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  • EEVblog #607 – Agilent B2912A Source Measure Unit SMU Teardown

    Posted on April 24th, 2014 EEVblog 4 comments

    What’s inside a $13K Agilent Source Measure Unit capable of 15fA and 100nV resolution?
    Plus triaxial cables, and low current measurement connection.
    Data Sheet
    Connection Guide
    Component Datasheets:
    FDS8978 Dual MOSFET
    OPA1611 Audio Opamp
    ISO7240A Isolators
    ADS8202 Diff Amp
    ADS1675 24bit ADC
    30N06 MOSFET

    Forum HERE

    High Resolution Teardown Photos:

  • EEVblog #606 – Mailbag

    Posted on April 22nd, 2014 EEVblog 12 comments

    Dave flips the bird.
    A 1970′s Mattel car racing game.
    Sex on a stick multimeter probes.
    Sagan, Mrs EEVblog, and a whole lot more in today’s Mailbag Monday

    Bob Widlar poster
    Easy EDA
    Channel Engineer on Youtube
    We Make Things
    Forum HERE

  • EEVblog #605 – Fig.8 & Cardioid Microphone Patterns

    Posted on April 20th, 2014 EEVblog 7 comments

    Doug Ford, former head designer from Rode Microphones continues with Part 2 of the microphone technology series by explaining the construction of noise cancelling Figure 8, cardioid, and hyper cardioid microphones. Also, how the polar patterns and responses relate to the physical construction, and how the frequency response is affected.
    Proximity boost effect,
    Microphone calibration is also discussed using a home made artificial voice speaker box.
    And practical considerations about foldback wedges used in stage performances and how to avoid feedback using proper microphone technique.
    And did Jimmy Barnes offer Doug a swig from his bottle of Vodka?
    Forum HERE

  • EEVblog Server Issues

    Posted on April 17th, 2014 EEVblog 8 comments

    The EEVblog dedicated server which hosts this site and the forum went down for most of today.
    It was not a fault of the server itself, but a major outage for all dedicated servers hosted with HostGater, the company I use that provides the server.
    Here is some info
    Sorry for the downtime but it was out of my control. All seems ok now.

  • EEVblog #604 – Sinclair C5 Restoration – Part 1

    Posted on April 17th, 2014 EEVblog 19 comments

    The obligatory “before” video showing Dave’s Sinclair C5 electric “car” and its poor condition before commencing restoration work.