Hello Salas, I read the instructions, but I did not understand how to connect the two pcb to have the two voltages with a single gnd, as regards the components to have the two tensions I have everything in the house, thanks a lot for the help
All F0 S0 outputs should go to the load's zero power input. +F +S to load's +V power input. F- S- to load's -V power input.
Thanks Salas, it was as I thought. One last thing, if I would need two different voltages like + 27v and -9 v, I would have to take two separate transformers for +27 and -9 or just one and reduce the voltage up to -9v?
Thanks
You may have higher than needed secondary for one polarity, only penalty is the input Mosfet going to dissipate more due to higher voltage drop across it. In any case you need four wire fully independent secondaries because there are two bridges one in each reg.
Salas,
I still have two set of boards that I haven't built yet. Since I have all the parts needed to build one set of boards, I was planning to build at least one set. I will use the ultrabib boards, that I still need to collect all the parts for, for a future project. So with the extra positive board I was going to use it to power 2 analog crossover boards, the lxmini ones in the DIYaudio store. It requires +24V with 75mA load for each. So would a CCA of 275mA work fine? Would a 2x22VA antek transformer work for this? I have an extra 200VA transformer that I could use (seems a bit large for the load, may get a smaller one to put in the chasis later).
I still have two set of boards that I haven't built yet. Since I have all the parts needed to build one set of boards, I was planning to build at least one set. I will use the ultrabib boards, that I still need to collect all the parts for, for a future project. So with the extra positive board I was going to use it to power 2 analog crossover boards, the lxmini ones in the DIYaudio store. It requires +24V with 75mA load for each. So would a CCA of 275mA work fine? Would a 2x22VA antek transformer work for this? I have an extra 200VA transformer that I could use (seems a bit large for the load, may get a smaller one to put in the chasis later).
Both your CCA and transformer voltage choices are good. To save some dissipation see if the crossovers sound as good with 175mA CCA too. So calculate and have extra current set resistors for testing both CCA levels.
I was going to use the same reg to power both boards. To go double mono I would need some more parts for a matching positive regulator. I could always add it later if there is enough room in the enclosure for the extra regulator.
I'm using a SSLV1.1 to power a B1 with Korg Triode which draws only 60mA. Using the calculator it looks like 20Ω resistor in the R101/301 position would be appropriate. I don't have a 20Ω on hand, but I do have 10Ω. Is there a disadvantage to using the 10Ω?
Only disadvantage will be more heat on the PSU's sinks. High spare current is actually advantageous in this version both technically and subjectively.
After installing new LEDs everything seems to work ok. I can adjust voltage with the trim pot. However, after a minute or so of being powered up Q306 gets quite hot and Q301 stays quite cool.
![IMG_3075[1].jpg](https://www.diyaudio.com/community/data/attachments/744/744952-97cc48176c22c0f3163309917af68fa8.jpg?hash=l8xIF2wiwP "IMG_3075[1].jpg")