| 详细介绍：
2364-SPG05A
2364-SPK04A
2364-SPM01B
2364-SPM01C
特价现货供应
PLC：Allen-Bradley（AB）全系列，Schneider（施耐德）140，GE 通用电气 IC693 IC697 ，西门子 300 400 PLC
DCS：西屋 ovation，福克斯波罗 ，ABB 贝利 INFI90，TRICONEX ESD
伺服驱动/电机：FANUC，Rexroth，KUKA， ABB 机器人，Schneider LX17
板卡：摩托罗拉 Rexroth ABB KUKA Siemens GE MOORE Siemens
_________________________________________________
厦门航拓电气有限公司
xiamen hangtuo Electric Co., Ltd.
地 址：厦门市思明区仙岳路582号嘉怡园16楼 A单元
联系人：王先生
QQ：250421214
T:0592-5072097
P:18965131350
F:0592-5072083
www.xmhtdq.com
___________________________________________________
（诚信经营）（质量可靠）（进口正品）（顺丰空运）
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DC/DC变换是将可变的直流电压变换成固定的直流电压，也称为直流斩波。斩波器的工作方式有两种，一是脉宽调制方式Ts不变，改变ton(通用)，二是频率调制（
（1）Buck电路——降压斩波器，其输出平均电压U0小于输入电压Ui，极性相同。
（2）Boost电路——升压斩波器，其输出平均电压U0大于输入电压Ui，极性相同。
（3）Buck－Boost电路——降压或升压斩波器，其输出平均电压U0大于或小于输入电压Ui，极性相反，电感传输。
（4）Cuk电路——降压或升压斩波器，其输出平均电压U0大于或小于输入电压Ui，极性相反，电容传输。还有Sepic、Zeta电路。
上述为非隔离型DC-DC变换器电路，隔离型DC-DC变换器有正激电路、反激电路、 半桥电路、全桥电路、 推挽电路。
当今软开关技术使得DC/DC发生了质的飞跃，美国VICOR公司设计制造的多种ECI软开关DC/DC变换器，其 最大输出功率有300W、600W、800W等，相应的功率密度为(6.2、10、17)W/cm3，效率为（80～90）%。日本TDK-Lambda公司最新推出的一种采用软开关技术的 高频开关电源模块RM系列，其开关频率为（200～300)kHz，功率密度已达到27W/cm3，采用同步 整流器（MOSFET代替肖特基 二极管），使整个电路效率提高到90%。
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