Recent content by Knuckles

I got the idea from this source ... http://www.celnav.de/hv/hv9.htm (scroll thru) I expect a three phase 'generator' at 20-50 kHz would be good. At higher frequencies the system is more efficient and smaller caps will work for a given power input. Individual battery cells act as...

Maybe something like this ... Horizontal Version Vertical Version

First Rule of "Fight Club"?

Gosh, leave for a little while and all HELL breaks loose! (I never really “left” ES, just been busy with “stuff”) I am really GLAD that Justin is now the “Custodian” of ES. It is the BEST thing that could have happened. I really hope he embraces his “Stewardship” and proudly places his...

There's only ONE BANNER I'd like to see on ES .... www.ebikes.ca 8)

Dirt cheap switching diodes ... at 25C ... 0.1 ma - 0.5v drop, 1.0 ma - 0.6v drop, 5.0 ma -0.7v drop When the key switch is "on" the I(f) is between 10 and 15 ma for EVERY primary emitting diode (the C-E is saturated) But as a cell V drops the primary C-E voltage decreases to 0.1v and the...

I calculate ... 0.6 + 0.6 + 0.9 + 0.1 = 2.2V and 0.7 + 0.7 +1.2V + 0.2 = 2.8V Plus I like the "key off" dark current of only 100 nA. And I'm also a cheap bastard! :lol: And Lazy too!

ergo "moronically" simple ... but a LVC at 2v and room temp is better than no LVC at all. :)

Moronically Simple LVC Circuit If any cell goes low the +12v ebrake circuit kicks in High res ... http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=160-1370-5-ND ***

And it can also be "double capped" if you want to get really nutty ... reference

XieChang Controller Regen (All Models): 1) Regen DOES NOT bring wheel to complete stop. 2) Regen has an upper (programmable) voltage limit (HVC or high voltage cut-off). 3) You can't "regen" more current than your battery chemistry/size can accept at the HVC. 4) Front wheel Direct Drive...

Very cool ... I'm a Clarkson Grad 84' ChE

Not my drawing ... found it on-line. Absolutely fascinating topic texaspyro. I do look forward to some of your conceptual schematics.