DX522 1SAP245200R0001

DX522   1SAP245200R0001

DX522   1SAP245200R0001

DX522   1SAP245200R0001

NEW PITTMAN GM9236S026-R1 GEAR MOTOR GM9236S026R1

PITTMAN Penn Engineering MOTOR 9236E466 9700-8861-01 REV A 24VDC 500CPR 12-01-04

Pittman GM8722J134-R2 GM8722J134R2 Motor 24VDC

From Philippines

PITTMAN 14203D248 Motor, 3 Each, 38.2 VDC

PITTMAN 13103B392 13103B920 13103B943 QUANTITY! 12VDC BRUSHLESS DC MOTOR

From Canada

Ametek Pittman M642 Servo Motor With Encoder

From Israel

PITTMAN LO-COG MOTOR +CONTROL COMPUTER BOARD

From Canada

pittman DC Motor gear 19.7:1 RATIO Stage XYZ CNC 24VDC+ Encoder

From Israel

pittman DC Motor gear 11.5:1 RATIO Stage XYZ CNC 24VDC+ Encoder

From Israel

MK Products 211-0077 Python Motor Made By Pittman $204

AMETEK PITTMAN / SIGMA / DC MOTOR TACH GEARHEAD ASSEMBLY / GMT9233F023 24 VDC

Pittman 9213C398-R1 Motor (60 Day Warranty)

PITTMAN AMETEK DC MOTOR ENCODER # GM9236S015-R1 24VDC 675RPM 500 COUNT ENCODER

Pittman LO-COG 9236C185-R4 Motor

Linear Stage THK 15mm SR15 V Rails Pittman 12VDC Motor - See Details

Pittman 8322S002 24VDC Motor

From Philippines

PITTMAN 14204C346 24VDC-14000 SERIES BRUSH MOTORS(3PCS)

