1. A bias and discharge system for discharging at least one differential capacitor of an input filter coupled to an AC differential input of a power supply, wherein the power supply includes a full wave rectifier coupled to the input filter for developing a DC bus voltage and includes a voltage converter with a controller for converting the DC bus voltage to a regulated output voltage, said bias and discharge system comprising:
a rectifier for coupling to the AC differential input which cooperates with the full wave rectifier to develop a DC bias voltage on a DC bias node;
a bias system receiving said DC bias voltage and providing at least one start-up voltage for use by the controller; and
wherein said bias system includes at least one current discharge path coupled between said DC bias node and a reference node for discharging the at least one differential capacitor within a predetermined time period when AC line voltage is removed.
2. The bias and discharge system of claim 1, wherein the AC differential input comprises a line input and a neutral input, and wherein said rectifier comprises a first diode having an anode for coupling to the line input and a cathode coupled to said DC bias node, and a second diode having an anode for coupling to the neutral input and a cathode coupled to said DC bias node.
3. The bias and discharge system of claim 1, wherein said bias system comprises a start-up regulator for providing a supply voltage to the controller.
4. The bias and discharge system of claim 1, wherein said bias system comprises:
a first resistor coupled between said DC bias node and a gate node and a Zener diode having a cathode coupled to said gate node and an anode coupled to said reference node;
a second resistor coupled between said DC bias node and a supply node, wherein said supply node provides a start-up supply voltage for the controller of the voltage converter;
a transistor having a first current terminal for coupling to the DC bus voltage, having a control terminal coupled to said gate node, and a having second current terminal; and
a diode having an anode coupled to said second current terminal of said transistor and having a cathode coupled to said supply node.
5. The bias and discharge system of claim 4, wherein said bias system further comprises a resistive discharge path coupled between said DC bias node and said reference node providing an input sense voltage for use by the controller for sensing an input voltage level.
6. The bias and discharge system of claim 1, wherein said bias system comprises a resistive discharge path coupled between said DC bias node and said reference node which provides an input sense voltage for use by the controller for sensing an input voltage level.
7. The bias and discharge system of claim 1, wherein said bias system comprises:
a first resistor coupled between said DC bias node and an intermediate node;
a second resistor coupled between said intermediate node and said reference node; and
a delay circuit coupled between said intermediate node and said reference node having an output node providing an input sense voltage for use by the controller.
8. The bias and discharge system of claim 7, wherein said delay circuit comprises:
a first capacitor coupled between said intermediate node and said reference node;
a second capacitor coupled between said output node and said reference node;
a diode having an anode coupled to said output node and a cathode coupled to said intermediate node; and
a third resistor having a first end coupled to said output node and a second end coupled to said intermediate node.
9. The bias and discharge system of claim 1, wherein said predetermined time period is within one second.
10. A power supply, comprising:
an AC line input and an AC neutral input;
a filter comprising at least one differential capacitor coupled between said AC line and neutral inputs;
a full wave rectifier coupled to said AC line and neutral inputs for developing a DC bus voltage on a DC bus node;
a converter which converts said DC bus voltage to a regulated output voltage, said converter including a controller;
a second rectifier coupled to said AC line and neutral inputs for developing a DC bias voltage on a DC bias node; and
a bias system coupled between said DC bias node and a reference node which provides at least one start-up voltage to said controller, wherein said bias circuit includes at least one current discharge path for discharging said at least one differential capacitor within a predetermined time period when AC line voltage is removed.
11. The power supply of claim 10, wherein:
said controller has a supply voltage input; and
wherein said bias system comprises a start-up regulator which develops a supply voltage provided to said source voltage input of said controller to initiate operation of said controller.
12. The power supply of claim 11, wherein said converter further comprises a supply voltage circuit coupled to said source voltage input of said controller which increases said supply voltage when said converter is active which turns off said start-up regulator.
13. The power supply of claim 10, wherein said bias system comprises:
a first resistor coupled between said DC bias node and a gate node and a Zener diode having a cathode coupled to said gate node and an anode coupled to said reference node;
a second resistor coupled between said DC bias node and a supply node, wherein said supply node provides a start-up supply voltage for said controller;
a transistor having a first current terminal coupled to said DC bus node, having a control terminal coupled to said gate node, and a having second current terminal; and
a diode having an anode coupled to said second current terminal of said transistor and having a cathode coupled to said supply node.
14. The power supply of claim of claim 13, wherein said bias system further comprises:
a third resistor having a first end coupled to said DC bias node and having a second end coupled to an input voltage sense node;
a fourth resistor coupled between said input voltage sense node and said reference node; and
wherein said input voltage sense node is coupled to a sense input of said controller.
