Fire test Fire test is a common method for checking circuit faults. Its features are quick and easy. It is through the terminal short-circuit to the body, or the wiring and terminal contact test to observe whether there is a spark, determine the current supply and open. Note that improper use of the fire test will damage the electrical equipment. The test fire method is generally only applicable to circuit inspection under the condition of independent power supply of the battery. When using it, it must be pulled out within a short time. Check with a little copper wire and must not be used continuously for a long time. It is forbidden to use the fire test method in circuits or alternators equipped with electronic components. Otherwise, electronic components or rectifiers will be burned due to excessive current. Inspection inspection Inspection and inspection is a method for accurately diagnosing faults by testing various parameters of circuit components through instruments, meters, and gauges, and comparing them with normal technical parameters. The commonly used instruments for inspection and inspection are multimeters. 1, voltage detection check According to the current form of the circuit under test, the multimeter is placed in DC voltage range or AC voltage range to form a DC voltmeter or AC voltmeter and connected between the measured point and the ground. The measurement of the circuit voltage is used to determine the electrical components. Function and circuit connection are normal. If you don't have a meter at hand, you can use a test light instead of an experiment. Touch the test light to the output of the generator and the battery and pass the light intensity of the test lamp to determine the current condition of the generator and the battery. 2, resistance inspection Disconnect the circuit under test, place the multimeter in ohm file to construct an ohmmeter, and connect the two ends of the circuit under test to determine whether there is any open or short circuit fault in the device under test or the wire. 3, current detection check A typical multimeter can only measure DC current. During the test, the circuit to be tested is disconnected, the current meter is connected in series to the circuit under test, and the current of the circuit is detected to determine whether the performance of the circuit element and the wire connection are good.
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