The reason that the graphs are somewhat incomplete is that we don't have a production PFC-50 running yet in a full buck enhanced configuration. This should happen by Labor day.
The graphs on the PFC-50 web page are from the preproduction prototype (hairball) unit that is not robust enough to transport nor run the buck enhancement option. I hate it when the 80 amp output fuse in the charger gets in the way of testing. The buck enhancement page is based on the second production run PFC-20. The third production run makes more power but the graphs have not been updated. The first and second production runs have a power dip at 170 VDC out from 110 VAC and at 320 VDC from 240 VAC. This is visible on the PFC-20 (http://www.manzanitamicro.com/pfc20a.htm) and buck enhancement (http://www.manzanitamicro.com/bucke.html) pages. The third production run does not have this power dip as shown on the PFC-50 page (http://www.manzanitamicro.com/pfc50.htm). Joe Smalley Rural Kitsap County WA Fiesta 48 volts NEDRA 48 volt street conversion record holder [EMAIL PROTECTED] > Anyways, have had my ear to the rail a bit on your chargers. I > was pleasantly surprised looking at your PFC-50 page (July 2002 > test) that a 100V pack will run the charger maxed out at about > 50A DC into the pack, given 50A from a 120VAC line (ain't going > to happen unless it's half of a 240V 14-50); or 80A DC in to the > pack from 208VAC at 50A (don't know anything that will do that, > but I can probably grab 30A AC from one of the Avcon paddles, so > would have to back off); or a juicy 14-50 240VAC capable of > running at 50A would likely get me close to 75A DC into the pack > (although the DC curve in the graph disappears below 125VDC). > All these assume the Buck Enhancer. Have people had better luck > with the Buck Enhancer than the K&W booster (for packs over > 108VDC on a 120VAC line), since many of the K&W boosters burnt up > or otherwise failed, and is the Buck Enhancer a big monster? > What kind of amps would I see without the Buck Enhancer (don't > have a graph for that)? > > The colors were a little hard to differentiate on the PFC-50 Buck > Enhancer graph, but once I dug into it, I was able to figure them > out.