15. The power supply of claim 10, wherein said bias system comprises:
a first resistor having a first end coupled to said DC bias node and having a second end coupled to an intermediate node;
a second resistor coupled between said intermediate node and said reference node; and
a sense system coupled between said intermediate node and said reference node and having an output node providing an input sense voltage to a sense input of said controller.
16. The power supply of claim 15, wherein said sense system comprises:
a first capacitor coupled between said intermediate node and said reference node;
a second capacitor coupled between said output node and said reference node;
a diode having an anode coupled to said output node and a cathode coupled to said intermediate node; and
a third resistor having a first end coupled to said output node and a second end coupled to said intermediate node.
17. The power supply of claim 10, wherein:
said filter comprises:
a first differential capacitor coupled between said AC line input and said AC neutral input;
a first common mode inductor having a first winding coupled between said AC line input and a first node and having a second winding coupled between said AC neutral input and a second node;
a second differential capacitor coupled between said first and second nodes;
a second common mode inductor having a first winding coupled between said first node and a third node and having a second winding coupled between said second node and a fourth node;
a third inductor having a first end coupled to said third node and a second end coupled to a fifth node; and
a third differential capacitor coupled between said fourth and fifth nodes; and
wherein said second rectifier comprises:
a first diode having an anode coupled to said third node and a cathode coupled to said DC bias node; and
a second diode having an anode coupled to said fourth node and a cathode coupled to said DC bias node.
18. An electronic device, comprising:
a main device system receiving a regulated source voltage; and
a power supply, comprising:
an AC line input and an AC neutral input;
a filter comprising at least one differential capacitor coupled between said AC line input and said AC neutral input;
a full wave rectifier coupled to said AC line input and said AC neutral input for developing a DC bus voltage on a DC bus node;
a converter which converts said DC bus voltage to a regulated output voltage, said converter including a controller;
a second rectifier coupled to said AC line input and said AC neutral input for developing a DC bias voltage on a DC bias node; and
a bias system coupled between said DC bias node and a reference node which provides at least one start-up voltage provided to said controller, wherein said bias circuit includes at least one current discharge path for discharging said at least one differential capacitor within a predetermined time period when AC line voltage is removed.
19. The electronic device of claim 18, wherein said predetermined time period is within one second.
20. The electronic device of claim 18, wherein said main device system is configured to operate any one of a consumer device, a commercial device, or an industrial device.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A bag clip for use with a pool cleaner having a suction mast for water flow therethrough to vacuum debris from submerged surfaces of a swimming pool, said bag clip comprising:
a base for mounting the bag clip onto an upper end of a pool cleaner suction mast;
an inner support collar on said base for slide-fit reception into an open mouth of a filter bag; and
an outer clamp ring for releasibly clamping the bag mouth onto said inner support collar, said outer clamp ring including first and second generally semi-circular clamp segments mounted for movement between a spaced-apart open position accommodating slide-fit mounting of the bag mouth onto said inner support collar and a closed position clamping the bag mouth securely onto said inner support collar.
2. The bag clip of claim 1 including alignment means for rotationally orienting said base relative to the pool cleaner suction mast.
3. The bag clip of claim 1 including alignment means for rotationally orienting the bag mouth relative to said inner support collar.
4. The bag clip of claim 1 including first alignment means for rotationally orienting said base relative to the pool cleaner suction mast, and second alignment means for rotationally orienting the bag mouth relative to said inner support collar.
5. The bag clip of claim 1 wherein said base includes mounting means comprising a pair of latch arms projecting downwardly from said base and having a pair of latch tabs respectively formed generally at lower ends of said latch arms for snap-fit reception into matingly shaped latch ports formed in the suction mast.
6. The bag clip of claim 1 wherein said base comprises a base ring.
7. The bag clip of claim 1 wherein said clamp segments are pivotally mounted on said base for movement between said open and closed positions.
8. The bag clip of claim 7 wherein said clamp segments include interengaging members for interlocking said clamp segments in said closed position.
9. The bag clip of claim 1 wherein said clamp segments include interengaging members for interlocking said clamp segments in said closed position.
10. The bag clip of claim 9 wherein said interengaging mmbers comprise interlocking snap-fit members.
11. The bag clip of claim 9 wherein said interengaging members comprise a latch port and a latch tab formed on each of said first and second clamp segments generally at opposite ends thereof, said latch tab on said first clamp segment being interlockingly engageable with said latch port on said second clamp segment, and said latch tab on said second clamp segment being interlockingly engageable with said latch port on said first clamp segment, when said clamp segments are in said closed position.
