Dare you say you understand resistor

 The element of block up action removes to electric current between circuit, call resistor. Resistor needs as most electron circuitry some electronic component, widely known of it may be said, familiar to the ear can detailed. But who dare say to meet all resistance again, understand resistor all knowledge that?
The application is most component among electronic circuitry is not all sorts of norms, the resistor of all sorts of quality of a material. They are mostly cylindrical enclose a form, have thick have fine, sort is very rich and diversiform. Commonly used resistor sort has the carbolic film resistor, metallic film resistor, resistor that wind a string, cement resistor to wait for a few kinds big. Appearance of carbolic film resistor is hoar more, power limits from 1/4w- – 2w all has, its block is worth limits also from 1 Europe—-100 million Europe, but its thermal stability is poorer, precision is not tall, commonly used between general electron circuitry. Appearance of metallic film resistor is multi-purpose maize vivid baby blue serves as base color, appearance is done be handled by glair, look very smooth. The power of this kind of resistor and block value scope and carbolic film resistor are roughly identical, it is its only precision is taller, thermal stability is better, use extensively between taller to circuit stability demand circuitry, but the price slants relative to carbolic film resistor expensive. Carbolic film and metallic film resistor introduce 4 kinds of link more or its block is worth designation of means of 5 kinds of annulus size, of this kind of indicative method read take the electrical engineering person of the same trade with common method to be met, here no longer give uncecessary details.
Limits of power of the resistor that wind a string is in 3- – between 50W, silk of its use resistor is circled on porcelain qualitative base material make and become, its block is worth limits to be in 2 Europe—Between 10 1000 Europe, use in circuit of current limliting of big electric current more, its appearance is green more, much directer designation is in parameter on its appearance, begin of RX of its model appearance. Cement resistor is basic and as identical as the resistor that wind a string, just power is greater, be in more 5w above, it is multi-purpose wait in apply the brake of high-power specific power consumption electronic-controlled among circuit, its each parameter is direct also on indicative and outer casing, the appearance is a rectangle more, appearance shows white or hoar.
Resistor is in the action it may be said in electronic circuitry is varied, typically current limliting, step-down, cent pressing, voltage or voltaic sampling wait for no less than more than 10 kinds function. There still is the resistance of a few special functions among electronic circuitry in addition, for example:
/ negative temperature coefficient is pressed quick resistor, these two kinds are pressed quick the function that resistor uses in power source to input side to had risen to press protection. temperature coefficient is pressed quick resistor (English abbreviation PTC) it is blue more piece shape encloses a form, normal when block value approachs infinity, when voltage exceeds his to protect a movement to be worth, twinkling is moved assume direct position, constant paralell connection in power source two end are used, commonly used norms has 10D and 47D series to wait. And negative temperature coefficient is pressed quick resistor (English abbreviate NTC) characteristic as it happens and temperature coefficient is pressed quick resistor is contrary, it is black more piece shape encloses a form, its series connection is among power source loop, commonly used model has the series such as 5D;
Thermal resistor is commonly used among the loop that detecting to temperature, it is those who use resistor to change and change along with temperature is characteristic and those who make, the exterior encloses means for metallic cylinder form more, common PT100 is typical thermal resistor.
Besides afore-mentioned outside the resistor of two kinds of special purpose, still have Shi Min resistance, the resistor of a variety of types such as photosensitive resistor, their function each different, all use in different demand situation.
Mix to miniaturization as the electron now light quantified requirement, stick a type resistor to be used extensively in great quantities, this kind of resistor that sticks a type has volume small, the good point with high precision, but its block value tags method and lubricious annulus resistor somewhat difference, use and should add more advertent.
In development of technology of the following electron, the resistor of each different meets more function in succession emerge in large numbers, we have follow closely technology to develop way only, ability is understood truly and understand the relevant knowledge of resistor.

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