How do you test for electrical connections in a circuit?

Question

Before I place the battery, I want to test if there's any electrical connections between three closely soldered connections.

How do I check if these three solder bumps have any electrical contact with each other?

Thanks in advance :)

So if I am right, you set the multimeter to OHM mode and test for connections. If there is a connection, there will be some resistance in x OHM, else it will be zero. Am I right?

Thanks guys/gals for the quick answer.

tallpaul: Er, I am not studying Electrical Engin. I faced this problem and was asked how to solve it. So what better way than to ask friendly people in Yahoo Answers :)

Answer 1

Yes, the ohms scale of a multimeter, and if it is not an autoranging meter, then select the lowest scale, which probably would be the 200 ohm scale. Note that, with the probes unconnected, you get something like dashes across the display, indicating high resistance. Then short the probes tips. You should get a very low reading, some value less than 1 ohm. You should get the same value or only one or 2 tenths of an ohm more when you test across your solder joints. Probe the furthest points, putting the probes on the leads of the components that should be connected.

When you do this, you are measuring the electrical resistance of your connections to verify that current can flow freely. At the same time, you may also want to test for high resistance at a couple of points, in particular across the power input (be sure power source is not connected when you do this - never check resistance of a circuit that has voltage applied anywhere in it).

Answer 2

Use a Multi meter set to OHMs or to the buzzor sound. The buzzor will sound if there is connection and the ohm reading should be zero, if there are components between the soldering joints u should get these resistances.

Answer 3

With an ohm meter as u look at the points ,if they are connected the ohms should zero or very near that if there is little or no resistance u should read high ohms or infinity.

Answer 4

WIth a resistance meter also known as Ohm-meter, normally one function if a multimeter.

Are you sure you should be studying electrical engineering?

Answer 5

Use a multimeter. Multimeters have contact testing modes. In that mode any two touching connections will produce a beep.

Answer 6

hello
you need an ohm meter but you must use voltage part not ohm part. you need an electric cord. whit this and a battery(12v) and ohm meter in voltage part u can test your circuit.if you need more information send message to [e-mail]