12. The bag clip of claim 1 wherein each of said clamp segments further includes at least one radially inwardly extending rib for gripping and retaining the bag mouth on said inner support collar, when said clamp segments are in said closed position.
13. A bag clip for use with a pool cleaner having a suction mast for water flow therethrough to vacuum debris from submerged surfaces of a swimming pool, said bag clip comprising:
a base for mounting the bag clip onto an upper end of a pool cleaner suction mast;
an inner support collar on said base for slide-fit reception into an open mouth of a filter bag; and
an outer clamp ring for releasibly clamping the bag mouth onto said inner support collar, said outer clamp ring including first and second generally semi-circular clamp segments mounted on said base for pivoting movement between a spaced-apart open position accommodating slide-fit mounting of the bag mouth onto said inner support collar and a closed position clamping the bag mouth securely onto said inner support collar, said clamp segments including interengaging members for interlocking said clamp segments in said closed position.
14. The bag clip of claim 13 further including first alignment means for rotationally orienting said base relative to the pool cleaner suction mast, and second alignment means for rotationally orienting the bag mouth relative to said inner support collar.
15. The bag clip of claim 13 wherein said base includes mounting means comprising a pair of latch arms projecting downwardly from said base and having a pair of latch tabs respectively formed generally at lower ends of said latch arms for snap-fit reception into matingly shaped latch ports formed in the suction mast.
16. The bag clip of claim 13 wherein said interengaging members comprise interlocking snap-fit members.
17. The bag clip of claim 13 wherein said interengaging members comprise a latch port and a latch tab formed on each of said first and second clamp segments generally at opposite ends thereof, said latch tab on said first clamp segment being interlockingly engageable with said latch port on said second clamp segment, and said latch tab on said second clamp segment being interlockingly engageable with said latch port on said first clamp segment, when said clamp segments are in said closed position.
18. The bag clip of claim 13 wherein each of said clamp segments further includes at least one radially inwardly extending rib for gripping and retaining the bag mouth on said inner support collar, when said clamp segments are in said closed position.
19. A bag clip for use with a pool cleaner having a suction mast for water flow therethrough to vacuum debris from submerged surfaces of a swimming pool, said bag clip comprising:
a base for mounting the bag clip onto an upper end of a pool cleaner suction mast;
an inner support collar on said base for slide-fit reception into an open mouth of a filter bag; and
an outer clamp carried by said base for releasibly clamping the bag mouth onto said inner support collar, said outer clamp being deployable between an open position accommodating slide-fit mounting of the bag mouth onto said inner support collar and a closed position clamping the bag mouth securely onto said inner support collar.
20. A bag clip for use in combination with a filter bag having an open mouth, and a pool cleaner having a suction mast for water flow therethrough to vacuum debris from submerged surfaces of a swimming pool and to collect the vacuumed debris within said filter bag, said bag clip comprising:
a base ring for mounting the bag clip onto an upper end of said pool cleaner suction mast;
an inner support collar on said base ring for slide-fit reception into said open mouth of said filter bag; and
an outer clamp ring for releasibly clamping the bag mouth onto said inner support collar, said outer clamp ring including first and second generally semi-circular clamp segments mounted on said base for pivoting movement between a spaced-apart open position accommodating slide-fit mounting of the bag mouth onto said inner support collar and a closed position clamping the bag mouth securely onto said inner support collar, said clamp segments including interengaging members for interlocking said clamp segments in said closed position.
21. The bag clip of claim 20 further including first alignment means for rotationally orienting said base relative to the pool cleaner suction mast, and second alignment means for rotationally orienting the bag mouth relative to said inner support collar.
22. The bag clip of claim 20 wherein said base ring includes mounting means comprising a pair of latch arms projecting downwardly from said base ring and having a pair of latch tabs respectively formed generally at lower ends of said latch arms for snap-fit reception into matingly shaped latch ports formed in the suction mast.
23. The bag clip of claim 20 wherein said interengaging members comprise interlocking snap-fit members.
24. The bag clip of claim 20 wherein said interengaging members comprise a latch port and a latch tab formed on each of said first and second clamp segments generally at opposite ends thereof, said latch tab on said first clamp segment being interlockingly engageable with said latch port on said second clamp segment, and said latch tab on said second clamp segment being interlockingly engageable with said latch port on said first clamp segment, when said clamp segments are in said closed position.
25. The bag clip of claim 20 wherein each of said clamp segments further includes at least one radially inwardly extending rib for gripping and retaining the bag mouth on said inner support collar, when said clamp segments are in said closed position.