1. A pressure relief check valve system, comprising:
a valve body having an upstream side, a downstream side, and a flow channel that extends between the upstream and downstream sides;
a flapper rotationally mounted on the valve body and movable between a closed position, in which the flapper at least substantially seals the flow channel, and an open position, in which the flapper unseals the flow channel;
a magnet coupled to the flapper;
an electromagnet coupled to the valve body and configured to selectively receive electrical current, the electromagnet operable, upon receipt of the electrical current, to either magnetically attract or not magnetically attract the magnet, to thereby at least substantially inhibit flapper rotation from the closed position or allow flapper rotation to the open position, respectively; and
a pressure sensor circuit adapted to sense one or more fluid pressures and operable, based on the one or more sensed fluid pressures, to selectively supply or interrupt the electrical current to the electromagnet.
2. The system of claim 1, wherein the pressure sensor circuit is configured to supply the electrical current to the electromagnet and, if the one or more sensed fluid pressures are equal to or greater than a predetermined value, to interrupt the electrical current to the electromagnet.
3. The system of claim 2, wherein the electromagnet is configured, upon receipt of the electrical current, to generate a magnetic field that attracts the magnet, and thereby generates a magnetic force that at least urges the flapper toward the closed position.
4. The system of claim 1, wherein the pressure sensor circuit is configured to interrupt the electrical current to the electromagnet and, if the one or more sensed fluid pressures are equal to or greater than a predetermined value, to supply the electrical current to the electromagnet.
5. The system of claim 4, wherein the electromagnet is configured to generate a magnetic field that attracts the magnet when the electrical current is interrupted, to thereby urge the flapper toward the closed position, and to generate a magnetic field that does not attract the magnet when the electrical current is supplied thereto, to thereby allow upstream fluid pressure to at least urge the flapper toward the open position.
6. The system of claim 1, wherein the pressure sensor circuit comprises a pressure switch configured to sense a fluid pressure and, based on the sensed fluid pressure, to selectively move a switch between an open and a closed position.
7. The system of claim 6, wherein the pressure switch is configured to move the switch to (i) the open position when the sensed fluid pressure is greater than or equal to a predetermined pressure value and (ii) the closed position when the sensed fluid pressure is less than the predetermined pressure value.
8. The system of claim 6, wherein the pressure switch is configured to move the switch to (i) the closed position when the sensed fluid pressure is greater than or equal to a predetermined pressure value and (ii) the open position when the sensed fluid pressure is less than the predetermined pressure value.
9. The system of claim 1, wherein the pressure sensor circuit comprises:
a sensor configured to sense the one or more fluid pressures and supply a signal representative thereof; and
a control unit coupled to receive the signal from the sensor and operable, in response thereto, to selectively supply or interrupt the electrical current to the electromagnet.
10. The system of claim 9, wherein the control unit is configured to (i) interrupt the electrical current to the electromagnet when the one or more sensed fluid pressures are greater than or equal to a predetermined pressure and (ii) supply the electrical current to the electromagnet when the one or more sensed fluid pressures are less than the predetermined pressure.
11. The system of claim 9, wherein the control unit is configured to (i) supply the electrical current to the electromagnet when the one or more sensed fluid pressures are greater than or equal to a predetermined pressure and (ii) interrupt the electrical current to the electromagnet when the one or more sensed fluid pressures are less than the predetermined pressure.
12. The system of claim 1, further comprising:
a power source configured to supply the electrical current.
13. The system of claim 1, wherein the valve body further comprises:
a second flow channel that extends between the upstream and downstream sides;
a second flapper rotationally mounted on the valve body and movable between a closed position, in which the second flapper at least substantially seals the second flow channel, and an open position, in which the second flapper unseals the flow channel;
a second magnet coupled to the second flapper;
a second electromagnet coupled to the valve body and configured to selectively receive electrical current, the second electromagnet operable, upon receipt of the electrical current, to either magnetically attract or not magnetically attract the second magnet, to thereby at least substantially inhibit second flapper rotation from the closed position or allow second flapper rotation to the open position, respectively.
14. The system of claim 13, wherein electrical current is simultaneously supplied or interrupted to the first and second electromagnets.
15. The system of claim 14, wherein the pressure sensor circuit is operable to selectively supply or interrupt electrical current to the first electromagnet, if the one or more sensed fluid pressures are at or above a first value, and to selectively supply or interrupt electrical current to the second electromagnet, if the one or more sensed fluid pressures are at or above a second value that differs from the first value.
