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<blockquote data-quote="Terryl" data-source="post: 1105910" data-attributes="member: 369937"><p>Well here state side we have 3 phase AC power, to the house they only run two of those phases into a step down transformer, this give us 110/120 volts on each phase coming into the house, each of these phases is 120 degrees out from the other, combining the two into a motor gives you 220/240 volts, and runs the motor just fine.</p><p></p><p>Now a normal 110/120 volt light bulb has one phase to the center pin, and the base is at neutral. (zero volts)</p><p></p><p>In the setup I have for the 220/240 volt motors I have one phase to the center pin of a regular 240 volt light bulb, the second phase is to the base, (normally at zero volts) this setup works fine.</p><p></p><p>Now on a LED type light bulb the center pin goes into a AC to DC rectifier and stepped down to the correct voltage for the LED's DC circuitry, the base should be at zero volts, and is the normal ground for the AC to DC converter circuit.</p><p></p><p>Now this should not be a problem<strong> IF</strong> the voltage on the center pin is at 220/240 volts AC and the base at zero volts,(neutral) the setup I have will put 110/120 volts on the center pin and the base will be at 110/120 volts above what should be at zero. (neutral)</p><p></p><p>Now will the fact that the base will be at a high plus (+110/120) voltage, then drop to zero, then go to a low negative (-110/120) voltage cause a problem and blow the snot out of the DC rectifier circuitry.</p><p></p><p>I found this online for a standard LED bulb AC to DC circuit, but nothing for the questions I have.</p><p></p><p>[ATTACH=full]134589[/ATTACH]</p></blockquote><p></p>
[QUOTE="Terryl, post: 1105910, member: 369937"] Well here state side we have 3 phase AC power, to the house they only run two of those phases into a step down transformer, this give us 110/120 volts on each phase coming into the house, each of these phases is 120 degrees out from the other, combining the two into a motor gives you 220/240 volts, and runs the motor just fine. Now a normal 110/120 volt light bulb has one phase to the center pin, and the base is at neutral. (zero volts) In the setup I have for the 220/240 volt motors I have one phase to the center pin of a regular 240 volt light bulb, the second phase is to the base, (normally at zero volts) this setup works fine. Now on a LED type light bulb the center pin goes into a AC to DC rectifier and stepped down to the correct voltage for the LED's DC circuitry, the base should be at zero volts, and is the normal ground for the AC to DC converter circuit. Now this should not be a problem[B] IF[/B] the voltage on the center pin is at 220/240 volts AC and the base at zero volts,(neutral) the setup I have will put 110/120 volts on the center pin and the base will be at 110/120 volts above what should be at zero. (neutral) Now will the fact that the base will be at a high plus (+110/120) voltage, then drop to zero, then go to a low negative (-110/120) voltage cause a problem and blow the snot out of the DC rectifier circuitry. I found this online for a standard LED bulb AC to DC circuit, but nothing for the questions I have. [ATTACH type="full"]134589[/ATTACH] [/QUOTE]
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