22B-B024H204

22B-B024H204

22B-B024H204每位工程师接触的领域不一样，可能有的领域是用PFM比较多，有的是用PWM比较多，但从整个电源行业来说,相信目前还是PWM用的多.上世纪80年代至今，PWM开始了在电源变换领域的“王朝统治"地位,因为每种方式都有缺点和优点.关键还是看是否适合客户需要吧在论坛看到一位网友是这样写的，我觉得写的比较形象，他说如果把PFM与PWM的电源用车来比较的话,用PFM的=奔驰,用PWM的=大众。

22B-B024H204

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 80 AMP

SIEMENS BOLT IN 25 AMP 240 VOLT TYPE BL 2 POLE

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 200 AMP

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 70 AMP

LSI LIGHTRON LIGHT FIXTURE WALL LIGHT 60 WATT, 120 VAC

25 ASSORTED STEEL1" EMT COMPRESSION CONNECTORS  / US

APPLETON TWCC-100 1" BX TO EMT COUPLING  IN FACTORY

GENERAL ELECTRIC 15D21G003 REAL COIL

 CUTLER HAMMER DH030NK NEUTRAL KIT 30 TO 60 A

50 TOTAL ASSORTED STEEL EMT COMPRESSION COUPLINGS  

INTERNATIONAL POWER SOURCES AC/DC POWER SUPPLY DCB304

25 ASSORTED STEEL1" EMT COMPRESSION COUPLINGS

G E TEY 15 AMP 277 VOLT 1 POLE CIRCUIT BREAKER

DEARBORN 16 AWG WIRE BLACK W/WHITE SPIRAL

MICRO SWITCH GREEN LIGHTED PUSHBUTTON 120 V

CROMPTON CURRENT TRANSFORMER 1600:5 80794CU TELS

ABSOLUTE PROCESS INSTRUMENTS ALARM RELAY 115VAC

LITHONIA GALVANIZED STEEL MOUNTING/PLASTER FRAME MVOLT

LITHONIA FLAT BLACK TRACK HEAD LTCFLTB PAR 38 MB DBL

LITHONIA AFW/8AR TRT TRIM DOWN LIGHTING

LITHONIA GRSH 150S 150S 7 277SF HSG U

OPTO 22 LOGIC MODULE ODC5Q

 JARD MAGNETICS TRANSFORMER PRI.120/208/240V - SEC

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 70 AMP

KILLARK 1 1/2" CONDUIT BODY LB CLASS 30

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 30 AMP

OZ GEDNEY SEALTIGHT LIQUIDTIGHT 90o 1 1/2" GROUND CONN

Appleton TCC 125200g Cable Tray Clamp TO CONDUIT

LEVITON 3 P 4 W GROUNDING RECPT 125/250 V 30 AMP

GENERAL ELECTRIC 55-153472G3 REAL COIL

UNISET 3/4 TW ONE HOLE STRAP WITH 1 PIN DCC75100

UNISTRUT 2" 2 HOLE PIPE STRAP NIB BID IS FOR 25 STRAPES

ECG ICE CUBE RELAY 3PDT 10 AMPS, 12VDC COIL

G E PANEL PRO STOCK LUG KIT

OZ GEDNEY SEALTIGHT LIQUIDTIGHT 1 1/2" STR GROUND CONN

KILLARK 1" CONDUIT BODY TYPE TB CLASS 30

T&B SUPERSTRUT CUSHIONED 1 3/8" OD PIPE STRUT STRAP

COOPER/B-LINE PORCELAIN CABLE INSULATOR W/O CLAMP (PR)

OPTO 22 OUTPUT 240 VAC 3A 5 VOLT LOGIC MODULE

LEVITON 3 P 3 W NON GROUNDING RECPT 125/250 V 30 AMP

ALLEN BRADLEY 100-F 4 POLE ,10 AMP ADDER CONTACT BLOCK

LITHONIA GALVANIZED STEEL MOUNTING/ROUGH-IN FRAME

Appleton Tcc-125200G Cable Tray Clamp

LINE ELECTRIC COMPANY, 10 AMP, 3 PDT, 12 VDC COIL ICE

POTTER & BRUMFIELD, 10 AMP, 3 PDT COIL 12 VDC

MUELLER NO. 35 VINYL INSULATORS (SET 1 RED & 1 BLACK)

ORIGINAL DIAZED BOTTLE FS, 50 AMP, 500 VOLT

FINDER ICE CUBE RELAY 60.12.8.120.0040 120VAC COIL

ECG ICE CUBE RELAY DPDT 10 AMPS, COIL 120VAC 50/60Hz

POTTER & BRUMFIELD, 10 AMP, DPDT COIL 120VAC 50/60Hz

LINE ELECTRIC COMPANY, 10 AMP, DPDT COIL 120VAC 50/60Hz

ORIGINAL DIAZED BOTTLE FS, 35 AMP, 500 VOLT

3/4" EMT COUPLINGS COMPRESSION CAT. NO6075S BOX OF 20

FINDER ICE CUBE RELAY 60.13.9.012.0040 12VDC COIL

TOPAZ 1" EMT COMPRESSION COUPLINGS TYPE CAT. NO. 663S