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CEPD News
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(303) 415-1112
May, 2016 - Vol 9, Issue 4
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IEEE High Plains Meeting
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Building the Keck Telescope
Arne Haas will present his work as part of
the team that built the Keck Telescopes.
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IEEE Denver Dine and Learn
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Advances in distributed control of distribution-level energy resources
by Dr. Emiliano Dall'Anese of NREL
The power system is gradually evolving towards a massively distributed infrastructure with thousands of controllable end-points. The talk will focus on distribution systems with high integration of photovoltaic (PV) systems and finally how distributed control strategies recently developed by NREL enable voltage regulation and power-quality control, while continuously driving the system operation towards economically-optimal targets.
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Surface-Mount Resistor Ratings
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When looking to save space, it might be tempting to throw down a 0201 resistor, but before making this a part of the design, be certain it won't blow up! Although there are numerous options when it comes to surface-mount parts, the physical sizes of these devices influence factors other than just power. Resistors have voltage limits, and there might be a good reason there are 1206 parts on your voltage rails.
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size (US)
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power W
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Operating V
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201
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0.050
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25
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402
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0.063
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50
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603
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0.100
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75
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805
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0.125
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150
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1206
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0.250
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200
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1210
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0.333
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200
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2010
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0.750
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200
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2512
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1.000
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250
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TH CMF60
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1.000
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500
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Typical Resistor Specifications
Notice that if you need to be operating with 300V across your resistor, even a 2512 may not get you there. In that case it might be better to switch to a through hole component, such as the CMF60 1W package. -NM, DF
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Services
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We provide cost effective and expedient design options for our clients, regardless of the project's complexity. Our detailed proposals, accurate estimates and time schedules will help you manage each phase of the project.
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Sincerely,
The Staff of CEPD, Inc.
© 2016, CEPD, Inc.
303 415-1112 Fax 720 306-4445
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