Sunday 12 June 2011

Practice Back-Probing

review of multimeter
First of all, i turned on my meter and set it to ohms. i then made sure that the probes were not touching each other and i got a reading (OL) this reading means that there is an open circuit.

reading ohms with wires connected
i set my multimeter to ohms and touched the two probes together. the reading i got was 0.4 ohms, this is the resistance in the circuit. this is quite a high recording from a multimeter, it should generally be around 0.2 or less.

practice back probing connectors
for this test i used a hard shell connector and gently probed a pin into the connector so it fits beside the wire and then i put my multimeter prong onto the pin, i then put my other multimeter prong through the other side of the connector and recorded the resistance. the reading i got was 0.5 ohms.
this was a good connection because it was a solid reading and the numbers weren't jumping up and down, also if i had a bad connection the resistance would be higher.

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