NW-RR85-001 亿佳没套路
电源选型推荐
整个DTU系统的电源解决方案，主要考虑到不间断供电的问题，所以需要双电源供电的一个供电形式，主流的供电方式一般是有两部分组成，一部分是大功率300W或者500W的AC/DC充电电源，这个电源一般两路输出，一路给后级的板卡进行供电，一方面给后级的蓄电池或者是超级电容进行充电；另外的一部分就是蓄电池或者超级电容，这个主要是在市电断电的情况下，整个系统的正常运行。另外，电网对于EMC方面的要求比较苛刻，特别是浪涌方面，需要满足4级的要求。主电源和蓄电池都掉电时，系统掉电保持时间500mS以上。
根据上面的应用描述，我们推荐选用金升阳MBP500-2A54D54的接线式电源，它具备电池充电功能，可对48V 铅酸电池充电；工业级工作温度：-40℃～+70℃；2500VAC 隔离电压；大瞬时过功率达540W；的EMC性能；接线式安装。
另外，如果铅酸电池的电压值为24V，还可以选用金升阳公司的MBP300-2A27D27的接线式电源，可对24V的铅酸电池充电，稳态功率达到351W。
电源是电子设备必不可缺的组成部分,其性能优劣直接关系到电子设备的技术指标及能否可靠地工作。目前常用的直流稳压电源按功率管的工作方式分为线性电源和开关电源两大类。线性稳压电源亦称串联调整式稳压电源,电路技术比较成熟。具有低纹波、稳压性能等优点。但由于使用工频变压器,且调整管工作在线性放大区,因而体积大和重量大、效率低。开关电源调整管工作在频开关状态,功率损耗小,且使用小体积的频变压器替代笨重的工频变压器来实现电压变换和电网隔离。
为解决传统的PWM型变换器的上述问题,可采用谐振、准谐振、多谐振以及具软开关的PWM型变换器。这些变换器吸收、利用了PWM型变换器中的寄生参数或外加电感、电容作为谐振参数,使变换器中的功率开关在零电压或零电流下开通和关断,开关两端的电压或经过开关的电流是正弦或半正弦波形。因此大大减少开关的瞬问损耗和开关应力以及电磁干扰和射频干扰.使其工作频率可进一步提到1Mhz以上，效率达90%以上。再加上小型片状电子元器件,包括磁性材科,例如:平板型变压器等以及表面安装技术以及散热方式的改进，就使电源系列、标准化、模块化成为现实。
DANIEL WOODHEAD 1203GC * IN A BOX*
Daniel Woodhead 1207A163 Hand Lamp with Aluminum guard, 25' cord. in box.
DANIEL WOODHEAD 125/250V 10/15A WATERTITE TURNEX CONNECTOR, 25W07 * SEALED*
DANIEL WOODHEAD 125V 15A 2P 3W WATERTITE PLUG, 14W47 * *
DANIEL WOODHEAD 125V 15A 2-POLE 3-WIRE GROUNDING CONNECTOR, 5269 * SEALED*
DANIEL WOODHEAD 1300060252 CABLE * OUT OF BOX*
DANIEL WOODHEAD 1300080279 1300080279
DANIEL WOODHEAD 1300120113 1300120113
DANIEL WOODHEAD 1300130172 1300130172
DANIEL WOODHEAD 130013-0202 1300130202
DANIEL WOODHEAD 1300130354 * IN FACTORY BAG*
DANIEL WOODHEAD 130017-0015 1300170015
DANIEL WOODHEAD 1300920109 1300920109
DANIEL WOODHEAD 1300950166 1300950166
DANIEL WOODHEAD 1300970249 1300970249
DANIEL WOODHEAD 1300970249 1300970249
Daniel Woodhead 1300990002 Max-Loc Cord Grip 1/2" Plastic Mesh 3R 5528NMLW
Daniel Woodhead 1301040041 Haztex Hazardous Duty Handlamp 100W 120V Red 61430
DANIEL WOODHEAD 130137-0087 1301370087
DANIEL WOODHEAD 1301370127 (3005-1) MULTIPLE OUTLET BOX * IN A BOX*
DANIEL WOODHEAD 1301420045 ConECTOR * IN FACTORY BAG*
DANIEL WOODHEAD 1301420052 CONNECTOR-SUPER SAFEWAY * IN A BOX*
Daniel Woodhead 1301460149 Watertite Flip Lid Turnex Female Receptacle 65W49
Daniel Woodhead 1301470025 26W74 Watertite Plug L14-20 20A 125/250V
Daniel Woodhead 1301470027 Watertite Plug 3-Phase
Daniel Woodhead 1301470027, 26W75 Plug T73065
DANIEL WOODHEAD 1301470059 * IN A BOX*
DANIEL WOODHEAD 1301470083 1301470083
DANIEL WOODHEAD 1301470083 1301470083
DANIEL WOODHEAD 1301470083 PLUG-WATERTITE NEMA L17-30 30A 3PH NEOTEX RUBBER
Daniel Woodhead 1301470085 Watertite Turnex Neotex Rubber Plug 120/208V 30A
DANIEL WOODHEAD 1301470105 ConNECTOR * *
