6 pin JST06T-JWPF-VSLE Automotive Connector Waterproof Housing Plug

2.3.5 Detection of capacitance

To detect the capacitor with a digital multimeter, you can follow the following methods.

(1) Use a capacitor gear to directly detect the function of measurement capacitance with a capacitor gear. Its range is divided into 2000P, 20N, 200N, 2 μ, and 20μ. During the measurement, you can directly insert the discharged capacitor two pins directly into the CX jack on the table. After selecting the appropriate range, you can read the display data.

The 2000P gear should be measured at a capacitor of less than 2000PF; 20N gear, which is suitable for measurement between 2000PF and 20NF; 200N gear, the capacitance between 20NF to 200NF; The capacitance; 20 μst can measure the capacitors between 2 μF and 20 μF.

Experience proves that some models of the digital multimeter (such as DT890B+) have a large error when measured small capacitors below 50pf, and there is almost no reference value when measured the capacitors below 20pf. At this time, the small -value capacitance can be measured by the series method. The method is: find a capacitor about 220pf first, use a digital multimeter to test its actual capacity C1, and then consolidate the total capacity C2 with the small capacitor to be tested. The capacity of small capacitors to be tested. Use this method to measure the small capacity of 1 to 20pf is accurate.

(2) The use of resistance to detect testing has proved that the use of digital multimeter can also observe the charging process of capacitors, which is actually reflecting the change of charging voltage with discrete digital quantities. For the measurement rate of digital multimeter is n/s, during the charging process of observing the capacitance, you can see n's independent and increased reading in order per second. According to the display characteristics of the digital multimeter, the quality of the capacitance can be detected and the size of the electricity capacity can be detected. The following is a method of blocking the detection capacitor using digital multimeter, which is very practical for instruments that are not set up. This method is suitable for large -capacity capacitors that measure 0.1 to thousands of micro -methods.

(3) DC voltage voltage block detection capacitance with a digital meter ductal voltage is actually an indirect measurement method. This method can measure small capacitors from 220pf to 1 μF, and can accurately measure the size of the capacitor leakage current.

2.4.1 The role and classification of wires

The wires send the current into and exported electrical components, most of the wires are copper. The cross -sectional area of the wire used on the car determines that it allows the size of the current.

Each circuit on the car has its own circuit numbers, and each wire has its own color. The wire can be monochrome or stripes.

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