1. An electrolytic capacitor formed by winding band-shaped anode foil and cathode foil, comprising:
an anode foil and a cathode foil wound up in a prescribed orientation from one-end side in a longitudinal direction, in a manner opposed to each other;
a first anode lead tab terminal connected to a portion of said anode foil at a first distance from said one-end side of said anode foil and arranged at a prescribed first position in a circumferential direction in a wound-up state;
a second anode lead tab terminal connected to a portion of said anode foil at a second distance greater than said first distance from said one-end side of said anode foil and arranged at a prescribed second position in a circumferential direction with respect to said first position in the circumferential direction in the wound-up state;
a first cathode lead tab terminal connected to a portion of said cathode foil at a third distance from said one-end side of said cathode foil and arranged at a prescribed third position in a circumferential direction with respect to said first position in the circumferential direction and said second position in the circumferential direction in the wound-up state; and
a second cathode lead tab terminal connected to a portion of said cathode foil at a fourth distance greater than said third distance from said one-end side of said cathode foil and arranged at a prescribed fourth position in a circumferential direction with respect to said third position in the circumferential direction in the wound-up state, wherein
each of said first anode lead tab terminal and said second anode lead tab terminal includes
an anode connection portion connected in contact with said anode foil and
an anode lead electrically connected to said anode connection portion and serving as an anode terminal,
each of said first cathode lead tab terminal and said second cathode lead tab terminal includes
a cathode connection portion connected in contact with said cathode foil and
a cathode lead electrically connected to said cathode connection portion and serving as a cathode terminal,
said second anode lead tab terminal is connected to a portion of said anode foil corresponding to said second position in the circumferential direction after winding up said anode foil by a prescribed length from the portion of said anode foil corresponding to said first position in the circumferential direction,
one anode lead tab terminal of said first anode lead tab terminal and said second anode lead tab terminal is provided as a first type formed such that a position in a radial direction of said anode lead is different from a position in a radial direction of said anode connection portion in a state that said anode foil is wound up,
the other anode lead tab terminal of said first anode lead tab terminal and said second anode lead tab terminal is provided as a second type formed such that a position in a radial direction of said anode lead is identical to a position in a radial direction of said anode connection portion in a state that said anode foil is wound up,
said second cathode lead tab terminal is connected to a portion of said cathode foil corresponding to said fourth position in the circumferential direction after winding up said cathode foil by a prescribed length from the portion of said cathode foil corresponding to said third position in the circumferential direction,
one cathode lead tab terminal of said first cathode lead tab terminal and said second cathode lead tab terminal is provided as a third type formed such that a position in a radial direction of said cathode lead is different from a position in a radial direction of said cathode connection portion in a state that said cathode foil is wound up, and
the other cathode lead tab terminal of said first cathode lead tab terminal and said second cathode lead tab terminal is provided as a fourth type formed such that a position in a radial direction of said cathode lead is identical to a position in a radial direction of said cathode connection portion in a state that said cathode foil is wound up.
2. The electrolytic capacitor according to claim 1, wherein
said first anode lead tab terminal is provided as said second type,
said second anode lead tab terminal is provided as said first type,
said second anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said second anode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said anode lead of said first anode lead tab terminal,
said first cathode lead tab terminal is provided as said fourth type,
said second cathode lead tab terminal is provided as said third type, and
said second cathode lead tab terminal is connected to said cathode foil such that the position in the radial direction of said cathode lead of said second cathode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said cathode lead of said first cathode lead tab terminal.
3. The electrolytic capacitor according to claim 1, wherein
said first anode lead tab terminal is provided as said first type,
said second anode lead tab terminal is provided as said second type,
said first anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said first anode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said anode lead of said second anode lead tab terminal,
said first cathode lead tab terminal is provided as said third type,
said second cathode lead tab terminal is provided as said fourth type, and
said first cathode lead tab terminal is connected to said cathode foil such that the position in the radial direction of said cathode lead of said first cathode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said cathode lead of said second cathode lead tab terminal.
4. The electrolytic capacitor according to claim 1, wherein
a two-dimensional arrangement pattern of said anode lead of said first anode lead tab terminal, said anode lead of said second anode lead tab terminal, said cathode lead of said first cathode lead tab terminal, and said cathode lead of said second cathode lead tab terminal in a state that said anode foil and said cathode foil are wound up is a pattern in which the leads are arranged at positions corresponding to vertices of a quadrangle respectively.
