CM202
CM202
-----
-----
开关式稳压电源接控制方式分为调宽式和调频式两种，在实际的应用中，调宽式使用得较多，在目前开发和使用的开关电源集成电路中，绝大多数也为脉宽调制型。因此下面就主要介绍调宽式开关稳压电源。
调宽式开关稳压电源的基本原理可参见下图。
对于单极性矩形脉冲来说，其直流平均电压Uo取决于矩形脉冲的宽度，脉冲越宽，其直流平均电压值就越高。直流平均电压Ｕ。可由公式计算，
即Uo=Um×T1/T
式中Um为矩形脉冲zui大电压值；T为矩形脉冲周期；T1为矩形脉冲宽度。
从上式可以看出，当Um 与T 不变时，直流平均电压Uo 将与脉冲宽度T1 成正比。这样，只要我们设法使脉冲宽度随稳压电源输出电压的增高而变窄，就可以达到稳定电压的目的。
TRIAD CONTROLS MG-16-0F-AU 120 VAC 60 HERTZ LIGHT CURTAIN TRANSMITTER
DELPHI MASS AIR FLOW SENSOR AF10003
IFM EFECTOR PROXIMITY SWITCH IEB3001-APOG
BIMBA MAGNETIC REED SWITCH MRS-.027
BALLUFF INDUCTIVE SENSOR BES 517-561-H-RK NIB
SICK * 30 FGS SAFETY LIGHT CURTAIN * FGSE 1200-221
DELPHI OXYGEN SENSOR ES10412 NIB
KISTLER-MORSE MICROCELL SENSOR WEIGHING SYSTEM KIT 35-2019-01/-02
DELPHI THROTTLE POSITION SENSOR SS10487 NIB
DELPHI TS10034 TEMPERATURE SENSOR, NIB
NAMCO EE530-58420 PROXIMITY SWITCH
WESTINGHOUSE CURRENT SENSOR ITE-K1600
TESTRON BODY TEST CONNECTION T-99963
FOXBORO PLATINUM RESISTANCE TEMPERATURE DETECTORS NIB PR-14WBS-012
SICK * C4000 STANDARD LIGHT CURTAIN * C40E-0603CA010
PEPPERL+FUCHS CUSHIONED SENSOR MOUNT, CM-18, NNB
BANNER MULTI-BEAM SCANNER BLOCK 17628
PEPPERL + FUCHS 20-250VAC PROXIMITY SENSOR NJ15+W
IFM EFECTOR IE5129 IE-3001-BPOG POSITION INDUCTIVE PROXIMITY SENSOR, NIB
NAMCO 20-230VAC/DC, 0.5A CYLINDICATOR SENSOR EE230-27820
OMRON THROUGH BEAM LASER SENSOR HEAD ZX-LT010
MAGNETIC PULSE SENSOR ASSEMBLY W/20" RIGHT ANGLE CABLE AA01.4601, NNB
EFECTOR 200 OJ5019 PHOTOELECTRIC SENSOR, NIB
IFM EFECTOR IG0335 PROXIMITY SWITCH, NIB
NAMCO * PROXIMITY SWITCH NIB * EE280-98200
BALLUFF PROXIMITY SWITCH BES 516-118-B0-C NNB
IFM SENSOR OG5041 OGE-FPKG
TRI-TRONICS FIBER OPTIC LIGHT GUIDE SENSOR BF-D-16-219 NIB
BANNER SM912F VALU-BEAM PHOTOELECTRIC SCANNER, NIB
BALLUFF LIMIT SWITCH BNS 519-100-D-11
STI * MINISAFE RECEIVER * MS4320BR
REXROTH 553 -001-1200 FLOW SENSOR, NNB
ACCU-SORT SYSTEMS BARCODE SCANNER MODEL 55
BEI MOTION SYSTEMS ENCODER 924-01002-2521
DELPHI TS10120 TEMPERATURE SENSOR, NIB
RIS STRAIN GAUGE TRANSMITTER SC-1390-C
DELPHI ENGINE CRANKSHAFT POSITION SENSOR ES10174 NIB
PEPPERL + FUCHS PROXIMITY INDUCTIVE SENSOR NIB 904159 101780
CUTLER HAMMER EATON PROXIMITY SENSOR E57LAL30T111
SIERRA MONITOR CORPORATION COMBUSTIBLE GAS SENSOR MODULE 5100-02-IT
IFM EFECTOR SI1000+E40107 FLOW MONITOR SENSOR SI8503 NIB
SICK LIGHT CURTAIN RECEIVER C40E-0603CC010
DELPHI SS10250 SPEED SENSOR, NIB
DELPHI SS10415 SPEED SENSOR, NIB
DELPHI SS10250 SPEED SENSOR, NIB
DELPHI SS10332 SPEED SENSOR, NIB
SONY MAGNESWITCH SENSOR PG-104 NIB
ALLEN BRADLEY GLASS FIBER OPTIC CABLE, 43GR-MVS00SL SER. A
