23 May '15, 3am

What do you know about #inductors? Take this quiz to find out #engineering #testandmeasurement htt…

What do you know about #inductors? Take this quiz to find out #engineering #testandmeasurement htt…

For air-core inductors (no ferromagnetic materials), the correct answer to question 3 "A component's inductance depends on which of the following?" is indeed "h. All, except e." For inductors with ferromagnetic cores (including the inductor in the photo for question 3), answer h is true only for small currents. For large-enough currents, nonlinear core-saturation effects occur, and the correct answer is "i. All of the above, plus ambient magnetic fields, plus past history." For examples and discussion, look up ferromagnetism, hysteresis, "core saturation", "swinging choke", "saturable reactor", "fluxgate magnetometer", "magnetic core memory", "magnetic amplifier", ferroresonance, "ferroresonant transformer". If you connect the inductor pictured in question 3 up to a curve tracer, sweeping the current from zero to the maximum thermal limits will allow, you will see a nonlin...

Full article: http://www.eetimes.com/author.asp?section_id=36&doc_id=13...

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crystalstine.me 22 May '15, 11am

Hey there! It’s been quiet on the blog homestead this week – if you read yesterday’s post you’ll know I’ve been in the mid...

Huawei's Everything-Connected Game Plan | EE Ti...

eetimes.com 23 May '15, 4pm

SHENZHEN, China — As Chinese Internet companies like Tencent, Alibaba and Xiaomi bulldoze into the local consumer electron...