Today's Message Index:
----------------------
1. 09:45 AM - Re: alternator field current (nuckollsr)
2. 03:58 PM - New Battery Minder evaulation (Robert L. Nuckolls, III)
3. 07:06 PM - Lightspeed Plasma III Wiring ()
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: alternator field current |
Interesting . . . I've seen some 'heavy duty' regulators in other venues as well.
But I'm at a loss to recall any that even begin to draw that much field current.
A prudent designer of generators and alternators will strive to minimize
the necessary field current.
While field current goes to creating a controllable magnetic flux for the purposes
of mechanical-to-electrical energy conversion, the strength of the field is
proportional to turns of field coil wire multiplied by current in those wires.
It's theoretically possible to generate any desired field flux intensity at any
practical current level. The largest alternators I've worked with needed no
more than 3 or so amps in either 14 or 28v systems. Field current is 100% wasted
energy. 3A at 28V dumps 84 watts of heat directly into the core of the machine.
No doubt someone found value in crafting 'heavy duty' devices CAPABLE of driving
a low resistance alternator field . . . but I think one would be hard pressed
to find such a machine.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=489164#489164
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | New Battery Minder evaulation |
List member Steve Stearns has donated an
excellent candidate for evaluating performance
of a new BatteryMinder Plus that claims to
include 'de-sulfation' technology. The nameplate
rating is 20 a.h. and claims to be a 'deep
cycle' device.
I benchmarked Steve's battery and collected
the following data plot:
Emacs!
I'll put it on the BatteryMinder's maintenance mode and see what
the critter looks
like in about 60 days. Watch this space.
Bob . . .
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Lightspeed Plasma III Wiring |
Does anyone out there happen to have a Plasma III for six cylinder laying
about where you can help me trace the wires from the hall effect 9 PC board
to the 15 pin input connector?
As I mentioned before, the 15 pin input connector on my Plasma III had to be
cut off to remove the engine (firewall hole was too small and I did not want
to unbolt the prop to hang the timing sensors loose) so now I have to field
install the 15 pin connector.
The installation manual is well written however it does not state the colors
of the 9 wires that run from the crank sensor PC board to the 15 pin
connector.
If I knew what colors the wires were that powers channel A / B / C then I
could deduce the respective black and bare wires.
Inside the single large cable are three shielded sub-cables and each
sub-cable has a black wire, a bare non-insulated wire, and then the third
wire is the only difference and that would be either a white or green or red
wire.
Can you please tell me what color wires are connected to the following pins:
Channel A:
PIN 3 of the HALL EFFECT sensor is a ??? wire and it connects to PIN 4 of
the INPUT CONNECTOR (this is a 5 VDC power to the HALL EFFECT sensor and it
shares PIN 4 with channel C) If I knew what color wire was Channel A then I
could deduce the respective black and bare wires.
Channel B:
PIN 7 of the HALL EFFECT sensor is a ??? wire and it connects to PIN 5 of
the INPUT CONNECTOR (this is a 5 VDC power to the HALL EFFECT sensor) If I
knew what color wire was Channel B then I could deduce the respective black
and bare wires.
Channel C:
PIN 4 of the HALL EFFECT sensor is a ??? wire and it also connects to PIN 4
of the INPUT CONNECTOR (this is a 5 VDC power to the HALL EFFECT sensor and
it shares pin 4 with channel A) If I knew what color wire was Channel C then
I could deduce the respective black and bare wires.
If nobody has one of these systems opened up or accessible with the prop off
then I will sadly need to remove the propeller...Grrrrr.
Any help would be greatly appreciated!!!
.
Thanks,
Bill Hunter
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|