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Blog entries by D.A.(Tony)Stewart

D.A.(Tony)Stewart
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With power LED's mounted boards with adequate copper surface or aluminum surface area (~1 sq.in/Watt) cool emission of light can be adapted to almost any fixture with mindful avoidance of glare. I put these together one day for Winter Seasonal exterior lighting using surplus boards cut down to...
AND = Application Note Document (On Semi) DN = Design Note (On Semi) .pdf format These are all State of The ART LED's SMPS designs that may have started as University Grad Student/ Prof level designs, perfected by OnSemi and finally made their way into new chips with intelligent design...
Coding Spacing is commonly generally defined by the range between data transitions to prevent DC content of data. Bi-Phase which is self -clocking but reliable and used in early Telephony 1.544Mb/s repeaters then tri-level coding was used. Similar starts in ethernet coding were used. Magnetic...
Power measurement methods for RF **Peak** = instantaneous maximum read with storage memory ( digital or Analog )often measured with Log Amplifiers calibrated in dBm for 50 or 75 Ohms **Average** = time interval averaged over specified interval Both above are computed by voltage detection...
Design site has error in the design calculations for RMS >Peak. In the end the RMS voltage of the transformer should only be slightly more than the LDO Vdc if the optimal parts are selected. Assuming you want 5V,1A regulated choose LDO regulator with minimum drop otherwise 2.5V typical may...
Type Gold . . . . . . . . . Thickness Soft Bondable Gold 30 μin (0.76μ) Immersion Gold . . . 2-5 μin (0.05μ-0.125μ) Hard Gold . . . . . . . 31.5 μin (0.80μ) ENEPIG . . . . . . 1-2 μin (0.025μ-0.5μ)
Boost Regulator :bsdetector: :bsdetector: Bi-Colour Latch PWM analog clock :bsdetector: :bsdetector: DIY Garden Fence LED Light shades :bsdetector: Blue Pool LEDs coated in clear epoxy All diodes have a threshold voltage, Vth which is basically the voltage...

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