Legacy Personal Blogs

Please Note:

This blog contains the legacy personal blog posts of our members, other than our Top Members whose content has been migrated into individual blogs in this area. Our new platform does not have personal blogs so this is how we have preserved the personal blog posts of our members from the Jive platform. No new posts will be permitted in this blog. Instead, if you wish to create blog content, please post it in the blog in the most appropriate topic area.

  • the future of broadcasting 2

    Andre-Schmeets
    from the future of broadcasting (1) as soon as the soft and hardware is available in a user friendly way.  So there is work to do in transforming ipods and iphones into personal radio and tv receivers while also creating bigger equivalents ...

  • Isn’t Watts (W) and VoltAmps (VA) the same?

    jhayden
                The “Volt-Ampere” is the measure of “apparent power” and is used primarily in circuits using alternating current (AC).  The Volt Ampere (VA) consists of 2 components, the first i...

  • Embest STM32F107 ARM Cortex-M3 Board - only US$150

    kennyxie
    The Embest STM32F107 ARM Cortex-M3 board is used the STMicroelectronic's ARM Cortex-M3 core based STM32F107VC microcontroller, working at up to 72MHz frequency, with 256KB Flash and 64KB RAM internal memory.   The board features a 2.4 inch ...

  • Embest SAM9G45 ARM9 Development Board

    kennyxie
    The SAM9G45 ARM9 Board produced by Embest is a full-featured evaluation board based on the ATMEL' new processor - AT91SAM9G45 which runs at up to 400MHz, with plenty of internal memories: 64KB ROM & 64KB SRAM, as well as many external memories: 2...

  • E14 personal blogs, and things that arrived in the post recently.

    e14 Contributor
    I'm just having a quick play with the E14 Personal Blog feature, as it's more interesting than clearing my work bench, and very few people are using it.  I think the last blog entry I posted was in 1996, regarding a bug in a popular codelock sys...

  • Do variances in an op-amp’s supply voltage affect the output?

    jhayden
                While op-amps are designed to reject noise and other disturbances in the supply rails, shifts in the supply voltage can affect the output of the op-amp.  Just how much the op-amp...

  • 4D systems Display

    e14 Contributor
    Hi Anybody with experience on this one? I have now tried "everything" to get this display working. Graphic Composer software worke, I can create files, load the serial file onto the SD card. BUT; when I slide the SD into the display, connec...

  • Hello, World!

    e14 Contributor
    So I finally made it to the blogosphere! not really sure how much time I will have to dedicate to this but hopefully it will serve as a platform from which I can launch my world-domineering plans! (Evil Laugh) Seriously though, I intend to use t...

  • The future of broadcasting

    Andre-Schmeets
    While music and video over the internet is getting common nowadays ceo's and program managers at broadcast organisations and companies are having their neck massaged on a daily basis now because they feel something threatening is coming up and they a...

  • For Op-Amps, does the supply voltage need to stay at the maximum voltage listed?

    jhayden
         Many op-amps can work off of a range of voltages; however, some characteristics of the op-amp may behave differently at different supply voltages.  Check the manufacture’s datasheet for details on the working specificati...

  • Selection Guide for NXP LPC17xx Series Processors

    kennyxie
    NXP's LPC1700 series is the industry's highest performance Cortex-M3 based MCU series, operating at speeds up to 100 MHz and offering peripherals like Ethernet, USB 2.0 Host/OTG/Device, and CAN 2.0B.  The attached file will guide you to select t...

  • Atmel AT91SAM9G45 Microcontroller Datasheet

    kennyxie
    This article is forwarded from Atmel, it mainly describes the delighted features of the new Atmel AT91SAM9G45 ARM9 Microcontroller which is released by Atmel in December of 2009.  Atmel's SAM9G45 is a high-performance eMPU with the right periphe...

  • Patents or alternatives

    Andre-Schmeets
    Many years ago I was playing in a band when the guitarist had a mind-blowing new thing. The small stone phaser.  It was an effect-pedal you could connect between a guitar and amplifier. Switch it off and on by stepping on its footswitch and watc...

  • Is it important for a coax connector’s impedance to match the impedance of my cable?

    jhayden
    Having a coax connector that doesn’t match a coaxial cable’s characteristic impedance can lead to reflections, attenuation, and other signal problems.  Since many coaxial connectors come in 50 & 75 ohm versions, many manufactures list the RG...

  • Can I assume that a “Rail to Rail” Op-Amp will have this feature on both the input and output?

    jhayden
                Not necessarily!  Op-Amps can have the “Rail to Rail” feature on the input only, output only, or both.  Different circuit parameters can also affect just how close to the ra...

  • Update after a long time

    e14 Contributor
    I had a lot of work at school, so the robotic project was paused. Now there're winter holidays and I found some time to try the TMC222. This Chip is awesome. It was very easy to communikate to it because of I2C. Together with the Stepper bought at eb...

  • quick reminder

    Andre-Schmeets
    If you have to eat a live frog,it does not pay to sit and look at it for a very long time. If you have to eat two frogs, eat the ugliest one first !

  • you choose.  2 gram, 3 gram

    Andre-Schmeets
    During the last weeks at my former employer's company, not starting new projects any more, I have offered to help out at the technical service department, repairing all kind of so called professional audio equipment. It gave me a wonderful insight in...

  • Electrical Insulation - LED Aluminum PCB Dielectric

    e14 Contributor
    Common Al Core Circuit Board TestsThe purpose of this blog is to provide testing processes for the Aluminum PCB in regards to Electrical Insulation.  Visit our thermal management homepage for further aluminum mounted board specifications and sam...

  • Aluminum PCB Heat Transfer Basics for LED Applications

    e14 Contributor
    Basics of Heat TransferTo understand the heat transfer properties of thermal interface materials (TIMs) we need to understand the meaning of thermal conduction, convection and resistance.  The following is a sneak peak from Clemens Lasance's The...

  • Business trip to China

    e14 Contributor
    the flight was ok but the food was...

  • Passivecomponents

    venkateshas
    Types of  Resistors and Capacitors, Most stable and Least stable of Capacitors Dielectric types.Capacitors: Capacitor Family Tree, EIA Codes, Temperature Coefficient, Dielectric types.Resistors: Resistor Family Tree, E24 and E96 Values (Code), T...

  • NIDays 2009

    e14 Contributor
    Today I went to the NIDays Conference in London's Savoy Place, home to the IET and, while it wasn't completely relevant to my robotics project, I was quite surprised at how much I enjoyed it. It had a great venue (with great food!), was very well org...

  • What size backshell will fit by Combination D-Sub connector?

    jhayden
    Combination (or Hybrid) D-Subminiature connectors are made to standard d-sub sizes.  For the most part, standard d-sub backshells will fit a Combo-D.  ITT Cannon and Amphenol both have tables in their catalogs that give the shell sizes for ...

  • NXP LPC2478 ARM7S Board

    kennyxie
    For more details, please feel free to visit: http://www.embedinfo.com/en/list.asp?id=34. LPC2478 evaluation board is based on ARM7TDMI-S Core, running at up to 72MHz, with 512KB internal flash memory and 98KB SRAM, together with comprehensive ex...