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12 volt sources: https://bit.ly/-fonte12v- here is a homemade source made by myself, a 12 volt DC source. To make this source you need a 9 volt AC current transformer and a rectifier bridge or diode bridge. see how to make the diode bridge in: • Rectifier bridge with diode after rectified, the 9 volts AC voltage becomes 12 volts in DC current, it is necessary to add a 25 volts capacitor of 2200uF to filter the current subscribe to this channel for more news!