Search found 326 matches

by kheston
Mon Apr 21, 2008 2:13 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

Just ordered the components for Peter's test circuit from Jameco. Here goes...
by kheston
Sat Apr 19, 2008 9:52 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

Found this while Googling:

http://www.amsterdamhouseboats.nl/voltage_regulator.htm

How hard would it be to replace his manual adjuster with a microcontroller?
by kheston
Thu Apr 17, 2008 8:06 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

CeaSar, Would you be willing to share your wiring diagram? Count on it! - I finally got around to taking some more readings. The frequency counter I have wasn't able to sense the DC ripple, not sure why. So, I tried to fudge something similar by using the stator lead on the alternator and a pulse le...
by kheston
Mon Apr 14, 2008 10:03 am
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

With the field on one alternator connected directly to 12v, I read 2.95A with my DC current clamp. I needed to shut things down, however, bearings were making more noise than I was comfortable with. So, I didn't get a frequency (RPM) reading yet. I went cheap on the alternators and bought them for $...
by kheston
Fri Apr 11, 2008 9:42 am
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

The vertical mounting scheme is certainly not what Ford intended when they designed these alternators, so it's definitely a concern to certain degree. The top bearing is sealed on both sides and serves to control thrust play as well. It's not pressed onto the shaft, but it's bushed and cinched with ...
by kheston
Thu Apr 10, 2008 9:50 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

Oops. Forgot to mention the engine is 18hp.
by kheston
Thu Apr 10, 2008 9:43 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

I bought a DMM today with a DC current clamp sensor and clamped around the 4 gauge battery cable between the unit and the battery bank (2-12v deep-cycles). This is where I got the 220a reading. Worked great! The 18.5v was measured across the battery terminals right thereafter. I saw your post about ...
by kheston
Thu Apr 10, 2008 8:32 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

I bolted my project together and started it up today. The alternators appear to perform magnificently together. Not sure exactly what the RPM was, but at half throttle with all four field wires connected directly to 12v (full-blast), my readings were: 18.5V / 220A Looks like I've built myself a 4kw ...
by kheston
Thu Mar 27, 2008 1:48 am
Forum: General Discussion
Topic: I've pre-ordered mine from Parallax!
Replies: 15
Views: 4299

I've pre-ordered mine from Parallax!

After reading Vern Graner's article in April's issue of N&V I couldn't help but marvel at the tremendous capability of Parallax' upcoming release of their re-designed/modernized Digiencabulator. I hope to have one by April 1st! I couldn't believe it had a range of up to 24v! That's nearly twice the ...
by kheston
Mon Feb 25, 2008 7:53 pm
Forum: General Discussion
Topic: Voltage to serial data
Replies: 15
Views: 4412

This article may get you started:

http://www.edn.com/article/CA159691.html

I'm looking to do something similar to read a 0-20vdc range. I'd be curious to see what you come up with.
by kheston
Fri Feb 22, 2008 11:08 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

I'm closer to the Fremont Fry's, but I used to work down by you. Fry's is horrible about keeping their shelves filled with electronic components like these, but I'll try them first. Maybe I won't have to drive down into the south bay. I went down to the parts store and picked up a test specimen. Her...
by kheston
Fri Feb 22, 2008 7:41 pm
Forum: General Discussion
Topic: Alternator Controller Mk.I
Replies: 41
Views: 10161

Peter, I've got an AC motor that I can drive an alternator with which I'll use as a test apparatus between now and when I actually mount up my gas engine. With the circuit you laid out here, I'll be getting you readings from the leads marked +5v and +10v and armed with them, we'll have more clues as...
by kheston
Wed Feb 20, 2008 10:06 pm
Forum: General Discussion
Topic: Alternators in parallel
Replies: 24
Views: 6282

Phil brings up another thought I'd had. This particular project is only the first unit I'm hoping to build. When I need more power for a house later on I want to set up a Rabbit diesel-based genset like this one: http://utterpower.com/vwdieselgen.htm -or- http://www.oldengine.org/members/jdunmyer/ge...
by kheston
Tue Feb 19, 2008 8:45 pm
Forum: General Discussion
Topic: Alternators in parallel
Replies: 24
Views: 6282

Tell me more about the solid-state servos. Pricey? I think '70s-era regulators were just on/off switches. But, you're suggesting I can have more control. I'm into that! I want this generator to be hands-off once I flip a master switch. That is, I'll just suck power from the batteries with the invert...
by kheston
Tue Feb 19, 2008 1:29 am
Forum: General Discussion
Topic: Alternators in parallel
Replies: 24
Views: 6282

I used to bench-test alternators at one of my after-school jobs as a kid and was under the impression that very little power was required to activate an alternator's field. The little leads we used to do it with didn't appear capable of handling hundreds of watts, even with the alternator under load...