DANIEL WOODHEAD 1301470111 CONNECTOR-WATERTITE NEMA L17-30 3PH NEOTEX RUBBER
DANIEL WOODHEAD 1301470141 * *
DANIEL WOODHEAD 1301480115 1301480115
Daniel Woodhead 1301490084 Single Turnex CAT#: 4975CR | !! | lot of 3 | #3203
DANIEL WOODHEAD 1301510001 1301510001
Daniel Woodhead 1301510013 Safeway Adapter For 15A/125V Single-Phase Ground
DANIEL WOODHEAD 1301510025 Safeway Adapter 15 Amp 1744 *Price Per Each*
DANIEL WOODHEAD 1301520016 WATERTITE-PIGTAIL SOCKET * IN A FACTORY BAG*
DANIEL WOODHEAD 1301530226 SWITCH * IN A BOX*
Daniel Woodhead 130470056 Watertite Nema Connector 250V
DANIEL WOODHEAD 1350302 **NIB**
DANIEL WOODHEAD 1404 1404
DANIEL WOODHEAD 1404 1404
DANIEL WOODHEAD 1433 PLUG NEMA 5-20 20AMP 125V SUPER SAFEWAY 812D5
DANIEL WOODHEAD 14W07 14W07
DANIEL WOODHEAD 14W07-OS 14W07OS
Daniel Woodhead 14W33
DANIEL WOODHEAD 14W33 WATERTITE PLUG
DANIEL WOODHEAD 14W33B123 50Ft WATERTITE CORD 12-3 WIRING
Daniel Woodhead 1504 Connector Super Safeway Nema 1-15 15A 125V
DANIEL WOODHEAD 15050-3TTA 150503TTA
DANIEL WOODHEAD 15052-1 15 AMP 1 FOOT INLINE SAFE-T-CHECK GFCI
DANIEL WOODHEAD 15052-1 150521
Daniel Woodhead 15052-1M 1ft inline GFCI Cord Set 15 Amp 120 Vac Manual Reset
Daniel Woodhead 1533 Connector - Super Safeway
Daniel Woodhead 1547 Super Safeway Connector Nema 5-15R 15amp 125V
DANIEL WOODHEAD 1547BLK COMMERCIAL GRADE PLUG * IN FACTORY PACKAGE*
DANIEL WOODHEAD 1547GCM SUPER SAFEWAY ConNECTOR / GCM 15A 125V 5-15R NIB
DANIEL WOODHEAD 1547R 1547R
Daniel Woodhead 15A 125V Straight Blade Connector Abrasion Resistant -- 1504 --
Daniel Woodhead 15A 125V Watertite Receptacle & Cover Plate -Pad Lockable -
Daniel Woodhead 15A, 125V Male Connector -- 1404 -- (Lot of 3)
DANIEL WOODHEAD 15FLRC 15FLRC
DANIEL WOODHEAD 15L47 CONNECTOR-SUPER SAFEWAY LIGHTED
Daniel Woodhead 15W04 Watertite Connector - No Box
DANIEL WOODHEAD 15W07 15W07
DANIEL WOODHEAD 15W47 ConNECTOR WATERTIGHT 15AMP 125V
DANIEL WOODHEAD 15W47 ConNECTOR WATERTIGHT... .. NEMA 5 15R 15Amp 125 Volt
DANIEL WOODHEAD 15W47 WATERTIGHT ConNECTOR 125V 15A
DANIEL WOODHEAD 1640 SAFEWAY
DANIEL WOODHEAD 1640-12 164012
daniel woodhead 1652-6v Incandescent Hazardous Duty Hand Lamps - Low Voltage
DANIEL WOODHEAD 1660S LOW-VOLTAGE LIGHTING FLOODLIGHT HANDLE W/SWITCH 1660S
DANIEL WOODHEAD 1675-12 / 1678-12 * *
Daniel Woodhead 1705 15A 125V 2p 3W Plug Adapter
DANIEL WOODHEAD 1712 1712
DANIEL WOODHEAD 1712 1712
DANIEL WOODHEAD 1733 SAFEWAY ADAPTER MALE/FEMALE 20A ConDITION IN PACKAGE
DANIEL WOODHEAD 1760 Receptacle Tension Tester (3 PACK)
DANIEL WOODHEAD 1760 Receptacle Tension Tester, with Case
DANIEL WOODHEAD 1760 Receptacle Tension Tester, with Case !!!
