3 Me Did As
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View 3 Me Did As as PDF for free.
More details
- Words: 150
- Pages: 2
Valor ac Sinal periódico qualquer
Valor médio zero
v(t) = VDC + vac (t) 2 Vac = Vef2 − VDC
Num período: (Vef )2 / R = (VDC )2 / R + Pac Valor eficaz de vac(t)
2 + Vac2 (Vef )2 / R =(VDC )2 / R+(Vac )2 / R ⇒ Vef = VDC
Exemplo: vac(t) V/2 v(t)
-V/2
V VDC
Vef =
+ V/2
V2 V Vef = = 2 2
Vac =
V2 V = 4 2
VDC
V = 2
V2 V2 + 4 4
V V2 = 2 = 4 2
Valor ac Exemplo: Calcule o valor AC do seguinte sinal:
100V Vef = Vmax / 2
Vac = V − V 2 ef
2 DC
2 2 Vmax Vmax = − 2 4 π
= Vmax
1 1 − 4 π2
= 100 × 0,3856 = 38,56V
Exercício: idem ao Exemplo para onda completa
Valor médio zero
v(t) = VDC + vac (t) 2 Vac = Vef2 − VDC
Num período: (Vef )2 / R = (VDC )2 / R + Pac Valor eficaz de vac(t)
2 + Vac2 (Vef )2 / R =(VDC )2 / R+(Vac )2 / R ⇒ Vef = VDC
Exemplo: vac(t) V/2 v(t)
-V/2
V VDC
Vef =
+ V/2
V2 V Vef = = 2 2
Vac =
V2 V = 4 2
VDC
V = 2
V2 V2 + 4 4
V V2 = 2 = 4 2
Valor ac Exemplo: Calcule o valor AC do seguinte sinal:
100V Vef = Vmax / 2
Vac = V − V 2 ef
2 DC
2 2 Vmax Vmax = − 2 4 π
= Vmax
1 1 − 4 π2
= 100 × 0,3856 = 38,56V
Exercício: idem ao Exemplo para onda completa
Related Documents
3 Me Did As
April 2020 5
Me Did Or Des Tress
November 2019 1
Did
July 2020 11
Me Tag As
November 2019 8
Iso Me Tri As
April 2020 7