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 - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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