DANIEL WOODHEAD 17W47 17W47
DANIEL WOODHEAD 17W47 17W47
DANIEL WOODHEAD 1891 1891
DANIEL WOODHEAD 1892-I 1892I
DANIEL WOODHEAD 1991 1991
Daniel Woodhead 1A3000-34 Sensor Receptacle Connector 3-Pos NWB
DANIEL WOODHEAD 1A3002-34 MALE STRAIGHT ConNECTOR * IN A BAG*
DANIEL WOODHEAD 1A4002-34 1A400234
DANIEL WOODHEAD 1A500234 **NIB**
DANIEL WOODHEAD 1A5002-34 CORD SET * IN FACTORY BAG*
DANIEL WOODHEAD 1R2007A20A120 * IN FACTORY BAG*
DANIEL WOODHEAD 1R3004A20A120 CORDSET 3 POLE FEMALE STRAIGHT 12 INCHES
DANIEL WOODHEAD 1R3006A20A120 CABE RECEPTACLE 600V 13A
DANIEL WOODHEAD 1R3006A20M010 1R3006A20M010
DANIEL WOODHEAD 1R3006A20M020 1R3006A20M020
DANIEL WOODHEAD 1R4000A20A120 MOLEX FEMALE 4 PIN 16AWG ConNECTOR CABLE
Daniel Woodhead 1R4000A39M030 Mini-Change Receptacle
Daniel WOODHEAD 1R4004A20A120 4P FEMALE STRAIGHT
DANIEL WOODHEAD 1R4004A20F060 4 POLE FEMALE STRAIGHT 6', #145209
DANIEL WOODHEAD 1R4006A20A120 CORDSET 4 POLE M/F ST/ST 12"
Daniel Woodhead 1R4D04A16A120 Mini Charge Receptacle 4-Pin Female IN BAG
DANIEL WOODHEAD 1R4D04A16M020 1R4D04A16M020
Daniel Woodhead 1R4G04A20F030 Connector
DANIEL WOODHEAD 1R5004A20F060 SINGLE-ENDED RECEPTACLE 5 POLE MINI 6'
DANIEL WOODHEAD 1R5004A20F060 SINGLE-ENDED RECEPTACLE 5 POLE MINI 6', SEE DESC
Daniel Woodhead 1R5006A20A120 8A 600V 5 Pin Male Connector
Daniel Woodhead 1R5007A20A120 Connector
Daniel Woodhead 1R6004A20A120 Cable Receptacle
Daniel Woodhead 1R6004A20A120 Cable Receptacle
DANIEL WOODHEAD 1R6006A20A120 * *
DANIEL WOODHEAD 1R6006A20F060 1R6006A20F060
DANIEL WOODHEAD 20051-1 200511
Daniel Woodhead 20051-1 Safe T Check GFCI Portable Outlet Box 20A 120VAC
DANIEL WOODHEAD 20052-1M Line Cord GFCI, 20A, 120V, 2 ft, Black
DANIEL WOODHEAD 200XPBOUT45 200XPBOUT45
DANIEL WOODHEAD 207000A01F0301 207000A01F0301
DANIEL WOODHEAD 208000A01F200 CABLE * IN FACTORY BAG*
DANIEL WOODHEAD 2126S **NNB**
DANIEL WOODHEAD 226020A01F030 226020A01F030
DANIEL WOODHEAD 227020A01F100 227020A01F100
DANIEL WOODHEAD 227020A01M010 227020A01M010
DANIEL WOODHEAD 227020A01M030 **NNB**
Daniel Woodhead 228020A01F120 Cable Assembly 8P M/F 12' Great Condition!!!!!
DANIEL WOODHEAD 22805 22805
DANIEL WOODHEAD 22807 ConNECTOR * IN A FACTORY BAG*