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  • Users: ambertch
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  1. ambertch

    I2C/SPI IC frequency counter

    I need a frequency counter that can operated from about 10mhz-300mhz, and I'd prefer it be an IC that supports a standard kind of 2 or 4 wire communication - I'd basically like it to operate as if it were an ADC. I tried googling and looking up stuff couldn't really find a part that fits the...
  2. ambertch

    Basic GPIB setup

    I have an HP3488a switching unit w/ 10-channel multiplexer. All I need it to do is automatically switch between channels at the rate of 10hz (I am sampling 10 different resistances, each at 1hz, with the same DMM). I do not have access to labview, Visual studio. So I suppose this means that I...
  3. ambertch

    need help with SMT layout

    Hi guys, This is my first SMT layout. I'm converting a through hole design so I've gotten the 1206 and SOIC variants of all possible components and have some questions (using Orcad): 1. What wire width should I use? 2. Any general tips for the routing? I played around with the layout for a bit...
  4. ambertch

    Need an SMT diode

    Hi, I'm converting a circuit to SMT design, and in looking for diodes (general purpose, for signal rectification) on digikey, I can't seem to find one in the 1206 2 terminal package, closest I can find is a SOT-23 3 terminal package. Digikey lists a lot of packages that I'm not familiar with...
  5. ambertch

    high gloss coatings for carbon fiber?

    Hi all, I'm just wondering what material is usually used for a high gloss piece of carbon fiber say for presentation purposes. varnish? sanded epoxy? Thanks, Ambert

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