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Voltage problem of open circuit.

Hardware design
octubre 20, 2020 by Elliott 417

As shown:

I measured Vout to be 5V, and V4 was deliberately disconnected, so it is an open circuit, but why is Vout not 8.2V?

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Lexi Publicado en October 20, 2020

Why do you think Vout is 8.2V, because V3=8.2v, and the circuit is open?

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Maggie Publicado en October 20, 2020

As a reminder, Vout is measured on the ground.

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Abby Publicado en October 20, 2020

Current does not flow through R1, so there is no voltage drop, so Vout to ground is V1's voltage of 5V.

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Gregory Publicado en October 20, 2020

The measured voltage value is relative. The reference here is the ground, so the ground terminal is 0 instead of the open terminal.

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