"osillograafilt" - 1 õppematerjal

Labor 2 Signaalide mõõteseadmed

Ua=±[0,6+0,1(200/132,4-1])*132,4*10-3/100=0,862mV I=±[1+0,1(Ix/Ik-1])*Ik/100 kus Ix =2mA I=±[1+0,1(2/1,3214-1])*1,3214*10-3/100 =0,0139mA Z=[(Z/U*U)2+(Z/Ua *Ua)2+(Z/I *I)2] =[(1/I*U)2+(-1/I*Ua)2+(Uz/I2*I)2]= [(0,0348/0,0013214)2+(0,862/1,3214)2+(2,8276*0,0000139* /(0,0013214)2)2=34,65 Z=(2140±35) 4. Pinge ja voolu signaalide jälgimine ning nende vahelise faasi mõõtmine U=2,96V I=1,3211mA =283,15º 283,15º - 360 º =-76,45º Faasnihe: Nihe osillograafilt/periood osilograafilt*360 2/10*360=72 º I=±[1+0,1(2/1,3211-1])*0,0013211*/100 =0,00139mA U=±[0,6+0,1(20/2,96-1])*2,96/100=0,0348V =±(0,5+10-7*2000)=0,5002 º U=(2,96±0,04) V I=(1,3211±0,0014) mA =(-76,4500±0,5002) º r=Z*cos()=2140*cos(76,45)=501 x=Z*sin()=2140*sin(76,45)=2080 P=UIcos()=2,96*1,3211 cos(76,45)=0,916mW