| 摘要 |
Circuitry for extending the sustain time of a DC converter power supply in the event of interruption of AC power. Where in the circuit includes a capacitor storage element, an associated charge path for controllably charging the capacitor bank and discharge and disconnect paths for discharging the energy stored in the capacitor to sustain operation of the DC power converter and for disconnecting the capacitor from the DC converter when the voltage across the capacitor has discharged below a threshold level and prevents the capacitor from creating and introducing periodic ringing transient oscillations into the same charging means, with the charging means and discharging means therefore being connected to said DC voltage source to provide a charging path to said raw DC voltage source during normal operation of the AC power source, and a discharging means to provide a discharging path for said capacitor means to sustain operation of a power converter means during momentary interruption of the AC power source and to disconnect said capacitor means from the DC source means and dc converter means wherein said capacitor means has been discharged to a minimum level required to insure proper operation of said power converter means.
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