5. The electrolytic capacitor according to claim 4, wherein
in said two-dimensional arrangement pattern, an angle of one vertex of said quadrangle is in a range from 70 to 110\xb0.
6. An electrolytic capacitor, comprising:
band-shaped anode foil and cathode foil to be wound; and
four lead tab terminals each of which includes a connection portion connected in contact with any of said anode foil and said cathode foil and a lead electrically connected to said connection portion and serving as a terminal, wherein
four said lead tab terminals include such a lead tab terminal that said lead is arranged at a position in a radial direction identical to that of said connection portion and such a lead tab terminal that said lead is arranged at a position shifted in the radial direction with respect to said connection portion, in a state that said anode foil and said cathode foil are wound.
7. An electrolytic capacitor formed by winding band-shaped anode foil and cathode foil, comprising:
an anode foil and a cathode foil wound up in a prescribed orientation from one-end side in a longitudinal direction, in a manner opposed to each other;
a first anode lead tab terminal connected to a portion of said anode foil at a first distance from said one-end side of said anode foil and arranged at a prescribed first position in a circumferential direction in a wound-up state;
a second anode lead tab terminal connected to a portion of said anode foil at a second distance greater than said first distance from said one-end side of said anode foil and arranged at a prescribed second position in a circumferential direction with respect to said first position in the circumferential direction in the wound-up state;
a first cathode lead tab terminal connected to a portion of said cathode foil at a third distance from said one-end side of said cathode foil and arranged at a prescribed third position in a circumferential direction with respect to said first position in the circumferential direction and said second position in the circumferential direction in the wound-up state; and
a second cathode lead tab terminal connected to a portion of said cathode foil at a fourth distance greater than said third distance from said one-end side of said cathode foil and arranged at a prescribed fourth position in a circumferential direction with respect to said third position in the circumferential direction in the wound-up state, wherein
each of said first anode lead tab terminal and said second anode lead tab terminal includes
an anode connection portion connected in contact with said anode foil and
an anode lead electrically connected to said anode connection portion and serving as an anode terminal,
each of said first cathode lead tab terminal and said second cathode lead tab terminal includes
a cathode connection portion connected in contact with said cathode foil and
a cathode lead electrically connected to said cathode connection portion and serving as a cathode terminal,
said second anode lead tab terminal is connected to a portion of said anode foil corresponding to said second position in the circumferential direction after winding up said anode foil by a prescribed length from the portion of said anode foil corresponding to said first position in the circumferential direction,
said first anode lead tab terminal and said second anode lead tab terminal are formed such that a position in a radial direction of said anode lead is different from a position in a radial direction of said anode connection portion in a state that said anode foil is wound up,
said second cathode lead tab terminal is connected to a portion of said cathode foil corresponding to said fourth position in the circumferential direction after winding up said cathode foil by a prescribed length from a portion of said cathode foil corresponding to said third position in the circumferential direction, and
said first cathode lead tab terminal and said second cathode lead tab terminal are formed such that a position in a radial direction of said cathode lead is different from a position in a radial direction of said cathode connection portion in a state that said cathode foil is wound up.
8. The electrolytic capacitor according to claim 7, wherein
said first anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said first anode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said anode lead of said second anode lead tab terminal,
said second anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said second anode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said anode lead of said first anode lead tab terminal,
said first cathode lead tab terminal is connected to said cathode foil such that the position in the radial direction of said cathode lead of said first cathode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said cathode lead of said second cathode lead tab terminal, and
said second cathode lead tab terminal is connected to said cathode foil such that the position in the radial direction of said cathode lead of said second cathode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said cathode lead of said first cathode lead tab terminal.
9. The electrolytic capacitor according to claim 7, wherein
a two-dimensional arrangement pattern of said anode lead of said first anode lead tab terminal, said anode lead of said second anode lead tab terminal, said cathode lead of said first cathode lead tab terminal, and said cathode lead of said second cathode lead tab terminal in a state that said anode foil and said cathode foil are wound up is a pattern in which the leads are arranged at vertices of a quadrangle respectively.
10. The electrolytic capacitor according to claim 9, wherein
in said two-dimensional arrangement pattern, an angle of one vertex of said quadrangle is in a range from 70 to 110\xb0.
