effectron iii which had serious battery acid damage (along with some other problems) and I've got it almost back up and running BUT
the corrosion ate one of the secondary leads all the way up to tap basically and the wire is like the diameter of a human hair so I was not able to get a lead soldered to it. The unit has a toroidal transformer with 3 secondary windings one at 18V one at 10V and the one that got eaten which I assume is 24V or less since that one is supposed to supply the +12 analog and +12 digital rails. The 18v winding supplies the -12 rail, and the 10v winding supplies the +5 digital and +5 analog rails.
What I'm wondering is can I just use the 18v winding to supply the +12 analog and +12 digital rail as well as the -12, by jumping the 18v input from the -12 bridge rectifier over to the +12 A+D bridge rectifier input? Or is there some good reason not to do that?
I really just don't want to have to buy a new transformer and this unit is only supposed to pull 100 mA of current max according to the fuse.
The attached schematic is not the exact model but the power supply is identical, I've drawn in the two jumpers that I proposed adding.
Thanks for looking!
I have this effectron iii which had serious battery acid damage (along with some other problems) and I've got it almost back up and running BUT
the corrosion ate one of the secondary leads all the way up to tap basically and the wire is like the diameter of a human hair so I was not able to get a lead soldered to it. The unit has a toroidal transformer with 3 secondary windings one at 18V one at 10V and the one that got eaten which I assume is 24V or less since that one is supposed to supply the +12 analog and +12 digital rails. The 18v winding supplies the -12 rail, and the 10v winding supplies the +5 digital and +5 analog rails.
What I'm wondering is can I just use the 18v winding to supply the +12 analog and +12 digital rail as well as the -12, by jumping the 18v input from the -12 bridge rectifier over to the +12 A+D bridge rectifier input? Or is there some good reason not to do that?
I really just don't want to have to buy a new transformer and this unit is only supposed to pull 100 mA of current max according to the fuse.
The attached schematic is not the exact model but the power supply is identical, I've drawn in the two jumpers that I proposed adding.
Thanks for looking!