Tractor Talk Discussion Board |
Re: Why positive ground?
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by T_Bone on November 03, 2004 at 11:17:57 from (4.240.132.61):
In Reply to: Why positive ground? posted by Rosy on November 02, 2004 at 17:36:25:
Well I think if you look at how the welding process works would explain the disavantages of a negitive ground DC current system. Electron flow is from negitive to postive when dealing with DC current in welding resistance applications. In welding terms this is called straight polarity. Reverse polarity is when the electrode is positive and the work piece is negitive. With using straight polarity while welding, metal is transfered from the electrode (negitive) to the work piece (positive) (also called base metal) where alot of heat is generated on the work piece. This lets us use a cooler electrode and transfers alot of metal very fast to the work piece. Using straight polarity works well as the work piece in this case absorbs more heat than the electrode and can handle more heat input than the electrode as the work piece has more mass than an electrode. The same can be said of positive ground battery systems. Most of the heat will be generated in the tractor frame and not in the electrical componet. Since heat is a killer to componets of most electrical devices then a positive ground systems should last longer. I think if you did a side by side comparrision, positive ground compnets will by far out last negitive ground componets. Like Mark (txblu) pointed out, until the inventors of transistors changed there thinking of electron flow, the transistor could not work. In electronic semi-conductor circuits electron flow is always positive to negitive. T_Bone
Follow Ups:
Home
| Forums
Today's Featured Article -
Check Your Coolant - by Bill Radford. Great tips on how and when to check the coolant in your tractor.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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 |
|