Ndezvipi zvinoshandiswa neMOSFETs?

MOSFETsdzinoshandiswa zvakanyanya. Ikozvino mamwe mahombe-akasanganiswa maseketi anoshandiswa MOSFET, iro basa rekutanga uye BJT transistor, ari kushandura uye kukwidziridza. Chaizvoizvo BJT triode inogona kushandiswa kwainogona kushandiswa, uye mune dzimwe nzvimbo kuita kuri nani pane matatu.

Kuwedzerwa kweMOSFET

MOSFET neBJT triode, kunyangwe ese ari maviri semiconductor amplifier mudziyo, asi akawanda mabhenefiti kupfuura matatu, senge yakakwira yekupinza kuramba, iyo siginecha sosi inenge isina ikozvino, iyo inobatsira kugadzikana kwechiratidzo chekuisa. Icho chishandiso chakanakira seyekupinza nhanho amplifier, uye zvakare ine zvakanakira yakaderera ruzha uye yakanaka kugadzikana kwekushisa. Inowanzo shandiswa sepreamplifier yeaudio amplification circuits. Nekudaro, nekuti iri voltage-inodzorwa ikozvino mudziyo, iyo yekudonha ikozvino inodzorwa nevoltage pakati pegedhi sosi, iyo yekuwedzera coefficient yeyakaderera-frequency transconductance kazhinji haina hombe, saka kugona kwekusimudzira kwakashata.

Kuchinja maitiro eMOSFET

MOSFET inoshandiswa sechinhu chemagetsi, nekuda kwekuvimba chete nepolyon conductivity, hapana yakaita seBJT triode nekuda kwechigadziko chezvino uye chekuchengetedza cheji, saka kukurumidza kuchinja kweMOSFET kunokurumidza kudarika triode, sechubhu inoshandura. inowanzoshandiswa kune yakakwirira-frequency yakakwirira-ikozvino zviitiko, sekuchinja magetsi anoshandiswa muMOSFET mune yakakwirira-frequency yakakwirira-ikozvino mamiriro ebasa. Kuenzaniswa neBJT triode switch, MOSFET switch inogona kushanda padiki voltages uye currents, uye zviri nyore kubatanidza pamasilicon wafers, saka anoshandiswa zvakanyanya mumaseketi makuru akabatanidzwa.

Ndedzipi dziviriro kana uchishandisaMOSFETs?

MaMOSFET akatetepa kupfuura matatu uye anogona kukuvadzwa nyore nekushandisa zvisina kunaka, saka kutarisisa kwakanyanya kunofanirwa kutorwa kana uchiashandisa.

(1) Izvo zvinodikanwa kusarudza yakakodzera mhando yeMOSFET kune akasiyana mashandisiro zviitiko.

(2) MOSFETs, kunyanya insulated-gedhi MOSFETs, ine yakakwira yekupinza impedance, uye inofanirwa kupfupikiswa kune yega electrode kana isiri kushandiswa kudzivirira kukuvadzwa kwechubhu nekuda kwegedhi inductance charge.

(3) Iyo gedhi sosi voltage yejunction MOSFETs haigone kudzoserwa kumashure, asi inogona kuchengetwa munzvimbo yakavhurika yedunhu.

(4) Kuti uchengetedze iyo yakakwira yekupinza impedance yeMOSFET, iyo chubhu inofanirwa kuchengetedzwa kubva kune hunyoro uye kuchengetwa yakaoma munzvimbo yekushandisa.

(5) Zvinhu zvakachajiswa (zvakadai sesimbi yesimbi, midziyo yekuyedza, nezvimwewo) zvakasangana neMOSFET zvinoda kudzikwa kuti zvisakuvare pachubhu. Kunyanya kana welding insulated gedhi MOSFET, zvinoenderana nekwakabva - gedhi rakateedzana kurongeka kwewelding, zvakanakisa weld mushure mekudzima simba. Simba resimbi yesimbi kusvika ku15 ~ 30W yakakodzera, nguva yekuvhara haifaniri kudarika 10 seconds.

(6) insulated gedhi MOSFET haigone kuyedzwa nemultimeter, inogona kungoyedzwa ne tester, uye chete mushure mekuwana kune tester kubvisa pfupi-circuit wiring ye electrode. Kana yabviswa, zvinodikanwa kupfupisa maelectrodes asati abviswa kudzivirira gedhi overhang.

(7) Paunenge uchishandisaMOSFETsine substrate inotungamira, iyo substrate inotungamira inofanira kunge yakabatana zvakanaka.