16. A pressure relief check valve system, comprising:
a valve body having an upstream side, a downstream side, and a plurality of flow channels that extend between the upstream and downstream sides;
a plurality of flappers rotationally mounted on the valve body, each flapper movable between a closed position, in which the flapper at least substantially seals one of the flow channels, and an open position, in the flapper unseals one of the flow channels;
a plurality of magnets, each magnet coupled to one of the flappers;
a plurality of electromagnets, each electromagnet coupled to the valve body and configured to selectively receive electrical current and operable, upon receipt of the electrical current, to either magnetically attract or not magnetically attract one of the magnets, to thereby at least substantially inhibit rotation of one of the flappers from the closed position or allow rotation of one of the flappers to the open position, respectively; and
a pressure sensor circuit adapted to sense one or more fluid pressures and operable, based on the sensed fluid pressure, to selectively supply or interrupt the electrical current to the electromagnets.
17. The system of claim 16, wherein the pressure sensor circuit is configured to supply the electrical current to the electromagnets and, if the one or more sensed fluid pressures are equal to or greater than a predetermined pressure, to interrupt the electrical current to the electromagnets.
18. The system of claim 17, wherein the electromagnets are each configured, upon receipt of the electrical current, to generate a magnetic field that attracts one of the magnets, and thereby generates a magnetic force that at least urges one of the flappers toward the closed position.
19. The system of claim 16, wherein the pressure sensor circuit is configured to interrupt electrical current to the electromagnets and, if the one or more sensed fluid pressures are equal to or greater than a predetermined pressure, to supply the electrical current to the electromagnets.
20. The system of claim 19, wherein the electromagnets are each configured to generate a magnetic field that attracts one of the magnets when the electrical current is interrupted, to thereby at least urge one of the flappers toward the closed position, and to generate a magnetic field that does not attract one of the magnets when the electrical current is supplied thereto, to thereby allow upstream fluid pressure to at least urge one of the flappers toward the open position.
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. Operating device for a lighting device, said operating device comprising:
an interface via which external dimming values can be supplied to the operating device,
wherein the operating device converts these supplied external dimming values to quantized internal dimming values, on the basis of which controlling of a connected lighting means device is effected,
the internal dimming values being of a higher quantized resolution than the external dimming values, and
wherein the conversion of the external dimming values into the internal dimming values is programmable.
2. Operating device according to claim 1,
wherein the conversion is programmable in respect of its dynamics so that it is possible to program by which time characteristic response an internal dimming value, assigned to an external dimming value, is achieved.
3. Operating device according to claim 1, wherein
the assignment of an internal dimming value, to be controlled in the stationary state, to an external dimming value is programmable.
4. Operating device according to claim 3, wherein
the lighting device comprises at least one light-emitting diode.
5. Operating device according to claim 1,
comprising a flash memory for storing the programmable conversion of the external dimming values into internal dimming values.
6. Operating device according to claim 1,
wherein a power parameter or a combination of power parameters can be set to an artificially limited maximum value below 100%, this artificially limited maximum value being selectively switchable andor cancellable.
7. Operating device according to claim 6,
wherein all internally available dimming values are apportioned to a range between 0% and the maximum value limitation.
8. Operating device according to claim 1,
comprising a plurality of outputs for controlling lighting devices, the internal dimming characteristics being individually programmable for each of said outputs.
9. Operating device according to claim 8, wherein the outputs control lighting devices of different colors.
10. Method for compensating tolerances of light-emitting diodes controlled by an operating device,
the operating device being supplied with external dimming values,
the method comprising programming conversion of the external dimming values into quantized internal dimming values.
11. Method for configuring an operating device for lighting devices that is supplied with external dimming values,
wherein the supplied external dimming values are converted into quantized internal dimming values, on the basis of which the connected lighting devices are controlled,
the internal dimming values being of a higher quantized resolution than the external dimming values,
the method further comprising programming conversion of the external dimming values into the internal dimming values.
12. Method according to claim 11, comprising programming
the conversion by which time characteristic response an internal dimming value, assigned to an external dimming value, is achieved.
13. Method according to claim 11, wherein
the assignment of an internal dimming value, to be controlled in the stationary state, to an external dimming value is programmable.
14. Method according to claim 11,
wherein a maximum value limitation of one or more power parameters can be set below 100%, which can be selectively switched on andor cancelled.
15. Method according to claim 14,
wherein the internal dimming values are apportioned to the range between 0% and the maximum value limitation.
16. Method according to claim 11, wherein
the operating device comprises a plurality of outputs that are each programmed individually.
17. Method according to claim 16, wherein
internal dimming characteristics of lighting devices of different colors are programmed individually.
18. Method according to claim 17, wherein
internal dimming characteristics of lighting devices of different colors are programmed individually for the purpose of adaptation to the perception of the human eye.
19. Operating device for lighting means comprising:
an interface via which external dimming values can be supplied to an operating device, wherein the operating device converts these externally supplied dimming values into internal dimming values using a dimming characteristic, on basis of which connected lighting means are controlled, and individual internal dimming characteristics for controlling LEDs of different colors are provided.