With many types of electric tester on the market, finding one that meets your requirements can be difficult. While some measure voltage and current with ease, others measure continuity and resistance. Circuit testers are just one type of electric tester that measures the flow of electricity in open-wire or electric circuits. More than that, they measure the absence and presence of voltage at any point on the circuit rs. Essentially, they tell you if a circuit is working or not.
Circuit testers are often employed when you need to test ground wires as well. As they do not require batteries, they are often the go-to choice for many operations. Also called a receptacle tester or an outlet tester, circuit testers consist of numerous parts, allowing them to function optimally. In a typical circuit tester, there are four main parts, all of which will be outlined in the following section.
Circuit Tester Parts
A two-lead circuit tester has two wires with a cylindrical metal screwdriver, rod, or probe at the terminal. This part is what is attached to an outlet, wire, or switch. The current flows through these metal leads to the light bulb and resistor within the assembly. Next, the resistance, neon light bulb, and the wires from the metal leads are encapsulated by a plastic insulated body.
Meanwhile, a resistor opposes the amount of current flow. In fact, using a tester without a resistor can be dangerous because the current flowing through the wires can break the neon light bulb or test lights. Typically, the resistor will be positioned in between the light bulb and the metal wires so that the high current cannot reach the test lamp.
Lastly, the test light is probably the most critical part of the circuit test. As such, test lights are the only indicator of a complete circuit. However, test lights necessitate a lot of current to light up the bulb. Therefore, testers equipped with light bulbs are more reliable.
How a Circuit Tester Works
Now that the different parts of a circuit tester have been covered, we must outline how circuit testers function. Though there are many different types of electric testers, the most relied upon are circuit testers. When a metal probe/tip is connected to a hot, ground wire, current flows from one lead to the other. This current flows through the resistor and the neon light bulb. If the test light’s bulb lights up, then this is a good indication that the circuit is in working condition.
As previously mentioned, testers are designed to provide different measurements and data about a circuit. The most common types include inductance testers, neon voltage testers, plug-in circuit analyzers, continuity testers, multimeters, solenoid voltage testers, and more. With so many testers to select from, ensuring you understand your operational requirements is paramount. More than that, finding a reputable distributor with top-quality circuit testers and their related parts is of the utmost importance.
Conclusion
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