11. An electrolytic capacitor, comprising:
band-shaped anode foil and cathode foil to be wound; and
four lead tab terminals each of which includes a connection portion connected in contact with any of said anode foil and said cathode foil and a lead electrically connected to said connection portion and serving as a terminal, wherein
four said lead tab terminals include such a lead tab terminal that said lead is arranged at a position shifted radially outward with respect to said connection portion and such a lead tab terminal that said lead is arranged at a position shifted radially inward with respect to said connection portion, in a state that said anode foil and said cathode foil are wound.
12. An electrolytic capacitor formed by winding band-shaped anode foil and cathode foil, comprising:
an anode foil and a cathode foil wound up in a prescribed orientation from one-end side in a longitudinal direction, in a manner opposed to each other;
a first anode lead tab terminal connected to a portion of said anode foil at a first distance from said one-end side of said anode foil and arranged at a prescribed first position in a circumferential direction in a wound-up state;
a second anode lead tab terminal connected to a portion of said anode foil at a second distance greater than said first distance from said one-end side of said anode foil and arranged at a prescribed second position in a circumferential direction with respect to said first position in the circumferential direction in the wound-up state; and
one cathode lead tab terminal connected to a portion of said cathode foil at a third distance from said one-end side of said cathode foil and arranged at a prescribed third position in a circumferential direction with respect to said first position in the circumferential direction and said second position in the circumferential direction in the wound-up state, wherein
each of said first anode lead tab terminal and said second anode lead tab terminal includes
an anode connection portion connected in contact with said anode foil and
an anode lead electrically connected to said anode connection portion and serving as an anode terminal,
said cathode lead tab terminal includes
a cathode connection portion connected in contact with said cathode foil and
a cathode lead electrically connected to said cathode connection portion and serving as a cathode terminal,
said second anode lead tab terminal is connected to a portion of said anode foil corresponding to said second position in the circumferential direction after winding up said anode foil by a prescribed length from the portion of said anode foil corresponding to said first position in the circumferential direction, and
at least one anode lead tab terminal of said first anode lead tab terminal and said second anode lead tab terminal is provided as a first type formed such that a position in a radial direction of said anode lead is different from a position in a radial direction of said anode connection portion in a state that said anode foil is wound up.
13. The electrolytic capacitor according to claim 12, wherein
an anode lead tab terminal of said first anode lead tab terminal is provided as the second type formed such that the position in the radial direction of said anode lead is identical to the position in the radial direction of said anode connection portion in the state that said anode foil is wound up,
said second anode lead tab terminal is provided as said first type, and
said second anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said second anode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said anode lead of said first anode lead tab terminal.
14. The electrolytic capacitor according to claim 12, wherein
said first anode lead tab terminal is provided as said first type,
an anode lead tab terminal of said second anode lead tab terminal is provided as the second type formed such that the position in the radial direction of said anode lead is identical to the position in the radial direction of said anode connection portion in the state that said anode foil is wound up, and
said first anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said first anode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said anode lead of said second anode lead tab terminal.
15. The electrolytic capacitor according to claim 12, wherein
said first and second anode lead tab terminals are provided as said first type,
said first anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said first anode lead tab terminal is shifted outward to be in registration with the position in the radial direction of said anode lead of said second anode lead tab terminal, and
said second anode lead tab terminal is connected to said anode foil such that the position in the radial direction of said anode lead of said second anode lead tab terminal is shifted inward to be in registration with the position in the radial direction of said anode lead of said first anode lead tab terminal.
16. The electrolytic capacitor according to claim 12, wherein
a two-dimensional arrangement pattern of said anode lead of said first anode lead tab terminal, said anode lead of said second anode lead tab terminal, and said cathode lead of said cathode lead tab terminal in a state that said anode foil and said cathode foil are wound up is a pattern in which the leads are arranged at vertices of a triangle respectively.
17. The electrolytic capacitor according to claim 16, wherein
in said two-dimensional arrangement pattern, an angle of one vertex of said triangle is in a range from 20 to 140\xb0.
18. An electrolytic capacitor, comprising:
band-shaped anode foil and cathode foil to be wound; and
three lead tab terminals each of which includes a connection portion connected in contact with any of said anode foil and said cathode foil and a lead electrically connected to said connection portion and serving as a terminal, wherein
three said lead tab terminals include such a lead tab terminal that said lead is arranged at a position in a radial direction identical to that of said connection portion and such a lead tab terminal that said lead is arranged at a position shifted in the radial direction with respect to said connection portion, in a state that said anode foil and said cathode foil are wound.
