Qhov sib thooj hloov NPN thiab PNP yuav txuas li cas, thiab qhov txawv li cas?

Ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov keyboards sib txawv, ntxiv rau qhov hloov ntawm ob-xaim, qhov tso zis sib txuas ntawm lub sensor thiab lub kaw lus (PLC) yuav tsum tau txiav txim siab ob qho tib si hauv kev xaiv engineering tsim thiab hauv kev siv installation. Feem ntau ntawm qhov sib thooj hloov qhov tso zis loops, txawm tias hom NPN lossis PNP hom, yog qhib-cov khoom tso tawm cov teeb liab (tshwj tsis yog hom AC), thiab muaj peb lub teeb liab tshaj plaws, uas yog (VCC; GND; Kuj tseem muaj {{2. }}wire OUT (NO+NC).

  

Ua ntej, NPN hom, PNP hom tso zis kab txhais cov ntsiab lus

Ua ntej tshaj plaws, peb piav qhia lub ntsiab lus lossis lub npe ntawm peb lub teeb liab kab:

VCC: Nws yog lub hwj huam mov, tseem hu ua +V; (Feem ntau hu ua qhov zoo electrode ntawm lub hwj huam mov, txuas nrog cov kab liab lossis xim av).

GND: av cable, tseem hu ua 0V. (feem ntau hu ua qhov tsis zoo electrode ntawm lub hwj huam mov, txuas nrog cov kab xiav).

OUT: Nws yog lub teeb liab tso zis kab, tseem hu ua lub load; (Txuas dub (los yog dawb) hlau).

Tom qab ntawd yooj yim piav qhia lub ntsiab lus ntawm NPN hom thiab PNP hom:

NPN hom: tuaj yeem raug xa mus rau N hom, N qhia tias qhov kawg ntawm lub teeb liab yog qhov tso tawm tsis zoo; Lub sab hauv hloov yog txuas nrog lub teeb liab davhlau ya nyob twg thiab qhov tsis zoo davhlau ya nyob twg.

PNP hom: tuaj yeem hu ua P hom, P qhia tias qhov kawg ntawm lub teeb liab yog qhov zoo voltage tso zis; Lub sab hauv hloov yog txuas nrog lub teeb liab davhlau ya nyob twg thiab qhov zoo davhlau ya nyob twg.

Nyob rau tib lub sijhawm, ob qho tib si muaj qhov sib txawv ntawm qhov sib txawv ntawm NO (ib txwm qhib) hom lossis NC (ib txwm kaw) hom, thiab tsuas yog xaiv NPN lossis PNP hom tso zis hauv kev xaiv tsis yog cov lus piav qhia dav dav.

Qhov thib ob, txoj hauv kev mus rau txoj kev hloov cov kab hluav taws xob

Qhov sib thooj hloov yog ib hom sensor, nws txoj kev sib txuas tsis yog ib daim ntawv, feem ntau yog hom peb-xaim; Hom ob-xaim yog qhov yooj yim, thiab lwm txoj kev sib txuas plaub-xaim kuj tseem ua raws li peb-xaim hauv paus. Qhov sib xyaw ua ke yog:

1. Ob-hlau sensor:

TSIS MUAJ (nquag qhib)

NC (nquag kaw)

Lus Cim: Ob txoj kab hluav taws xob muab faib ua AC (AC) thiab DC (DC)

2, peb hlau sensor:

NPN-NO (ib txwm qhib)

Npn-nc (nquag kaw hom)

PNP-NO (ib txwm qhib)

Pnp-nc (nquag kaw hom)

3, plaub-xaim sensor:

NPN (NO + NC) Nquag qhib + nquag kaw hom

PNP (NO + NC) nquag qhib + ib txwm kaw hom