Electronics - Testing and Troubleshooting - Discussion


A +5 V PCB power source that has been "pulled down" to a +3.4 V level may be due to:

[A]. a circuit open
[B]. a faulty regulator
[C]. the half-split method
[D]. a circuit short

Answer: Option D


No answer description available for this question.

Priya said: (Jun 3, 2012)  
If a circuit is shorted, then ideally, current and voltage should be infinite and zero respectively. But in practical, the voltage value gets reduced.

Rajan said: (Apr 14, 2016)  
It depends on the type of shorts. If high current source shorted with zero ohms most like it will burn the trace but with lower ohm shorts it may just lower the voltage.

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