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Posts Tagged ‘inductor’

Low power magnetic hold and release mechanism

Monday, March 23rd, 2015

This video by Shane Ormonde discusses the low power magnetic hold and release mechanism: With the inductor and magnet combined, ferrous metal objects can be held without any power indefinitely. To release the metal object the magnetic field holding it up needs to be temporarily cancelled out. This happens by pulsing current...

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Posted in how-to | 2 Comments »

Inductor saturation tester

Sunday, November 3rd, 2013

In relation to the previously posted Power inductor checker,  Lindsay refers us to Alan Yates' article on inductor saturation tester: As a result of recent work on switchmode power converters I needed the ability to measure the saturation properties of inductors. This simple instrument was built to allow visualisation of the current ramp...

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Posted in app notes | No Comments »

Power inductor checker

Wednesday, October 23rd, 2013

Drone refers us to this article from ELM-chaN:  Power inductor checker Here is a nice write-up on a home-brew power inductor checker for use with an oscilloscope. This device is useful for characterizing inductors from the junk-box, or pulls from dead PSU's. The Author says he's switching the tester at 50Hz. I...

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Posted in DIY | 5 Comments »

Eight Henry inductors from an old “tube” radio receiver

Tuesday, December 4th, 2012

Kenneth takes apart a few old "tube" radio receivers and finds 8 Henry inductors inside, which is several orders of magnitude more then regular inductors we're accustom to. He proceeds to hook it up to a 10 uF capacitor, and tests the ringing frequency of this LC circuit. This LC...

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Posted in Teardowns | 2 Comments »

Emicon-Fun inductor/capacitor lessons

Thursday, August 23rd, 2012

Riktw writes to inform us of a tutorial site covering the theory behind capacitors, and inductors, as well as noise suppression filters. The site is actually a blog, with new posts being posted every month or so. When looking for a small switching power supply module at the website of...

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Posted in tutorials | No Comments »

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