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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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UPC trouble!
I have a Tripp Lite BC-450 UPC, that works, but puts out 145 volts AC,
instead of the normal 120 vlots AC. I can't find any semiconductors shorted, or overheating, it just runs at too high an output. I'm using a fully charged acid 12 volt car battery as it's source! Input anyone? Dani. |
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#2
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UPC trouble!
"Dani" wrote in message ups.com... I have a Tripp Lite BC-450 UPC, that works, but puts out 145 volts AC, instead of the normal 120 vlots AC. I can't find any semiconductors shorted, or overheating, it just runs at too high an output. I'm using a fully charged acid 12 volt car battery as it's source! Input anyone? Dani. How are you measuring the voltage? Many meters will not give accurate RMS readings with the modified sine wave waveforms most of the UPS generate. David |
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