Fundamentals Friday
Dave explains what the ripple and noise specifications on a power supply is and how to measure it using different methods on both analog and digital oscilloscopes. From bad techniques through to good, showing the effect of each one. Traps for young players aplenty in this one.
How do you detect common mode noise issues and ensure that the signal you are measuring is really coming from your device under test?
Single ended & differential measurement, DIY coax solutions, termination, analog vs digital oscilloscopes, bandwidth limiting, and even oscilloscope probe coax construction issues. It's all here.
Mysteries of X1 oscilloscope probes revealed:
http://www.youtube.com/watch?v=OiAmER1OJh4
How to track down common mode noise:
http://www.youtube.com/watch?v=BFLZm4LbzQU
Opamp Noise voltage tutorial:
https://www.youtube.com/watch?v=Y0jkPLuFdnM
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https://www.youtube.com/watch?v=Edel3eduRj4
More mailbag
http://ros.org/wiki/Robots/TurtleBot
http://hacklace.org/
http://www.digilentinc.com/Products/Detail.cfm?Prod=ANALOG-DISCOVERY
Forum Topic: http://www.eevblog.com/forum/blog/eevblog-464-mailbag/
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https://www.youtube.com/watch?v=CYdjMBy0VsM
How much lab power supply can you get for $450?
Triple isolated outputs, PC control, 0.05% accuracy, is it too good to be true?
http://www.attenelectronics.com/Products/Power_Supply/Programmable_power/2012/0728/92.html
NOTE: Yes, it's a long review, and I spend most of the time complaining about something. I wasn't going to spend the time to try and edit it down. Complaints on a post card please.
Forum Topic: http://www.eevblog.com/forum/blog/eevblog-439-atten-pps3205t-3s-triple-output-power-supply-review
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https://www.youtube.com/watch?v=sR92IOU7XJM
Dave has a very quick look impromptu look at the Australian Square Kilometre Array (SKA) Phase Array Feed Prototype receiver
Photos: http://www.flickr.com/photos/eevblog/sets/72157636751123456/
Design of the Phase Array Feed:
http://www.atnf.csiro.au/projects/mira/tech_session3_SH.pdf
http://www.atnf.csiro.au/research/conferences/Parkes50th/RobertBraun.pdf
NOTE: This is most definitely not up to my usual standard for content or quality, so don't expect much, it is what it is.
Forum: http://www.eevblog.com/forum/blog/eevblog-537-square-kilometre-array-phase-array-feed-prototype/
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https://www.youtube.com/watch?v=VF3EnUzynhg
Dave shows how to do power supply MOSFET rail switching and demonstrates and discusses why supply sequencing might be needed.
Forum: http://www.eevblog.com/forum/blog/eevblog-995-power-supply-sequencing/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
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https://www.youtube.com/watch?v=pj9EJCKqiT4
The Sydney Mini Maker Faire is this Sunday, 24th November:
http://makerfairesydney.com/
Effortlessly uploaded by Eye-Fi ( http://www.eye.fi )
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https://www.youtube.com/watch?v=bFcgW4zsJZU
Dave assembles his first uCurrent in the SMD reflow oven.
With random running commentary while pick and place assembling.
Forum: http://www.eevblog.com/forum/blog/eevblog-562-more-smd-oven-reflow/
EEVblog Main Web Site:
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https://www.youtube.com/watch?v=JA-vi2iQ5vA