联系我们

联系电话 :

+86(755)82737801

传真 :

+86(755)82737801

企业QQ:

3005561739

企业微信:

18565608567

销售部门 :

wangsong@yunzhoukj.com

联系人:

渠先生

质量

网站首页 > 新闻> Fixed resistor selection

Fixed resistor selection

2016-11-27 20:29

2. Fixed resistor selection

There are many types of fixed resistors, and the choice of which material and structure of the resistor, the circuit should be based on the specific requirements of the application.


  (1) Nominal values of the selected resistors should be close to those calculated in the circuit design. General circuit using the allowable error of +5% to +10% of the resistors. Special circuits and precision instruments used in the resistors, should be allowed to use small precision resistor.


  (2) high-frequency circuit can not use wirewound resistors, should be used in distributed inductors and distributed capacitance of small non-wirewound resistors, such as carbon film resistors, metal film resistors and metal oxide film resistors.


  (3) small-signal high-gain amplifier circuit should be used low-noise resistors, such as metal film resistors, wirewound resistors, can not use the larger sound of synthetic carbon film resistors and organic solid resistors.


  (4) The rated resistance of the selected resistor should meet the requirements of the resistor in the circuit. The resistors used in larger power circuits can have a rated power that is more than twice the calculated value of the actual circuit power. Some require long-term work in the high temperature environment of the resistor, you can use metal oxide film resistors or wirewound resistors.


  (5) wire wound resistor current noise, power, high temperature, but larger. Common wirewound resistors are commonly used in low-frequency circuits or as current limiting resistors, voltage divider resistors and bleeder resistors. High-precision wirewound resistors used for resistance boxes, fixed attenuators and a variety of sophisticated electronic instruments.


  • NFC technology advantages

    NFC mobile phones have built-in NFC chips that form part of an RFID module that can be used as RFID passive tags - to pay for ...

  • The Model of the Domestic Resistor

    1.1.7 Nomenclature of Domestic Resistors Domestic resistor model consists of the following five components: RJ73 said precision metal...

  • The unit of capacitance

    1.2.3 The unit of capacitance The basic unit of capacitance is F (method [pull]). The actual capacitance of the device is usually very...

  • Application of electromagnetic relay in life

    What is the application of electromagnetic relay in life?Relays with 1, the automotive sector more common: start motor starting relay, hor...

电子元件制造商

跟着我们

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  0 1 2 3 4 5 6 7 8 9    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  0 1 2 3 4 5 6 7 8 9    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  0 1 2 3 4 5 6 7 8 9