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MC1439G
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MC1439G - - -

Pinout/Connection Diagram

mc1439g Circuit
Simple opamp circuit with one transistor gives reliable hot-wire anemometer for measuring flow of gases or liquids.  R2 is heated above ambient temperature in Wheatstone  bridge including overheat resistor R1which is calibrated to be 30% larger than cold resistance of R2.   Bridge is fed from power tran.sistor which is within feedback loop of opamp that senses bridge unbalance.   Output of bridge is fed back to power  transistor  in  correct  phase  for  maintaining  constant- temperature  condition  in  which  R2 is approximately equal to R1.  Article covers construction of hot-wire probe made from Wollaston wire.-W. Bank, Build Your Own Constant-Temperature Hot-Wire Anemometer, EDN Magazine, Aug. 1, 1972, p 43.

Supplier

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  Part Number Mfg Pack D/C Qty Note
MC1439G MOT 624 Professional IC Supplier in China
  RANTLE EAST ELECTRONIC TRADING CO China (Mainland)
Contact: Ms. Jessica Wong   MSN:rantle-east@hotmail.com Tel: 86-754-84475086 Fax: 86-754-84471197
MC1439G MOTOROLA CAN 03+ 3000
  JY(HK)ELECTRONICS CO.,LTD Hong Kong
Contact: Ms. Claire Huang   MSN:claire-jy@hotmail.com Tel: 86-755-82887756 Fax: 86-755-82886700
MC1439G MOTOROLA CAN 07+ 3300
  Mingar Electronic (HK) Limited China (Mainland)
Contact: Ms. Kaisy   MSN:mingar.hk@gmail.com Tel: 86-755-82767182 Fax: 86-755-82767423
MC1439G MOTOROLA CAN 1500
  HK MEIHANG TECHNOLOGY CO.,LTD China (Mainland)
Contact: Ms. Ruby   MSN:sales2@tbf.hk Tel: 86-755-83752779 Fax: 86-755-83752881
MC1439G MOTOROLA CAN 365 NEW IN STOCK
  HY (HK) IC LIMITED China (Mainland)
Contact: Ms. Julie Chen   MSN:julie_ic@hotmail.com Tel: 86-755-82535765 Fax: 86-755-82535755
MC1439G MOT CAN 10+ 209 NEW AND STOCK
  Rong Chuang Xin (HK) Co.,Ltd. China (Mainland)
Contact: Mr. Michelle   MSN:michelle__2011@hotmail.com Tel: 86-755-83041462 Fax: 86-755-82501483
MC1439G MOT CAN 358
  Majestic Trading Development Co., Ltd China (Mainland)
Contact: Ms. Ivy Tian   MSN:Ivy08@live.cn Tel: 86-755-8300 2395 Fax: 86-755-8300 2466
MC1439G MOT CAN 08+ 17
  Goldenway Electronic Limited Company Hong Kong
Contact: Ms. sarah   Tel: 0086-755-82535329 Fax: 0086-755-
MC1439G MOT CAN 04+ 209
  SANHUI (HK) ELECTRONICS China (Mainland)
Contact: Ms. Simmy   MSN:simmy-sales@hotmail.com Tel: 86-755-83674455 Fax: 86-755-83690789
MC1439G MOTOROLA CAN 880 Scattered new
  HONGKONG BOXIANG TECHNOLOGY CO.,LIMITED China (Mainland)
Contact: Mr. chen   MSN:mars_chen16913@hotmail.com Tel: 86-755-82522455 Fax: 86-755-83511618
MC1439G MOT CAN 04+ 5303 Welcome to order!
  HongKong Boris Electronic Technology LIMITED Hong Kong
Contact: Ms. BOY   MSN:boris-ic@hotmail.com Tel: 086-0755-61667007 Fax: 086-0755-82539753
MC1439G ON CAN 10+ 12000 HOT & New and Origina
  HHS Technology Co.,Ltd China (Mainland)
Contact: Ms. Jane Zhang   MSN:cheerjane@hotmail.com Tel: 86-755-83970132 Fax: 86-755-83953764
MC1439G MOTOROLA CAN8 1500
  NamFung Groups(HK) Electronics Limited Hong Kong
Contact: Mr. Andy Wong   MSN:namfung808@hotmail.com Tel: 86-755-33061456/33062456 Fax: 86-755-33062567
MC1439G 116
  Aslan Internatinal Trade Co., Limited China (Mainland)
Contact: Mr. David King   MSN:Aslan0908@live.com Tel: 86-754-84439661 Fax: 86-754-84439661
MC1439G MOT CAN 07+ 637 hot sale
  Overseas Electronics Development Co., Limited  China (Mainland)
Contact: Ms. Chaney   MSN:Chaney.oedcl@hotmail.com Tel: 0086-755-82078820 Fax: 0086-755-82078920
MC1439G MOT CAN 10+ 1395 the stock, low price and good quality
  HONGKONG DAZELONG ELECTRONIC CO.,LTD China (Mainland)
Contact: Mr. dazelong   MSN:dazelong168@hotmail.com Tel: 86-0755-33169368 Fax: 86-0755-25895819
MC1439G MOTOROLA N/A 903 CAN8
  BONASE(HK) ELECTRONICS CO., LIMITED COMPANY Hong Kong
Contact: Mr. Vincent   MSN:bonasehong@hotmail.com Tel: 0755-8257-9312 Fax: 0755-8323-9040
MC1439G MOT 44
  Dong Yu yuan Electronic Limited China (Mainland)
Contact: Mr. Yang   MSN:Stevenyoung0012@hotmail.com Tel: 86-754-84471271 Skype:dongyuyuan2008 Fax: 86-754-84471271 ACCEPT SMALL ORDER
MC1439G MOT CAN 01+ 1555
  ICWINDOWS ELECTRONICS HK CO.,LIMITED China (Mainland)
Contact: Mr. Evan   MSN:Evan@icwindows.net Tel: 86-0755-83754011 Fax: 86-0755-83754009
MC1439G MOT CAN 01+ 1258
  Bocen (HK) Technology Co.,Ltd. Hong Kong
Contact: Ms. Sukey Zhu   MSN:sukeyzhu@live.cn Tel: 0086-755-82865885 Fax: 0086-755-82973863
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PDF / Datasheet

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