• EEVblog #555 – 555 Timer Kit


    Dave celebrates the classic 555 timer IC by building the Evil Mad Scientist “three fives” discrete timer kit.
    Some scope measurements and an explanation of the internal 555 timer circuitry follow.
    Video Highlights:
    Construction
    Testing
    Circuit Description
    Waveforms
    Classic old Signetics 555 timer datasheet
    The kit
    Han’s Book on Analog chip design
    Forum HERE

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