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，保证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，需要完全满足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 高隔离电压；大瞬时过功率达540W；优越的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。
电源是各种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安全可靠地工作。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、高稳压性能等优点。但由于必须使用工频变压器,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高频开关状态,功率损耗小,且使用小体积的高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高到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。

New Honeywell R7847A1033 R7847 A 1033 Burner Controller
#50 Honeywell Measurex Edge Det Processor 05311400 Rev C
*NEW*  HONEYWELL    621-1180RC  115 VAC INPUT   60 DAY WARRANTY!
*NEW* HONEYWELL 621-1180RC 115 VAC INPUT 60 DAY WARRANTY!
~ Honeywell Screw Terminal Block Excel 800 Controller  XSU821-22 NIB    EC4-3
~ Honeywell Screw Terminal Block Excel 800 Controller XSU821-22 NIB EC4-3
?Yamatake Honeywell AZBIL J-DIM00 /??DHL shipping
1 PC  Honeywell 621-9939-C Link Module for Series 9000 In Good Condition
1 PC  Honeywell XCL5010 Controller Module In Good Condition
1 PC Honeywell 621-9939-C Link Module for Series 9000 In Good Condition
1 PC Honeywell XCL5010 Controller Module In Good Condition
1 PC New Honeywell DN65 ball valve B5011C0065
1 PC New Honeywell R4343E1014 Relay Flame Detecto In Box
1 PC New Honeywell R7849 A 1015
1 PC New Honeywell R7861 A 1026 Self Check Ultraviolet Flame Amplifier In Box
1 PC New Honeywell Voyager 1400G 2D Area-Imaging Scanner
1 PC Used Honeywell 621-9939-C Link Module for Series 9000 In Good Condition
1 PC Used Honeywell XCL5010 Controller Module In Good Condition
1 pcs  Honeywell  L404F1102 pressure controller
1 pcs  HONEYWELL  LSXA3K-1A Limit switch
1 pcs  HONEYWELL CP-WM-VAV control panel
1 PCS  Honeywell HC900 DCS 900P01-0001 Tested
1 pcs HONEYWEL BXA3K-1A Explosion-proof limit switch
1 pcs honeywell  129464N  Ultraviolet phototube
1 pcs honeywell  R7861A1026 Protection relay
1 pcs honeywell  V5011P1038
1 pcs honeywell 129464N Ultraviolet phototube
1 pcs honeywell C7035A1023  Flame Sensor
1 pcs honeywell C7035A1023 Flame Sensor
1 pcs HONEYWELL CP-WM-VAV control panel
1 PCS Honeywell HC900 DCS 900C53-0001 Module Tested
1 PCS Honeywell HC900 DCS 900G02-0001 in good condition
1 PCS Honeywell HC900 DCS 900P01-0001 Tested
1 pcs Honeywell L404F1102 pressure controller
1 pcs HONEYWELL LSXA3K-1A Limit switch
1 pcs honeywell R7849A1023
1 pcs honeywell R7861A1026 Protection relay
1 pcs honeywell TBC1800A1011
1 pcs honeywell V5011P1038
1 PCS NEW Honeywell Pressure Switch SN3-280-LED
1 PCS New IN BOX Honeywell Air Valve Actuator D20010 D20010
1 PCS NEW IN BOX Honeywell Flame Monitor R4343D1017
1 product rating- 1 PC New Honeywell R7861 A 1026 Self Check Ultraviolet Flame Amplifier In Box
1 product rating- 1 pcs Honeywell L404F1102 pressure controller
1 product rating- 100% Tested Honeywell 5010 XC5010C 60-Day Warranty [1ix]
1 product rating- 1PC Brand New Honeywell R7861A1026 Burner Controller DHL free shipping
1 product rating- 1PC New Brand Honeywell R7861 A 1026 One year warranty R7861A1026 Fast Delivery
1 product rating- 1PC New Honeywell 3310G scanning platform fixed barcode scanner free shipping
1 product rating- 1PC New Honeywell L404F1094
1 product rating- 1PC New Honeywell R7861 A 1026 Self Check Ultraviolet Flame Amplifier R7861A102
1 product rating- 1PC New Honeywell R7861A1026 Burner Controller 1 year warranty
1 product rating- 1PC New Honeywell R7861A1026 Burner Controller 1 year warranty#XR
1 product rating- 1PC New Honeywell R7861A1026 Burner Controller one year warranty fast delivery
1 product rating- 1PC New Honeywell R7861A1026 Burner Controller one year warranty free shipping
1 product rating- 1PC New Honeywell RF receiver module spare parts W8665E1000 1 year warranty#XR
1 product rating- 1PC New in box Honeywell R7861 A 1026 One year warranty R7861A1026 Fast Delivery
1 product rating- 1PC New LSN1A honeywell limit switch
1 product rating- 1pcs New Honeywell Pressure Controller L404F1102
1 product rating- Brand New Honeywell R7861A1026 Burner Controller DHL free shipping
1 product rating- EXCEL. HONEYWELL RM7838B1013 BURNER CONTROL R7861A1026,ST7800A1005,Q7800A1005,BV
1 product rating- Full Tested Honeywell 5010 XC5010C 60-Day Warranty [fkc]
