System comprising an electrical bridge for generating an electrical signal for a load and a control unit for such a system
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United States of America Patent
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-
Nov 10, 2009
Grant Date -
Jun 2, 2005
app pub date -
Dec 23, 2002
filing date -
Jan 30, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A System for generating a PWM output voltage signal include a first half bridge having a first set of switches, and a second half bridge having a second set of switches. A control unit is configured to generate a first PWM switch-signal for switching the first set of switches; to generate a second PWM switch-signal for switching the second set of switches; and to vary at least one of pulse widths and phases of the first and second PWM switch-signals relative to each other for varying a pulse width of a PWM output voltage signal so that the PWM output voltage signal equals zero when the pulse widths of the first and second PWM switch-signals are equal to each other.
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