rbstep wrote:I have at least 4 projects I can use the classic PSU board with.
Keep in mind: WIth the Triad FP24-250. Under a load that is running 13ma, it draws the high voltage down to about 170VDC. At 10.5 ma, it is about 182VDC and about about 8.2ma, it is around 200VDC. So, depending on the load, your voltage will pull down.
Keep in mind, that this power supply can provide over 200VDC for 2 or 3 preamps, and about 200VDC for a 12AU7 at 1 Watt, or 182VDC for a 12AU7 at 1.8 watts, or about 170VDC for a 12AU7 at about 2.5 watts. What I am getting at is that you really need to determine the load you will be putting on the PSU and what your load in milliamps and VDC requirements will be.
I am preparing to modify a PSU board design to handle the FP24-500 transformer which is quite a bit larger and can handle about twice the load. I may keep this current PSU board as an option, we will see. One of the problems I am running into is that I am already running into a maximum board length for my license of the board design software. And upgrading the software is expensive, so, I may have to keep the length the same and fatten the boards width to get the FP24-500. I am going to try it, but it will be starting to get large.
Currently the board size is 3.89 inches by 2.1, but for the bigger transformer, we are getting up to 2.5 or 2.75 by 3.9 inches. Doesn't sound like much, especially if you are going to go with a larger enclosure, but to keep it within a standard Hammond 1590XX enclosure, it is getting too big! Despite the board not being extremely complicated, because of its size, it will probably be the most expensive board to fabricate so far... http://frogpedals.com