公开(公告)号：US08766613B2

公开(公告)日：2014-07-01

申请号：US13744037

申请日：2013-01-17

Applicant: Chan-Hong Chern ,  Tzu-Ching Chang ,  Min-Shueh Yuan ,  Yuwen Swei ,  Chih-Chang Lin ,  Chiang Pu ,  Ming-Chieh Huang ,  Kuoyuan Hsu

Inventor： Chan-Hong Chern ,  Tzu-Ching Chang ,  Min-Shueh Yuan ,  Yuwen Swei ,  Chih-Chang Lin ,  Chiang Pu ,  Ming-Chieh Huang ,  Kuoyuan Hsu

IPC: G05F1/44

CPC classification number: H02M3/158 ,  G05F1/44 ,  G05F1/56

Abstract: A method of operating a voltage regulator circuit includes generating a control signal by an amplifier of the voltage regulator circuit. The control signal is generated based on a reference signal at an inverting input of the amplifier and a feedback signal at a non-inverting input of the amplifier. A driving current flowing toward an output node of the voltage regulator circuit is generated by a driver responsive to the control signal, and the driver is coupled between a first power node and the output node. The feedback signal is generated responsive to a voltage level at the output node. A transistor, coupled between the output node and a second power node, is caused to operate in saturation mode during a period while the voltage regulator circuit is operating.

Abstract translation: 一种操作电压调节器电路的方法包括由稳压器电路的放大器产生控制信号。 控制信号基于放大器的反相输入处的参考信号和放大器的非反相输入端的反馈信号而产生。 通过响应于控制信号的驱动器产生朝向电压调节器电路的输出节点流动的驱动电流，并且驱动器耦合在第一功率节点和输出节点之间。 响应于输出节点处的电压电平产生反馈信号。 耦合在输出节点和第二功率节点之间的晶体管在电压调节器电路工作期间的一段时间内使其工作在饱和模式。

公开(公告)号：US5310924A

公开(公告)日：1994-05-10

申请号：US55438

申请日：1993-04-30

Applicant: Patti A. Parziale ,  Tzu-Ching Chang ,  Lynn E. Applegate

Inventor： Patti A. Parziale ,  Tzu-Ching Chang ,  Lynn E. Applegate

IPC: C07D417/04

CPC classification number: C07D417/04

Abstract: Process for preparing 2-(4-thiazolyl)-1H-benzimidazole (generic name: thiabendazole) by the acid-catalyzed condensation of o-phenyldiamine and 4-cyanothiazole in solution in water or mixtures of water with miscible co-solvents (solvents which upon mixing with water in all proportions form a homogeneous mixture, as well as, other partially miscible solvents which upon mixing with water in some proportions form a homogeneous mixture under the reaction conditions of the process of this invention).

Abstract translation: 通过邻 - 苯基二胺和4-氰基噻唑在水溶液中或水与混溶性共溶剂的酸催化缩合制备2-（4-噻唑基）-1H-苯并咪唑（通用名：噻苯达唑）的方法 在与本发明方法的反应条件下形成均匀的混合物时，与水以一定比例混合形成均匀的混合物，以及其它部分混溶的溶剂。

公开(公告)号：US4489209A

公开(公告)日：1984-12-18

申请号：US331894

申请日：1981-12-17

Applicant: Tzu-Ching Chang

Inventor： Tzu-Ching Chang

IPC: C07C85/26

CPC classification number: C07C209/86

Abstract: A process of separating amines having different basicity constants is disclosed. The more reactive amine is converted to a salt which is extracted with water in a multiple stage countercurrent extractor. The salt form of the amine is converted to the free amine. In a preferred aspect of the invention the amine salt is an amine sulfite which can be converted to free amine and sulfur dioxide. The sulfur dioxide can be reused to generate more amine sulfite. The more reactive amine is then separated from the water and part of it recovered. The remainder of the more reactive amine is recycled to the countercurrent extractor. The less reactive amine is removed from the countercurrent extractor in the free amine state as an organic phase along with any organic solvent that is used. Part of the less reactive amine is recovered from the system while the remainder is converted to a salt and an aqueous solution thereof recycled to the countercurrent extractor.

Abstract translation: 公开了分离具有不同碱度常数的胺的方法。 将更多的反应性胺转化成盐，其在多级逆流萃取器中用水萃取。 将胺的盐形式转化为游离胺。 在本发明的优选方面，胺盐是可以转化为游离胺和二氧化硫的亚硫酸胺。 二氧化硫可以重复使用以产生更多的亚硫酸胺。 然后将更多的反应性胺从水中分离出来，其一部分回收。 剩余的更多的反应性胺被再循环到逆流萃取器中。 作为有机相的游离胺状态的逆流提取器中除去反应活性较少的胺以及使用的任何有机溶剂。 从系统中回收部分较少活性的胺，而其余部分转化为盐并将其水溶液再循环至逆流萃取器。

公开(公告)号：US4409386A

公开(公告)日：1983-10-11

申请号：US405757

申请日：1982-08-06

Applicant: Tzu-Ching Chang

Inventor： Tzu-Ching Chang

IPC: C07C85/26

CPC classification number: C07C209/84

Abstract: An acid extraction process for separating 3,4-dichloroaniline from 2,3-dichloroaniline and 2,5-dichloroaniline is disclosed. The process involves selectively forming 3,4-dichloroaniline hydrochloride, since it has a higher basicity than the other dichloroaniline isomers, in a multiple stage extraction unit. An aqueous solution of 3,4-dichloroaniline hydrochloride is removed from the multiple stage extraction unit and neutralized with a base to form an immiscible mixture of an aqueous salt solution and 3,4-dichloroaniline which are separated by decantation.

Abstract translation: 公开了一种从2,3-二氯苯胺和2,5-二氯苯胺中分离3,4-二氯苯胺的酸提取方法。 该方法包括选择性地形成3,4-二氯苯胺盐酸盐，因为它在多级萃取装置中具有比其它二氯苯胺异构体更高的碱度。 从多级萃取单元中除去3,4-二氯苯胺盐酸盐的水溶液，并用碱中和以形成通过倾析分离的盐水溶液和3,4-二氯苯胺的不混溶混合物。