|
Tractor Talk Discussion Board |
Behind the eight (volt) ball
[ View Follow Ups ] [ Post Followup ] [ Return to Tractor Talk Discussion Board ]
Posted by Fred Martin on January 20, 2000 at 16:10:02 from (208.32.116.17):
Hi all from Fred
Okay, first off, go easy on the flack fellers cause I'm a light weight. But I don't think I found out how to charge an eight volt battery on the posts a couple of weeks ago. I didn't get in that heated controversy and I don't want to start it all over again. So, I don't have a degree in electrical engineering, an advanced ham license is my only claim to fame in electronics and that takes quite a bit of theory. (As some may know).
The charger doesn't have 8 volts so lets use 12 volts with a series dropping resistor. We'll call the high voltage 14.4 and the low voltage 9.6 volts. Formula for voltage drop is: hi voltage minus low voltage over current. (Remember Ohm's Law). (We'll call the current 10 amps) This means we need about a half ohm resistor in series with one leg of the charger. After checking, I found that a 12 volt #1157 bulb was about right (ohms wise). This would probably light the bulb pretty good when the battery is charging and dim as battery is charged up and limit the amount of current going into battery. I don't have an 8 volt battery, so I didn't try this. Some of you ambitious fellers can work it out and market it if you want, it's needed. But you have to give all us tractor guys and gals a freeby on what the dropping resistor is. Incidentally, everything I read in that post was true (to me) but as the man said "its dangerous". Lets find a safe way.
Fred from the Mung Factory
Follow Ups:
Home
| Forums
Today's Featured Article -
Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
Copyright © 1997-2024 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|
