/u/englishtube's posts in /r/AskElectronics

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If a zener diode(5V) stabilizes at 5V, why do we use a voltage regulator?

32 upvotes

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Why is impedance represented as a complex number instead of a vector?

29 upvotes

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Why does voltage leads or lags current by 90 degree in inductor and capacitor respectively, why not 85 degree for example?

27 upvotes

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What will be the current flowing through the zener diode when the load fails?

19 upvotes

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If there is only one capacitor in an AC circuit, does the current shift 90 degrees regardless of the capacitance value?

2 upvotes

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On a chip, between GND and the pins, when I measure each pin individually in multimeter diode mode, if I see a value around 600-700mV, does this mean that the chip is undamaged?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If a zener diode(5V) stabilizes at 5V, why do we use a voltage regulator?	32
Why is impedance represented as a complex number instead of a vector?	29
Why does voltage leads or lags current by 90 degree in inductor and capacitor respectively, why not 85 degree for example?	27
What will be the current flowing through the zener diode when the load fails?	19
If there is only one capacitor in an AC circuit, does the current shift 90 degrees regardless of the capacitance value?	2
On a chip, between GND and the pins, when I measure each pin individually in multimeter diode mode, if I see a value around 600-700mV, does this mean that the chip is undamaged?	1