From Poland

Pittman Motor 6204257-01 Rev. B 1024 CPR 48 VDC w/ Renco 77820-065 Encoder

Pittman 8314G181-R1 DC Servo Motor Encoder

Pittman 8314G182-R1 DC Servo Motor Encoder

C97298 Lot 8 Pittman 24VDC Automation Gear Motors w/ Encoders

PITTMAN GM14902E097 12-9900-035 30VDC MOTOR 

From Israel

NEW PITTMAN GM9234C141 GEAR MOTOR K-6917 REV 04 19.7:1 RATIO 48VDC

PITTMAN TELCOM 4231B465R1 DC SERVO MOTOR W/ HP ENCODER

PITTMAN TELCOM 4113B112 DC SERVO MOTOR

PITTMAN 14203D248 DC SERVO MOTOR WITH HEDS-5500 ENCODER

PITTMAN GM14902D347-R3 12-8800-019 30.3 VDC 500CPR MOTOR 

From Israel

BRAND NEW PITTMAN LO-COG 24 VDC MOTOR GM8212D027-R1

LOT OF 2 PITTMAN LO-COG MOTOR 9434J362-R1 12VDC

Pittman Motor GM9236E513-R1 24VDC 127.7:1 ratio

NEW PITTMAN 801433 MOTOR CABLE 10 FEET 1488448-0001-01

Pittman GM9234C262-R2 DC Motor

One-day shipping available

Pittman GM9433-2 DC Motor

One-day shipping available

PITTMAN GM9433L011-R1 BRUSH COMMUTATED DC GEARMOTOR 12 VDC 38.3:1 RATIO MOTOR

PITTMAN 142045 006 24VDC 500CPR STEPPER MOTOR

QUALITROL IDM-T2-IDM-DAU-DFRO-U/G NSPP IDMT2IDMDAUDFROU

QUALITROL IDM-LSU-MKII NSPP IDMLSUMKII

QUALITROL 9039-0010 USPP 90390010

QUALITROL 109-119-02 USPP 10911902

Qualitrol 038-005-01 Gas Accumulation Indicator FREE SHIPPING

Qualitrol Corp. Rapid Pressure Rise Relay Model # 900-003-01

QUALITROL 108-019-01 USPP 10801901

Qualitrol AKM 35600 Pressure/Vacuum Switch FREE SHIPPING

From Canada

QUALITROL 900-009-01 USPP 90000901

# QUALITROL TEMPERATURE MONITOR MODEL# 118B-120-K-0-2

QUALITROL Flange Mount Rapid Pressure Rise Relay RPRR Model# 900-021-03 NEW

QUALITROL 208-60E, LARGE PRESSURE RELIEF DEVICE

QUALITROL 108-001-01 USPP 10800101

RAPID PRESSURE RISE RELAY 910-006-03 QUALITROL CORP

QUALITROL DAL-042-36 USPP DAL04236

Used Qualitrol Corp Temperature Monitor 111L-X-X 400009767-02

QUALITROL 3718659-G03 NSPP 3718659G03

电子技术是十九世纪末到二十世纪初开始发展起来的新兴技术，二十世纪发展迅速，应用广泛，成为近代科学技术发展的一个重要标志。在十八世纪末和十九世纪初的这个时期，由于生产发展的需要，在电磁现象方面的研究工作发展得很快，1785年法国科学家库伦由实验得出电流的库仑定律。1895 年，荷兰物理学家亨得里克·安顿·洛伦兹假定了电子存在。1897年，英国物理学家汤姆逊（J.J.Thompson）用试验找出了电子。1904年，英国人J.A.Fleming 发明了简单的二极管(diode或 valve)，用于检测微弱的无线电信号。 1906 年，L.D.Forest 在二极管中安上了第三个电极（栅极，grid）发明了具有放大作用的三极管，这是电子学早期历史中重要的里程碑。1948 年美国贝尔实验室的几位研究人员发明晶体管。1958 年集成电路的第一个样品见诸于世。集成电路的出现和应用，标志着电子技术发展到了一个新的阶段。

电子技术研究的是电子器件及其电子器件构成的电路的应用。半导体器件是构成各种分立、集成电子电路基本的元器件。随着电子技术的飞速发展，各种新型半导体器件层出不穷。现代电力电子技术的发展方向，是从以低频技术处理问题为主的传统电力电子学，向以高频技术处理问题为主的现代电力电子学方向转变。电力电子技术起始于五十年代末六十年代初的硅整

电子产品

电子产品

流器件，其发展先后经历了整流器时代、逆变器时代和变频器时代，并了电力电子技术在许多新领域的应用。八十年代末期和九十年代初期发展起来的、以功率MOSFET和IGBT为代表的、集高频、高压和大电流于一身的功率半导体复合器件，表明传统电力电子技术已经进入现代电力电子时代。

Qualitrol DAL-042-49 DAL04249 Level Gage - Used

Qualitrol Pressure / Vacuum Gauge 050-011-01

From Canada

QUALITROL 1050-35K USPP 105035K

QUALITROL 250 ELECTRONIC ANALOG TEMPERATURE CONTROLLER MODEL 107-002-01 **XLNT**

QUALITROL 48515-1 Power Supply NEW

Qualitrol Air Pressure Relief Valve 5 PSIG 201-020-08T

QUALITROL 108-018-01 ELECTRONIC TEMPERATURE MONITOR CONTROLLER 69597

QUALITROL 108-018-01 ELECTRONIC TEMPERATURE MONITOR CONTROLLER 69691

QUALITROL 108-018-01 ELECTRONIC TEMPERATURE MONITOR CONTROL 277V 69692

QUALITROL CORP. LARGE PRESSURE RELIEF DEVICE, 208-60S, 12 PSI, 0.83 BAR, 410725

QUALITROL PRESSURE RELIEF DEVICE, 208-60S, 12 PSI, 0.83 BAR, 410727, 06/23/08

NEW QUALITROL 208-60U LARGE PRESSURE RELIEF DEVICE 8PSI 68714

Qualitrol /ITE QualTherm Liquid Temprature Gauge 0-120C

NEW QUALITROL TRANSFORMER OIL FLOW METER INDICATOR N/R!

QUALITROL 165-50-12J QUALITHERM 0-120C DEG. TEMPERATURE GAUGE BRASS 4.5IN 57492

QUALITROL PRESSURE VACUUM SWITCH VALVE BOX#33