1. An ACDC power converter having functions of a forward conversion from AC to DC and an inverse conversion from DC to AC, comprising:
a magnetic-energy-recovery two-way switch including a bridge circuit being comprised of four reverse-conductive type semiconductor switches, a capacitor connected between DC terminals of the bridge circuit for storing magnetic energy existing when a current is cut off, a control unit for controlling ONOFF of each of the reverse-conductive type semiconductor switches by sending control signal to a gate of each of the reverse-conductive type semiconductor switches;
an AC inductance having one end connected to an AC power supply and an other end connected to an AC terminal of the bridge circuit; and
a DC inductance having one end connected to a secondary battery serving as a DC power supply and an other end connected to a DC terminal of the bridge circuit;
wherein a capacitance C of the capacitor and an inductance L of the AC inductance are set to such values as to make the resonance frequency determined by the C and L higher than the frequency of the AC power supply; and
wherein the control unit controls the control signals so as to turn simultaneously ONOFF the pairs of the reverse-conductive type semiconductor switches diagonally located in synchronization with the voltage of the AC power supply, and to prevent the two pairs of the reverse-conductive type semiconductor switches from being turned ON simultaneously; and the control unit further controls the control signals in such a manner that the phase of the control signals delays as compared to the phase of the AC power supply when a forward conversion is carried out, and the phase of the control signals advances as compared to the phase of the AC power supply when an inverse conversion is carried out.
2. The ACDC power converter according to claim 1, wherein an AC switch whose ONOFF is controlled by the control unit is inserted between the AC inductance and the AC power supply;
wherein when the control unit detects a power failure or an instantaneous voltage down of the AC power supply, the control unit opens the AC switch to break the AC power supply and generates a pseudo synchronizing signal in place of the AC power supply and changes over to an inverse power conversion by making the phase of the control signals advance to carry out an inverse power conversion of the electric power of the secondary battery or other DC power supply, thereby continuing the supply of AC power to the AC load.
3. The ACDC power converter according to claim 2, wherein a DC switch is inserted between the DC inductance and the secondary battery or between the DC inductance and a DC terminal of the bridge circuit.
4. The ACDC power converter according to claim 2, wherein the control unit is provided with communication unit for communicating with outside.
5. The ACDC power converter according to claim 1, wherein a DC switch is inserted between the DC inductance and the secondary battery or between the DC inductance and a DC terminal of the bridge circuit.
6. The ACDC power converter according to claim 1, wherein the control unit is provided with communication unit for communicating with outside.
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. Liquid injectable composition comprising
a) acetaminophen,
b) hydroxyethyl starch and
c) at least one osmolality agent.
2. The composition according to claim 1 further comprising a buffering agent.
3. The composition according to claim 1 wherein the composition has a pH value ranging from 4 to 8.
4. The composition according to claim 1 wherein the composition is aqueous.
5. The composition according to claim 1 wherein the osmolality agent is an aliphatic polyhydroxy alkanol having 2 to 10 carbon atoms.
6. The composition according claim 1 wherein the osmolality agent is mannitol.
7. A pharmaceutical composition comprising at least a liquid injectable composition as defined in claim 1.
8. The pharmaceutical composition according to claim 7 for use in the prophylaxis and treatment of pain andor fever.
9. A method for the manufacturing of a composition as defined in claim 1 comprising the step:
dissolving acetaminophen in a solvent in the presence of hydroxyethyl starch
10. The method according to claim 9 wherein the solvent is an aqueous solvent.
11. The method according to claim 9 wherein the acetaminophen is dissolved in the presence of hydroxyethyl starch at a temperature ranging from 5 to 50\xb0 C.
12. The method according to claim 9 at least one of claims 9 to 11, wherein the method is free of a deoxygenation step.
13. A container containing a composition according to claim 1.
14. The container according to claim 13 made of an organic polymer or glass.
15. Use of hydroxyethyl starch for the increase of the rate of dissolution of acetam.
16. The composition according to claim 1 wherein the composition has a pH value ranging from 4.5 to 6.5.
17. The composition according to claim 1 wherein the osmolality agent is mannitol, fructose, glucose, gluconolactone, gluconate, or a mixture thereof.
18. The composition according to claim 2 wherein the buffering agent is a buffer based on acetate, citrate, phosphate, or a mixture thereof.
19. The method according to claim 9 wherein the solvent is water.
20. The method according to claim 9 wherein the acetaminophen is dissolved in the presence of hydroxyethyl starch at a temperature ranging from 15 to 40\xb0 C.