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Garden Tractors Discussion Forum

Re: 110 Volt AC Campbell Hausfield Generator

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Author  [Modern View]

03-13-2013 11:54:43

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Jim G.

03-13-2013 15:14:48

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 Re: 110 Volt AC Campbell Hausfield Generator in reply to Bob, 03-13-2013 11:54:43  
Sorry to say, but I tried the electric drill trick, and it simply does not work. Why, you ask? Partly because you cannot turn the chuck fast enough by hand to generate sufficient current to excite the fields in the generator. Partly because most small tools of this nature do not hold enough residual magnetism to be an effective generator. I did try flashing one from another generator, and it had only limited success. I suppose there was more current required than I was able to provide. Either way, I concluded that it would require significantly more exciting than I had provided. My result was that the generator that had only produced 7 to 10 volts now produces about 45 volts. At some point, I may try again to excite it.

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joe csuti

03-14-2013 06:13:04

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 Re: 110 Volt AC Campbell Hausfield Generator in reply to Jim G., 03-13-2013 15:14:48  
Most low end AC generators are self excited & are of two designs,brush type & brushless,both types use diodes on field windings to change voltage to DC,check your parts list for same or if you don't have remove end bell/cover on generator & look in same/on generator frame for diodes,same may be inline or stud mount/press fit on a bracket,if either of these doides shorted/open you will get half output voltage/no output from generator,if either diode bad flashing field with drill or ext DC source will not work.

Had same problem on my 40 yr old dayton belt drive brush type generator several yrs ago,was only getting 50v out of generator,checked diodes with an ohmmeter,found one diode shorted,replaced diode & got full 120/240v output back.

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