Can I test an unwired light fixture with multimeter?


That really isn't the intended use of TestFixture... If you don't want to use an if, why not just be explicit in your tests? You can use a TestCase for values you expect to pass a certain test.

[TestFixture] public class Tests { [TestCase("test1")] public void FooTest_One(String value) { Foo f = new Foo(value); Assert.IsTrue(f.TestOne()); Assert.IsFalse(f.TestTwo()); } [TestCase("test2")] public void FooTest_Two(String value) { Foo f = new Foo(value); Assert.IsTrue(f.TestTwo()); Assert.IsFalse(f.TestOne()); } }

Assuming you want to test more than two values, you can also add additional TestCase's for values that correspond to the expected behavior:

[TestCase("test1")] [TestCase("test1.1")] public void FooTest_One(String value) ... [TestCase("test2")] [TestCase("test2.1")] public void FooTest_Two(String value) ...

This gives you the added benefit of testing for the cases that are supposed to fail. I'm not sure if it matches your real...

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Welcome to the PF.

You might be able to hold the + probe up to one of the sparkplug wires (ground the - probe) and pick up enough ignition noise to give you a reading. Start by putting the meter on AC volts, and see how big the signal is. If it is a reasonable signal, try the Hz setting.

If that doesn't work, you could make a transformer to put the sparkplug wire through. Use a ferrite core that is big enough for the sparkplug wire and cap to fit through, and wind about 20 turns of insulated wire around the core. This will form a 1:20 transformer that you can connect your DVM leads to. You should get enough of a pickup voltage with the 1:20 transformer to be able to make your...

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Have the MM...can someone tell me how to test caps...(Wharf W60D's)...?

Pretty sure they will be out of spec, but Gang Tweeter suggested I test them with MM.........instruction on doing that ??

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How can we test IC using a multimeter ?


Multimeter can only be used to test the IC dc supply voltage and to use the ohm range to find out if the IC is shorted to ground or not. Generally using an oscilloscope to test an IC is much more accurate because one could see the input and the output signal assuming if the IC did not develop any short circuit and has the right DC SUPPLY input (VCC).

One also have to know that not all IC has input signal. Take oscillator IC like the common power IC found in switch mode power supply (UC3842) as an example. This type of IC produce it owns output waveform once the dc supply is present. This means it does not need an external input signal in order to produce the output signal.

Beside this, there are Microcontroller Unit (MCU), PIC, EEprom, FLASH Rom, Ram IC which require a specialize tester like programmer and Ram tester in order to check if they are good or bad.

Conclusion- One has to know what type...

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Using a Multimeter – Pages

A multimeter can be used for continuity testing. Continuity testing is done to check if there is a break in a wire or track on a circuit board (open circuit). Continuity testing can also check whether a wire or track is shorted to another wire or track (short circuit).

When the continuity function is used on a multimeter, the leads of the multimeter are placed on either end of a wire or track, the multimeter will make an audible sound if the wire or track is not broken, i.e. it is continuous. The multimeter acts as a buzzer circuit and the leads act as a switch. When the leads are touched together or on either ends of a conductor, the buzzer circuit is completed and the buzzer sounds.

The videos below show continuity testing on various items. A description of what is being done follows each video.

Basic Continuity Testing

Selecting the Continuity Function

To use the multimeter continuity function, switch...

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When testing to see whether a light fixture wire has gone bad, you should be careful (as in any time you work around electricity). Below you will find the steps you need to take to complete this test.

Step 1 - Disconnect the Power

For your safety, you will want to disconnect the power supply to the project area before you continue with the next steps.

Step 2 - Remove the Fixture Housing

In order to access the light fixture wire you need to test, you will need to remove the housing for the light fixture. Your light fixture will typically attach to your wall or ceiling with screws, which you will need to remove and set aside for later reassembly.

Step 3 - Test Resistance

Once you have removed the light fixture and exposed the ends of each wire, you will need to test them with your multimeter to see if there is resistance. Place the leads for the multimeter on the positive and negative light fixture wires. If the multimeter...

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