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Old 12-18-2009, 10:19 AM   #212 (permalink)
apowers
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watt-a-mezz
I used the transformer from an old microwave. The "E" and "I" are welded together
but can easily be hack-sawed apart. The weld is soft and only about 1/16" thick.
I had been using a light dimmer to control voltage for acceptance part of charge
The dimmer will not hold the voltage down anymore. I am in the process of basically
building a controller to replace the dimmer. I am using athe MC33033 chip (not smart)
but should work...maybe. I used the fan from the microwave to cool everything.
I am using the small transformer from the control board of the microwave to power the contoller from the mains.
I know this is not how the Bonn charger was designed but I did not have
any luck with multiple leads from the inductor. Lee Hart had told me that the transformer
from an old battery charger would work.
Alvin
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