• EEVblog #735 – Mailbag

    Another movie length Mailbag.
    What have people sent in this week?
    Forum: http://www.eevblog.com/forum/blog/eevblog-735-mailbag/

    Why are cheap Ebay LED light bulbs so bad? Dave investigates why some of them are doomed to fail. DaveCAD and thermal camera time.
    Datasheet for example LED

    CPM700 Countersurveillance unit from Research Electronics Inc for cold war spy bug sweeping.

    Cheap Ebay voltage sources for multimeter calibration

    Raspberry Pi I/O Hat Kickstarter, the Hatilogico:

    Industrial RS232 modem teardown
    Bricked Assus TF300 Transformer Tablet
    Belkin router teardown

    Cypress Parachute Automatic Activation Device.
    Previous video teardown on this

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