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  • sparkgaptime commented on saftari's instructable Use Your Laptop as Oscilloscope2 years ago
    Use Your Laptop as Oscilloscope

    you have 2 of the diodes not in their correct polarity, back to back diodes will work as long as ratings are not exceeded, however this diagram will cause a short and could damage an already very poor person's personal computer!! This is totally unacceptable. Back to back diodes is usually implying one forward biased diode in series with one (respectively) reverse-biased diode(usually identical diode model).

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