19. An electrolytic capacitor, comprising:
band-shaped anode foil and cathode foil to be wound; and
three lead tab terminals each of which includes a connection portion connected in contact with any of said anode foil and said cathode foil and a lead electrically connected to said connection portion and serving as a terminal, wherein
three said lead tab terminals include such a lead tab terminal that said lead is arranged at a position shifted radially outward with respect to said connection portion and such a lead tab terminal that said lead is arranged at a position shifted radially inward with respect to said connection portion, in a state that said anode foil and said cathode foil are wound.
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 method of supplying a pulsed current to one or more than one light-emitting diodes comprising:
switching a first current from a direct current (DC) voltage to an inductance means for charging the inductance means;
switching the pulsed current from the inductance means to said light-emitting diodes for discharging the inductance means to said light-emitting diodes;
switching a second current from the inductance means to the direct current (DC) voltage for discharging the inductance means to the direct current (DC) voltage;
wherein switching the first current from the direct current (DC) voltage to the inductance means, switching the pulsed current from the inductance means to said light-emitting diodes, and switching the second current from the inductance means to the direct current (DC) voltage are controlled to regulate the pulsed current.
2. The method of claim 1 further comprising:
getting a feedback current signal by detecting the current of the inductance means and integrating the feedback current signal to process a negative feedback control.
3. The method of claim 1 further comprising:
getting a feedback signal by detecting the current of said light-emitting diodes and integrating the feedback signal to process a negative feedback control.
4. The method of claim 2 further comprising:
getting a feedback signal by detecting the current of said light-emitting diodes and integrating the feedback signal to process a negative feedback control.
5. The method according to claim 1, wherein the inductance means comprises an inductor or a flyback transformer.
6. The method according to claim 5, wherein the flyback transformer comprises:
a primary winding for charging the flyback transformer;
a first secondary winding for discharging the flyback transformer to said light-emitting diodes;
a second secondary winding for discharging the flyback transformer to the direct current (DC) voltage.
7. A circuit for supplying a pulsed current to one or more than one light-emitting diodes, said circuit comprising:
an inductance means;
a first switching unit comprising at least one switch and coupled to the inductance means for switching a first current from a direct current (DC) voltage to the inductance means for charging the inductance means;
a second switching unit comprising at least one switch and coupled to said light-emitting diodes for switching the pulsed current from the inductance means to said light-emitting diodes;
a third switching unit comprising at least one switch and coupled between the inductance means and the direct current (DC) voltage for switching a second current from the inductance means to the direct current (DC) voltage for discharging the inductance means to the direct current (DC) voltage;
a switching control unit coupled to the first switching unit, the second switching unit and the third switching unit to control their switching for regulating the pulsed current supplied to said light-emitting diodes.
8. The circuit according to claim 7, further comprising:
a negative feedback current signal generator to generate a negative feedback current signal corresponding to the current in the inductance means,
wherein the switching control unit integrates the negative feedback current signal to process a negative feedback control.
9. The circuit according to claim 7, further comprising:
a negative feedback signal generator to generate a negative feedback signal corresponding to the current of said light-emitting diodes,
wherein the switching control unit integrates the negative feedback signal to process a negative feedback control.
10. The circuit according to claim 8, further comprising:
a negative feedback signal generator to generate a negative feedback signal corresponding to the current of said light-emitting diodes,
wherein the switching control unit integrates the negative feedback current signal and the negative feedback signal to process a negative feedback control.
11. The circuit according to claim 8, further comprising:
an isolator circuit coupled between the negative feedback current signal generator and the switching control unit to provide electric isolation between the negative feedback current signal generator and the switching control unit.
12. The circuit according to claim 9, further comprising:
an isolator circuit coupled between the negative feedback signal generator and the switching control unit to provide electric isolation between the negative feedback signal generator and the switching control unit.
13. The circuit according to claim 10, further comprising:
an isolator circuit coupled between the negative feedback signal generator and the switching control unit to provide electric isolation between the negative feedback signal generator and the switching control unit.
14. The circuit according to claim 7, further comprising:
a rectifying and smoothing unit to rectify and smooth an alternating current (AC) voltage for providing the direct current (DC) voltage.
15. The circuit according to claim 7, wherein the inductance means comprises an inductor or a flyback transformer.
16. The circuit according to claim 15, wherein the flyback transformer comprises:
a primary winding for charging the flyback transformer;
a first secondary winding for discharging the flyback transformer to said light-emitting diodes;
a second secondary winding for discharging the flyback transformer to the direct current (DC) voltage.