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Continuity and short-finding

DC circuits · Intermediate · about 15 minutes · part of Electronics Technician

With the power off, the ohms range finds opens and shorts. This board is a chain of five resistors; one of them reads almost zero because a solder bridge has shorted it. Measure each part in turn and compare with its marking.

Continuity and short-finding: the circuit on the simulator's bench

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How it works

A good part reads its marked value (within its tolerance). Near 0 Ω across a resistor means something is shorting it out; OL means it, or a joint, is open. End to end the chain should read 1 k + 2.2 k + 3.3 k + 4.7 k + 1.5 k = 12.7 kΩ.

Try it on the bench

  1. Drag the meter leads along the chain yourself.

Parts on the bench

In the course

Electronics Technician, module “Measuring and safety”.

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