Posted by Bob on October 31, 2007 at 19:42:22 from (69.178.229.154):
In Reply to: diode question posted by keith smith on October 31, 2007 at 19:07:36:
WHY are you leaving the ignition switch "ON" without the engine running???
It serves NO purpose, and will burn the points, and overneat the ignition coil, IF the engine has stopped with the breaker points closed.
That being said, when the engine is RUNNING, the diode is reverse-biased, and carries no current.
The alternator's internal diode trio rectifies a portion of the stator's output to power the rotating field winding, through the voltage regulator. As the battery voltage comes up, field current drops, and field current drops.
When the engine is stopped, battery voltage has dropped enough to cause the regulator to ramp up the field current to "max", 3 to 5 Amps, which is now "sourced" through the diode, from the ignition circuit. That's why your diode is heating up. NOW SHUT THE DARNED KEY "OFF" BEFORE YOU BURN THE POINTS!
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
... [Read Article]
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.
