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On **, I can see clearly.
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Patches? The resistance of 150 will not be 15,. I guess it's an inductor, 15uh
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To this resistor to dig treasure online to buy one, it doesn't take a few dollars, in general electrical appliances, the resistance of this resistance value is not easy to encounter, this.
The resistance value is too small.
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You need to find a professional who specializes in selling this resistor to help you look at it. Ordinary ones are fine, if it is a power resistor, it is not necessarily, it depends on what the function of the application is.
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If there is a problem, it will be burned less and the cause will be found.
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A resistor is composed of three parts: a resistor body, a skeleton and an outlet (the resistor body and the skeleton of a solid resistor are combined into one), and it is only the resistor that determines the resistance. For resistive bodies with uniform cross-sections, the resistance value is r
The resistor should be checked before use, and the performance of the resistor should be checked to check whether the actual resistance value is consistent with the nominal value, and whether the error is within the allowable range. The method is to measure with the resistance level of the multimeter.
There are two things to pay attention to when measuring resistors.
1. The range should be determined according to the measured resistance value, so that the pointer indicates in the middle of the scale mark, so that it is easy to observe.
2. After determining the range of the resistance file, the method is to carry out zeroing, the method is a short circuit (direct collision) between the two meter pens, adjust the "zeroing" electrical appliance to make the pointer accurately point to the "0" of the scale mark, and then measure the resistance value of the resistance. In addition, it is also important to take care that the human hand does not touch the ends of the resistor or the metal part of the watch pen. Failure to do so will result in test errors.
The resistance value measured with a multimeter is close to the nominal value. It can be considered that basically the quality is good, if there is too much difference or no work at all, it is bad.
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The color ring of the resistor is not clear, but you can see it clearly, and it is not difficult to check how big it is.
But these hands are still very clear, the hands of the working people.
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You are a high-precision resistor with a 5-color ring, how many euros, you only need to find a book to compare it, it's very simple.
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4701 indicates power, size, quantity, length and width. 0603=1/20w.Length = Width = 1005 = 1 16 or 1 20WLength = Width =
1608 = 1 10w, length = width =
2012 = 1 8 or 1 10w, length = width =
3216 = 1 4 or 1 6w, length = width =
3225 = 1 4w, length = width =
5025 = 1 2w, length = width =
6332=1w, length=width=
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4701 is equivalent to 4 color ring resistance (that is, metal film resistance), its accuracy (deviation) is 1%, and the resistance value is 4701 = 470 * 10 to the power of 1 = 470 * 10 = 4700 =
Therefore, 4701 means that the resistance is a metal film resistance, and the resistance value is.
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Answer: 82 10 0=82 ( ) This way of expressing is as follows: the first two numbers are the actual first two numbers, and the third number is the number of the first two numbers followed by the number of zeros, in ohms. 820 is 82 followed by 0 zeros.
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820 ohms, ohm units can be omitted without writing, kiloohms, megaohms can not be omitted.
I read the answer above and felt that there was a problem. If the label on the chip resistor is "820", then as answered above, it is indeed 82 ohms, if the "821" written on the chip resistor is 820 ohms. The silk-screen character "820" on the PCB is obviously a pin resistor, as long as people with a little electronic knowledge know that it is 820 ohms, there is no need to argue.
In electronic engineering, the "ohm" unit on the schematic of the circuit can also be omitted, while k ohms and m ohms cannot be omitted.
As for what you said, "And the few resistors on the side that say 100U, how do you understand that?? In fact, the capacitance of the electrolytic capacitor next to it is 100uf, not a resistor.
The first thing to do is to determine whether it is on-grid or off-grid. In addition to the configuration of the inverter, it should be determined according to the technical indicators of the entire photovoltaic power generation system and refer to the product sample manual provided by the manufacturer. Generally, the following technical indicators should be considered. >>>More