[quote= sjd007 ...
" where exactly would my bridge rectifier go? "
____ Well '
electrically',, in the case of being connected-up to a '
grounded' power-coil (meant for the stock magneto-
like ign.circuit), the power-coil's single-output/feed should be connected to the bridge-rectifier's AC.input(s).
Then that-way, the positive & negative outputs of the b.rect unit would be-so polarized relative rather to 'ground' (instead-of to each-other, as is
normally the case).
That resultingly divides-up the AC.power (into
separate neg & pos p.DC-outputs) so that it ALL doesn't have-to get circuited to
just the ign.system alone ! _ (And of-course the ET.type ign.system itself, doesn't suffer
any loss whatsoever [without the missing/excess-half of the AC],, since the-half of the AC that's rather diverted, would otherwise be
completely FUNCTIONLESSLY 'shorted-out' directly to ground [through the ign.points] and
totally-WASTED, anyhow
!)
Is it ok to ground two terminals on the rectifier ie
Gnd___Gnd
| |
AC___ DC+
Sort of thing?
____ Not sure of exactly what
you're suggesting, but if I got-it as you've intended,, then I'd say 'no', since BOTH ground-circuits in question, are of the very-
same power-circuit. - (Sort-of the same-thing as running two
uninsulated wires
together through the same harness-conduit, and-yet expect their assigned circuit-current's flowing electrons to stay loyally confined to their-own respective wires [rather than accept the opportunity to take the shortest-circuit, as electron-flow is rather apt to do].)
" Using the Ignition feed to recycle wasted power? "
____ The amount of AC.power that's WASTED by the ign.system, is certainly quite SIGNIFICANT,, but none of it can really be "
recycled" per-se ! _ Instead,
HALF of the supplied AC can be rather '
diverted' away from being entirely short-circuited straight-through the ign.points, with the use of just
one-pair of diodes ! _ However, a commonly-available bridge-block can be rather handy for performing the AC.halves separating-job though !
After separating the
useful-half of the AC for the ign.system, the otherwise regularly wasted-half can then be rather saved & diverted to power
another load (of most any sort).
__ I have more related details to tell about this option, if really interested !
So if you still have any more specific/related questions, I'll be glad to specifically address them.
" as I have bought some high power COB (warm white to look authentic) LED chips which draw 700mA each and are quoted at 1200lumens. I'd mount them on a flat bar and one facing upwards for dip, and both running up and down(1.4A) for full beam. "
____ Seems like a great plan ! _ So it would be pretty-nice if you'd start a dedicated thread on the subject and show & tell us all about it !
If your chosen LED-chips are-not already preset to be intended for a 'grounded-system', THEN you could still possibly full-wave rectify a stock/grounded power-coil, and
rather run
twin-lead wiring.
__ So anyhow,, I
gather that since you'd thusly be saving at-least 3.5-amps, that you'd thus-then expect to have plenty of reserve-power leftover to also fully power any brake-light as well. _ Is that not correct ?
But even-so, you
still couldn't power-up a worthy/DC horn.
" On my benchtop supply, "
____ But
it's likely FULL-wave & cap.filtered, right ?
" they gave a good output even down to 6V with the supplied drivers "
____ That's going to work well enough whenever your RPMs are kept rather low BUT,, with such a rather
low load on the lighting power-coil, the voltage-level during
high-RPMs may quite possibly build-up high enough to overwhelm the supplied drivers !
__ So-then what's been your expected plan to control your (
lighting-coil powered) intended batteryless-system's likely excessive power-level ? _ Have you been considering the inclusion of some kind of voltage-limiting circuit (to protect your intended low-power lighting-system from becoming
over-powered during high-RPM) ?
__ There's been good-reason for why Ducati had always made fair attempt to closely '
MATCH' the power-output (of their power-production systems) with the power-consumption (of their expected load-systems), so as to avoid such over miss-balancing.
I-myself am thinking that perhaps the ign.power-coil could possibly handle ALL
your-intended (rather low power) power-needs, all on it's own,, and thusly come closer to being balanced.
" I'll figure out how to post a pic of the parts that are about to become a motorycle... "
____ I've copied the following post-wording from another (rather obscure) section of this w.site. _ I hope it helps !
____ And for anyone else who's not clear on exactly how to submit your intended pictures along with you post here (at this w.site), here's the method I suggest (so as to not somehow loose you post-wording in the process)...
__ After you've safely gotten your text posted, (and you're still logged-in at this w.site), note the 'EDIT' button (directly to the Right of your post's Title), included on your post-page (which you wish to add digital-pics to), and click on that edit-button,
then scroll-down towards the bottom of the presented page (which allows for editing), and click on the 'Upload attachment' button...
You will then be presented with a 'Browse' button of which clicking-on will then provide the means to locate any pictures which you already have stored (in some folder) within your PC.
After you've double-clicked on a chosen picture*, you may add a 'File comment' and then click the button: 'Add the file' .
You may repeat that process twice more (for 3 pix per post),
and when you're ready to finally add your pictures to your post, you can then click on the 'Submit' button, which will then present you with your (completed) posting, just as usual.
(* Keep in mind that the first added picture/file will end-up placed in the bottom-position [in the case of more than one picture per post].)
Hopeful-Cheers,
DCT-Bob
Now twice edited !