1. A power conversion system in an electronic device, for converting an input voltage of a power source terminal to a required voltage of a load circuit to provide power to the load circuit, the power conversion system comprising:
a first voltage conversion circuit, coupled to the power source terminal for converting the input voltage to the required voltage of the load circuit according to a first control signal; and
a power control module, coupled to the first voltage conversion circuit and the load circuit for generating the first control signal according to a starting signal turning on the load circuit or a load voltage of the load circuit;
wherein the load circuit is coupled to the first voltage conversion circuit, receives the voltage outputted from the first voltage conversion circuit to perform operations, and outputs the load voltage to the power control module.
2. The power conversion system of claim 1, wherein the electronic device is a display panel device and the load circuit comprises a driving circuit and a display component of the display panel device.
3. The power conversion system of claim 1 further comprising:
a second voltage conversion circuit, coupled to the power source terminal for converting the input voltage to the required voltage of the load circuit;
wherein the load circuit is coupled to the first voltage conversion circuit and the second voltage conversion circuit, receives the voltages outputted from the first voltage conversion circuit and the second voltage conversion circuit, and outputs the load voltage to the power control module.
4. The power conversion system of claim 3, wherein the first voltage conversion circuit is a voltage conversion circuit of inductor type and the second voltage conversion circuit is a voltage conversion circuit of capacitor type.
5. The power conversion system of claim 3, wherein the second voltage conversion circuit is not controlled by signals and constantly converts the input voltage to the required voltage of the load circuit.
6. The power conversion system of claim 3, wherein the second voltage conversion circuit is coupled to the power control module for converting the input voltage to the required voltage of the load circuit according to a second control signal generated by the power control module.
7. The power conversion system of claim 6, wherein the first control signal generated by the power control module is utilized for controlling the first voltage conversion circuit whether to perform operations, i.e. whether to output the converted voltage to the load circuit, and the second control signal generated by the power control module is utilized for controlling the second voltage conversion circuit whether to perform operations, i.e. whether to output the converted voltage to the load circuit.
8. The power conversion system of claim 7, wherein the power control module controls the second voltage conversion circuit to perform the operations before controlling the first voltage conversion to stop performing the operations.
9. The power conversion system of claim 7, wherein when the starting signal has not activated the load circuit, the power control module controls the second voltage conversion circuit not to perform the operations via the second control signal; and when the starting signal has activated the load circuit, the power control module controls the second voltage conversion circuit to start performing the operations before controlling the first voltage conversion to stop performing operations.
10. The power conversion system of claim 7, wherein the power control module controls the second voltage conversion circuit to start performing the operations via the second control signal when determining the voltage value of the load voltage is greater than a predetermined value.
11. The power conversion system of claim 1, wherein when the starting signal has not activated the load circuit, the power control module controls the first voltage conversion circuit not to perform the operations via the first control signal; and when the stating signal has activated the load circuit, the power control module controls the first voltage conversion circuit to start performing the operations via the first control signal at a first turn-on time and the power control module controls the first voltage conversion circuit to stop performing the operations via the first control signal at a first turn-off time after the first voltage conversion circuit starts performing operations.
12. The power conversion system of claim 1, wherein when the starting signal has not activated the load circuit, the power control module controls the first voltage control circuit not to perform the operations via the first control signal; and when the starting signal has activated the load circuit, the power control module controls the first voltage conversion circuit to start performing the operations via the first control signal at a first turn-on time and the power control module controls the first voltage conversion circuit to stop performing operations via the first control signal when determining the voltage value of the load voltage is greater than a predetermined value.
13. The power conversion system of claim 1, wherein when the starting signal has not activated the load circuit, the power control module controls the first voltage control circuit not to perform the operations via the first control signal; and when the starting signal has activated the load circuit, the power control module controls the first voltage conversion circuit to start performing the operations via the first control signal when determining the voltage value of the load voltage is not greater than a predetermined value and the power control module controls the first voltage conversion circuit to stop performing operations via the first control signal at a first turn-off time after the first voltage conversion circuit starts performing operations.
