Electronics

Created : 2024-07-28 15:08

[[#Basics]]
[[#Energy]]
- [[#Flow of Energy]]
- [[#Resisters]]
  - [[#In Series]]
  - [[#In parallel]]
- [[#Voltage Divider Rule]]
Analog Circuits
Embedded Systems
Electronics Circuits

Basics

Energy

\begin{matrix} (1) & V_{r m s} = \frac{V p}{\sqrt{2}} \end{matrix}

accoring to equation 1 we can say that

V_{r m s} = 330 \times 0.707 = 231 V

Flow of Energy

There is a miss conception that the electrons flowing in the wire that carries the energy but in reality the Electric and Magnetic field that carries the energy.

\begin{matrix} (poyniting Theorem) & \vec{S} = \frac{1}{μ_{0}} \vec{E} \times \vec{B} \end{matrix}

It defines the power per unit area transmitted by an electromagnetic wave. The Poynting Vector ( $\vec{S}$ ) points in the direction of energy flow and its magnitude gives the rate of energy transfer per unit area perpendicular to the direction of propagation.

Resisters

Series

R = R_{1} + R_{2}

parallel

\frac{1}{R} = \frac{1}{R_{1}} + \frac{1}{R_{2}}

Voltage Divider Rule

Blank

If A Voltage source is connected in series with 2 resistors $R_{a}$ and $R_{b}$ then Voltage across the $R_{b}$ is

V_{R b} = \frac{R_{b}}{R_{a} + R_{b}} V i n

References

Poynting Vector

Usefull Links

http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/trangate.html