Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1996-05-01
1998-04-07
Sterrett, Jeffrey L.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323225, 323271, H02M 3155
Patent
active
057368414
ABSTRACT:
The switching power supply attains sinusoidal input current even at a low level of the input voltage. In one embodiment, a node voltage appears between the input terminal and node. A grounded capacitor stores an intermediate voltage. A grounded inductor attains a current. One diode applies the current to the capacitor. Another diode applies the current to the node. A switch selectively applies the intermediate voltage to the node. A boost type converter converts the node voltage into the output voltage. Another switch can be coupled in series with the input terminal to prevent the inrush current.
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