1 product rating- HONEYWELL 113228 / 113228 (NEW IN BOX)
1 product rating- Honeywell 113228 Bulb
1 product rating- HONEYWELL 30756113-501 / 30756113501 (BRAND NEW)
1 product rating- HONEYWELL 3310G / 3310G (USED TESTED CLEANED)
1 product rating- HONEYWELL 3310G-4USB-0 / 3310G4USB0 (NEW IN BOX)
1 product rating- HONEYWELL 5495 / 5495 (USED TESTED CLEANED)
1 product rating- HONEYWELL 5881ENHC / 5881ENHC (NEW IN BOX)
1 product rating- HONEYWELL 620-0090 / 6200090 (USED TESTED CLEANED)
1 product rating- HONEYWELL 620-0090 ISSC IPC PLC MODULE CARD I/O RACK CHASSIS
1 product rating- HONEYWELL C7035A-1023 / C7035A1023 (BRAND NEW)
1 product rating- HONEYWELL FLAME SAFEGUARD RA890H1052 *USED*
1 product rating- HONEYWELL HM600XROF1 / HM600XROF1 (BRAND NEW)
1 product rating- HONEYWELL L4017B-1194 / L4017B1194 (USED TESTED CLEANED)
1 product rating- HONEYWELL L91B1035 / L91B1035 (BRAND NEW)
1 product rating- HONEYWELL L91B-1050 / L91B1050 (BRAND NEW)
1 product rating- HONEYWELL M8405A-1006 / M8405A1006 (BRAND NEW)
1 product rating- HONEYWELL M8405A1006 24V 3 POSITION DAMPER
1 product rating- Honeywell M8405a1006 Electric Actuator,25 In.-Lb.,24Vac
1 product rating- HONEYWELL M8405A1006 M8405A1006 24V 3 Position Damper
1 product rating- Honeywell M8405A1006/B 24 Vac Modulating Motor
1 product rating- Honeywell M9182A-1011 Modutrol IV Motor M9182A1011 Tested
1 product rating- HONEYWELL ML6174B-2019 / ML6174B2019 (BRAND NEW)
1 product rating- HONEYWELL MP953C1083 Mp953C1083 Valve Actuator
1 product rating- Honeywell MP953C1083 Valve Actuator
1 product rating- HONEYWELL MS4120A1209 / MS4120A1209 (BRAND NEW)
1 product rating- Honeywell MS4120A1209/U Honeywell Two Position Direct-Coupled Actuator
1 product rating- HONEYWELL MS4120F1006 Electric Actuator,-40 to 130F,SPST
1 product rating- HONEYWELL MS4120F1006, SPRING RETURN,TWO-POSITION 175 lb-in - FREE SHIPPING
1 product rating- Honeywell MS4120F1006/U Honeywell Fast-Acting, Actuator
1 product rating- HONEYWELL Q179A-1183 / Q179A1183 (BRAND NEW)
1 product rating- HONEYWELL R7847B-1031 / R7847B1031 (USED TESTED CLEANED)
1 product rating- Honeywell R7861A 1026 Industrial Control System NEW CIB - Free Shipping
1 product rating- HONEYWELL R7861A-1026 / R7861A1026 (USED TESTED CLEANED)
1 product rating- HONEYWELL RM7838 B 1013 ST7800A 1005,R7847C1005,dynamic Flame Burner ,HA
1 product rating- HONEYWELL RM7838 B 1013,ST7800A 1005,R7847 B 1031,dynamic Flame Burner ,SH
1 product rating- HONEYWELL RM7885A1015 BURNER CONTROL
1 product rating- Honeywell RM7890 B 1048 Primary Flame Safeguard Burner Boiler Control Relay
1 product rating- Honeywell RM7890 B 1048 Primary Flame Safeguard Burner Control Relay Module
1 product rating- HONEYWELL S87D1012 S87D1012 Dsi Control 11 Sec.
1 product rating- HONEYWELL S87K1008 / S87K1008 (BRAND NEW)
1 product rating- HONEYWELL SV9520H8513 / SV9520H8513 (BRAND NEW)
1 product rating- HONEYWELL T991A-1061 / T991A1061 (NEW IN BOX)
1 product rating- HONEYWELL UDC3000 TEMPERATURE CONTROLLER DC300K-E-0A0-21-0000-W
1 product rating- Honeywell V4055A1007 Low Pressure On/OFF Actuator Used on V5055/V5097A/B Valves
1 product rating- HONEYWELL V4943A1029 / V4943A1029 (BRAND NEW)
1 product rating- HONEYWELL V8944N-1012 / V8944N1012 (BRAND NEW)
1 product rating- Honeywell V8944N1012 Industrial Diaphragm Gas Valve
1 product rating- HONEYWELL Y8610-U-3003 / Y8610U3003 (NEW IN BOX)
1 product rating- Honeywell Y8610U6006 Electronic Retrofit Ignition System for LP or Natural Gas
1 product rating- NEW HONEYWELL MS4120F1006 DIRECT COUPLED ACTUATOR 2 POSITION
1 product rating- NEW IN BOX Honeywell R7861A1026 Burner Controller 1 year warranty
1 product rating- ONE USED Honeywell controllers PUL4024S USED
1 product rating- R7861A1026 Honeywell Burner Controller 1 Year Warranty New
1 product rating- S87D1012 Honeywell Dsi Module 11 Sec. Lockout OEM S87D1012
1 product rating- USED HONEYWELL BURNER CONTROL RM7823A1016,BOXZL
1 product rating- USED HONEYWELL M9182A-1011 MODUTROL IV MOTR M9182A1011
1 product rating- USED HONEYWELL RM7823 A 1016 BURNER CONTROL RM7823A1016
1 X CSNK591-001 CSNK591001 CSNK591 HONEYWELL CURRENT SENSOR NEW IN BOX
100% NEW Honeywell 113228 in box
100% NEW Honeywell 129464N in box
100% NEW Honeywell BC1000A0220U in box
100% NEW Honeywell BC1000A0220U/E in box
100% NEW Honeywell C7035A 1023 in box
100% NEW Honeywell H