so-calledmos tubeActually it isfield effect transistorOne type, which belongs to the insulated gate type in field effect transistors. therefore,mos tubesometimes calledfield effect transistor. In general electronic circuits,mos tubeUsually used in amplifier circuits or switching circuits. Its scientific name is metal-oxide-semiconductorfield effect transistor, which is a structure formed by the superposition of metals, oxides and semiconductors.mos tubeIts working principle is that you only need to apply the required voltage to its voltage-controlled component to make it conduct. Its conduction is just like a transistor in a saturated state, with the smallest voltage drop across the conductive junction. This is what is often said to be a switching effect. Remove this control voltage and it will be cut off.

Somos tubeWhat is its main function?

1. For level conversion

When designing circuits, digital signal transmission is inevitable between different subsystems. The digital interface levels are often inconsistent between different systems or devices, so a level conversion circuit is required for specially integrated ICs to perform level conversion.

2. Used as a switch

As an electronic switch to control the on and off of the power supply, the positive electrode is generally Pmos tube, use N for the negative polemos tubecontrol.

3. For slow start

When there are large capacitive loads, such as electrolytic capacitors and high-power equipment power supplies (motors, motors, etc.), the power supply needs to be designed for slow start. Otherwise, there will be a large surge current, and the power supply voltage will drop, causing system reset, repeated restarts and other serious defects.

4. Anti-reverse connection

When designing the power interface, there are many occasions where the problem of reverse connection needs to be considered. Without corresponding circuit design, it is easy to burn out the circuit and cause losses.

5. Used for logic conversion

In addition to level conversion, signals often require level logic high and low conversion.mos tubeThis can be achieved with transistors.

at presentmos tubeIt is widely used in TV tuners (high frequency, small current) to switching power supplies (high voltage and large current). Nowadays, MOS and bipolar type (ordinary triode) are combined (IGBT, insulated gate bipolar transistor), and are widely used in high-power fields. Friends, do you understand all the above knowledge points?

Company phone number: +86-0755-83044319
Fax/FAX: +86-0755-83975897
Email: 1615456225@qq.com
QQ: 3518641314 Manager Li

QQ: 332496225 Manager Qiu

Address: Room 809, Building C, Zhantao Technology Building, No. 1079 Minzhi Avenue, Longhua New District, Shenzhen