I also repair battery chargers. Most of the time all you need is the correct stud mount rectifier diodes and maybe some kind of heat sink if the original is not usable with the new diodes. The only thing I can not fix is a "HOT CHASSIS" cause by a bad transformer. One of the best battery charges in the family is on I built about 25 or 30 years ago. I traded for a old computer transformer. It has a tapped primary and two 6 volt 30 amp secondaries. I connected the secondaries in series as we did not have any 6 volt batteries to charge. I use a single pole double throw switch to access the high and low primary taps. Stud mount diode in a fully wave bridge circuit on heat sinks and a 20 amp ammeter from a old Oliver tractor all in a plastic boat battery box. I think it is in about is fourth battery box and it's second set of diode. On the low side it will charge a almost dead battery at about 10 amp tapering to about 2 amps at full charge. On the high side it will charge at better than 20 amp tapering to about 2 amps when the battery is fully charged. I wish I could find a truck load of these transformers as I would build some more chargers.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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