摘要:
A compact multiple output switching power supply having a series connection of a D.C. input power supply, a switching device and a primary winding of a transformer which supplies currents to loads during an on period of the switching device, and supplies constant output voltages V.sub.i (i=1, 2, . . . , m) from m (m.gtoreq.2) secondary windings n.sub.i (i=1,2, . . . , m) of the transformer by turning on and off the switching device, includes means for storing a magnetic energy during the on period of the switching device and discharging the stored energy to the loads during on off period, connected in series with the primary winding of the transformer. The output voltage V.sub.j (j=2, 3, . . . , m) is represented byV.sub.j =(n.sub.j /n.sub.1).multidot.(V.sub.1 +k.sub.1)-k.sub.jwhere k.sub.j is a voltage drop in the circuit.
摘要:
In a self-oscillating type switching power supply in which an input source, a primary winding of a transformer, and a switching element are connected in series, and a constant output is supplied to a load from a secondary winding of the transformer by the operation of the switching element, in order to obtain a signal to turn off the switching element, a sense circuit for detecting the output of the switching power supply is provided, and the analog signal from the sense circuit is inputted to one winding of a saturable reactor, and at a time point when the switching element is to be turned off, the analog input signal is converted into a pulse signal insulated from the analog input signal, and the pulse signal is outputted from another winding of the saturable reactor. By such a system, a switching power supply having a very simple circuit arrangement and high output voltage precision can be achieved.
摘要:
In accordance with the present invention, there is provided a power supply apparatus comprising a primary winding of a main transformer and a semiconductor device with a control electrode connected in series between both electrodes of a DC power source, a drive current being fed to said control electrode of said semiconductor device via an auxiliary transformer, and output being obtained on a secondary winding of said main transformer by turning on and off of said semiconductor device, wherein a tertiary winding is provided on said main transformer and a negative polarity drive current is flowed into said semiconductor device via said tertiary winding when said semiconductor device is to turn off.
摘要:
An impedance for short-circuit prevention is connected with a secondary winding side of a transformer of a resonant converter comprising a resonant circuit, a D.C. input source, and a switching devices. The short-circuit prevention impedance is driven by the driving current generated in a driving winding in accordance with a resonance current at the primary winding side of the transformer, thereby obviating the stop of an oscillation. The oscillation can be stopped at a timing of not generating a surge voltage in the switching devices by detecting a current returning to the D.C. input power source.
摘要:
A cocrystal of (1S)-1,5-anhydro-1-[3-(1-benzothien-2-ylmethyl)-4-fluorophenyl]-D-glucitol and L-proline. It is a cocrystal of known compound A, which has a constant quality, is superior in storage stability, has no moisture absorptivity, and is suitable as a crystal of a drug substance used for preparing pharmaceuticals.
摘要:
A trailing arm type suspension improves the handling (driving stability) and the response (driving response) of an automobile by increasing the installation rigidity of a suspension member to a vehicle body frame. In the trailing arm type suspension including a pair of right and left trailing arms which extend in the vehicle longitudinal direction, a reinforcing bar for connecting a suspension member in the vehicle rear side of the trailing arm to a connecting part of a vehicle body frame in the vehicle front side of the suspension member, is disposed between a fuel tank and the trailing arm, and the reinforcing bar and the trailing arm overlap each other as viewed from the side of the vehicle.
摘要:
A power supply provided with: an AC/DC converter which receives AC power, converts the AC power into DC power, and outputs the DC power; a DC/DC converter which receives the DC power from the AC/DC converter, and controls a level of an output voltage of the DC/DC converter to be equal to a level of a voltage to be used by a load while the DC/DC converter supplies the output voltage to the load; a DC converter which is connected to an input of the DC/DC converter; and a DC power storage means which supplies electric power to the DC/DC converter through the DC converter.
摘要:
A power supply provided with: an AC/DC converter which receives AC power, converts the AC power into DC power, and outputs the DC power; a DC/DC converter which receives the DC power from the AC/DC converter, and controls a level of an output voltage of the DC/DC converter to be equal to a level of a voltage to be used by a load while the DC/DC converter supplies the output voltage to the load; a DC converter which is connected to an input of the DC/DC converter; and a DC power storage means which supplies electric power to the DC/DC converter through the DC converter.
摘要:
A nitrogen-containing six-membered heterocyclic compound having substituents —X—A—R3, —N(R1)-(Ph substituted by R2), and —CONH2, a salt thereof, a prodrug thereof, and a Syk inhibitor containing the same as an active ingredient. (In the formula, A: a (substituted) lower alkylene, a (substituted) arylene, or the like; X: NR4, CONR4, NR4CO, O, or S; R1, R4: H, a lower alkyl, —CO-lower alkyl, or —SO2-lower alkyl; R2: H, a (substituted) lower alkyl, —O-lower alkyl, —S-lower alkyl, —O-aryl, nitro, cyano, or the like; R3: —CO2H, —CO2-lower alkyl, -lower alkylene-CO2H, —NH2, -alkylene-NH2 or the like.
摘要翻译:具有取代基-XAR 3,-N(R 1) - (Ph被R 2取代的)的含氮六元杂环化合物和-CONH 2,其盐,其前药和 含有与活性成分相同的Syk抑制剂。 (式中,A:(取代的)低级亚烷基,(取代的)亚芳基等; X:NR 4,CONR 4,NR 4 CO,O或S; R 1 R 4:H,低级烷基,-CO-低级烷基或-SO 2 - 低级烷基; R 2:H,(取代的)低级烷基,-O-低级烷基,-S-低级 烷基,-O-芳基,硝基,氰基等; R 3:-CO 2 H,-CO 2 - 低级烷基, - 低级亚烷基-CO 2 H,-NH 2, - 亚烷基-NH 2等。
摘要:
A power supply apparatus includes a semiconductor switching device for outputting power and a control circuit for controlling the on/off operation of the semiconductor switching device. The control circuit includes a circuit for applying, when turning on the semiconductor switching device, a first control signal corresponding to the difference between the output voltage of the power supply apparatus and a first reference value to the semiconductor switching device in accordance with the increase in the output voltage from the power supply apparatus thereby to operate the semiconductor switching device in a non-saturated area, so that the semiconductor switching device is turned on gradually.