6SL3352-1AG34-7EA1

6SL3352-1AG34-7EA1

6SL3352-1AG34-7EA1 

变换器是通过与内部频率同步开关进行升压或降压，通过变化开关次数进行控制，从而得到与设定电压相同的输出电压。PFM控制时，当输出电压达到在设定电压以上时即会停止开关，在下降到设定电压前，DC/DC变换器不会进行任何操作。但如果输出电压下降到设定电压以下，DC/DC变换器会再次开始开关，使输出电压达到设定电压。PWM控制也是与频率同步进行开关，但是它会在达到升压设定值时，尽量减少流入线圈的电流，调整升压使其与设定电压保持一致。

与PWM相比，PFM的输出电流小，但是因PFM控制的DC/DC变换器在达到设定电压以上时就会停止动作，所以消耗的电流就会变得很小。因此，消耗电流的减少可改进低负荷时的效率。PWM在低负荷时虽然效率较逊色，但是因其纹波电压小，且开关频率固定，所以噪声滤波器设计比较容易，噪声也较简单。

6SL3352-1AG34-7EA1 

CUTLER HAMMER VARIABLE DEPTH ROTARY SWITCH 12 INCH SHA

CUTLER HAMMER FREEDOM SERIES STARTER SIZE 00 AN16A2

Sqaure D Telemecanique LC2D0901 Reversing STARTER

ITE CIRCUIT BREAKER 2 POLE 225 A, 240 VAC QJ2-B225

 LITHONIA LAY-IN 2 X 2 PAROBALIC 9 CELL FIXT

ALLEN-BRADLEY BULLETIN AC CONTACTOR SIZE 0 2 POLE 18AMP

ALLEN BRADLEY 100SC09ZJ404C SER A CONTACTOR

SQUARE D 20 AMP 277 V 1 POLE EGB CIRCUIT BREAKER

ALLEN-BRADLEY SIZE O MOTOR STARTER

ALLEN BRADLEY 100-C09ZJ01 A CONTACTOR

ALLEN BRADLEY 140M-C2E-B16 B MOTOR PROTECTOR

ROCKWELL AUTOMATION DRVIE SHAFT ASSEMBLY

Dynisco Hydraulic Pressure Transducer PT450TA 1C M45

 TASK MASTER REXROTH AIR CYCLINDER 1 1/2 X 10

 TASK MASTER REXROTH AIR CYLINDER 2x4

SQ D SAFETY SWITCH SINGLE THROW FUSIBLE 60 AMP 240 VAC

CUTLER HAMMER BR115AF 15 AMP 1 POLE 120 VOLT BREAKER

 CUTLER HAMMER PHOTOELECTRIC E64 THRU-BEAM SE

 TELEDYNE FARRIS ENGINEERING WATER VALVE 2745 sp

SQUARE D MICROLOGIC NEUTRAL CURRENT TRANSFORMER

GENERAL ELECTRIC CIRCUIT BREAKER 3 POLE 20 A, 480 VAC

GE MOLDED CASE CIRCUIT BREAKER 3 POLE 20 A, 480 VAC

VOYAGER COMPUTER PANEL VIEW INTERFACE

 MEASUREMENT TECHNOLOGIES SIGNAL ISOLATION IN HAZARD

BANNER VALU-BEAM RETROREFLECTIVE SENSOR

CUTLER HAMMER 2 POLE STARTER 115-230 VOLTS 1 HP

PHEONIX CONTACT TYPE UMK-SE11 25-1 TERMINAL

GE ENCLOSED SIZE 0 STARTER W/115VOLT COIL

SQ D SAFETY SWITCH SINGLE THROW NO F 30 AMP 600 VAC

WESTINGHO MANUAL STARTER SIZE MO 3 PHASE

RED LION CONTROL CUB3T010 ELECTRONIC TIMER

 SQUARE D 9998 TA-81 CONTACT FIXED SIDE ONLY FITS 8

OPTO 22 PB224HQ TERMIMANL SYSTEM

OPTO 22 PB16HC TERMIMANL SYSTEM

SQUARE D CIRCUIT BREAKER, EDB 20 A, 1 POLE, 277 V

GENERAL ELECTRIC MANUAL STARTER PB OPERATED 2 POLE 1 OL

CUTLER HAMMER HRGCV14L MECH BLACK EXT HANDLE

 DAYBRIGHT WALL LIGHT #WB217-WO 277 VOLT 2

ALLEN BRADLEY DYNAMIC BRAKE 1305-KBA06

JOHNSON CONTROLS STEAM PRESSURE CONTROL P47BA-2C

 SQUARE D CONTROL INTERLOCK EK1020-1 FOR 100

Task Master Rexroth air cylinder 1 1/2 x 6

DAYBRIGHT EMERGENCY LIGHT 2 HEAD ADJUSTABLE 120/277V

ISIATROL ELITE ACTIVE TRACKING FILTER CONTROL CONCEPTS