14. The power conversion system of claim 1, wherein when the starting signal has not activated the load circuit, the power control module controls the first voltage control circuit not to perform the operations via the first control signal; and when the starting signal has activated the load circuit, the power control module controls the first voltage conversion circuit to start performing the operations via the first control signal when determining the voltage value of the load voltage is not greater than a predetermined value and the power control module controls the first voltage conversion circuit to stop performing operations via the first control signal when determining the voltage value of the load voltage is greater than the predetermined value after the first voltage conversion circuit starts performing operations.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A cover assembly for use with a floor box of the type having an interior compartment which is accessible through an opening in the surface of the floor, the cover assembly comprising:
a bracket connectable to the fitting and defining an access opening which aligns with the floor opening;
at least one access door connected to the bracket for movement between a closed position at which the door overlies and closes the access opening and an open position at which the access opening is exposed to provide access to interior compartment, the access door including a size cable opening which is sized to permit at least one cable to pass through the door and into the fitting when the door is at its closed position; and
a seal member carried by the access door and being adapted to seal around cables passing through the cable opening when the access door is moved to its closed position.
2. The cover assembly as set forth in claim 1, wherein the seal member comprises a compressible gasket.
3. The cover assembly as set forth in claim 1, wherein the seal member substantially seals the cable opening.
4. The cover assembly as set forth in claim 1, wherein the access door is pivotally connected to the bracket for movement between its open and closed positions.
5. The cover assembly as set forth in claim 1, further comprising an egress cover plate movably connected to the access door between a first position which overlies the cable opening and a second position at which the cable opening is exposed.
6. A cover assembly for use with a floor box of the type having an interior compartment which is accessible through an opening in the surface of the floor, the cover assembly comprising:
a bracket connectable to the fitting and defining an access opening which aligns with the floor opening;
first and second access doors connected to the bracket such that the doors can be opened to provide access to the inner compartment through the access opening and can be closed to cover access opening to prevent access to the inner compartment, the first and second doors defining a reduced size cable opening therebetween when the doors are at their closed position, the cable opening being sized to permit at least one cable to pass between the doors and into the interior compartment, at least one of the doors including a seal member which is adapted to seal around cables which pass through the cable opening.
7. A cover assembly as set forth in claim 6, wherein each of the doors includes a respective seal member adapted to seal around cables which pass through the egress opening.
8. A cover assembly as set forth in claim 7, wherein the seal members abut against one another to seal the cable opening when no cables are present in the opening.
9. A cover assembly as set forth in claim 7, wherein the seal members comprise compressible gaskets.
10. A cover assembly as set forth in claim 7, wherein the first and second doors each door include a respective egress cover, the egress covers being movably connected to the doors for selectively exposing and covering the cable opening.
11. A cover assembly for use with a floor box of the type having an interior compartment which is accessible through an opening in the surface of the floor, the cover assembly comprising:
a bracket connectable to the fitting and defining an access opening which aligns with the floor opening and is divided into first and second portions;
a first access door pivotally connected to the bracket for movement between a closed position at which it overlies the first portion of the access opening and an open position at which the first portion of the access opening is exposed;
a second access door pivotally connected to the bracket for movement between a closed position at which it overlies the second portion of the access opening and an open position at which the second portion of the access opening is exposed;
the first and second access doors defining a cable opening therebetween when the doors are at their closed position, the cable opening being sized to permit at least one cable to pass between the doors and into the interior compartment of the fitting; and
the doors including cooperating seal members which are adapted to seal around cables passing through said cable opening when the doors are moved to their closed positions.
12. A cover assembly as set forth in claim 11, wherein the first and second doors each door include a respective egress cover, the egress covers being movably connected to the doors for selectively exposing and covering the cable opening.
13. A cover assembly as set forth in claim 11, wherein the seal members comprise compressible gaskets.
14. A cover assembly for use with a floor box of the type having an interior compartment which is accessible through an opening in the surface of the floor, the cover assembly comprising:
a bracket connectable to the fitting and defining a generally rectangular access opening which aligns with the floor opening and is divided into first half and a second half;
first and second access doors connected to the mounting bracket, each access door having a pivot end which is pivotally connected to the bracket and a free end which is movably about the pivot end between an open position at which a portion of the access opening is exposed to provide access to the interior compartment and a closed position at which the access door covers a portion of the access opening;
the free ends of the doors defining a cable opening therebetween when the doors are at their closed position, the cable opening being sized to permit at least one cable to pass between the doors and into the interior compartment; and
each of the access doors including a compressible gasket carried by its free end, the compressible gaskets being positioned to abut with one another when the doors are moved to their closed position so as to seal the cable opening and seal around any cables passing therethrough.