Electronics Engineering

49 mhz means 49 megahertz, which is a measure of frequency in waves. What this mean is that the wave form repeats itself 49,000,000 times each second.

A wireless charger is a device that transmits electric energy through magnetic (radio) waves.

The basic principle behind the function of the device is explained in either 6th or 8th grade physics: electrons traveling through electric wires or other conducting objects generate magnetic forces perpendicular to the flow of electric power and any magnetic field perpendicular to the wire generates electric energy in the wire. By twisting a wire into a coil, the magnetic field is then concentrated and focused, thus forming an inductive coil (a different name for electromagnet). by placing two of these coils next to each other, alternating current electric power is transferred from one coil to the other. Another place where this phenomenon is found is in the antennae when electric signal is transferred from one antenna to the other one (or more). The distance and efficiency of energy transfer depends on the shape of the antenna and wavelength (frequency) used.

This technology is used in TV and radio broadcast, cellphones, wi-fi, power transformers (big ones supplying power to homes and small ones in power bricks), etc, etc...

The wireless chargers are usually flat pad-looking devices (the power transmitting antenna) and can be used to charge most common portable devices like cellphones and mp3 players. The power receiving device would have to be modified (the power receiving antenna) or specifically designed to operate with a wireless charger. The wireless chargers usually operate in micro-wave frequency and therefore need to be in close proximity to the device being charged.

No semiconductor's do not obey ohm's laws.

Capacitors resist a change in voltage, proportional to capacitance and current. This is called capacitive reactance. As a result, a capacitor in an AC circuit will create a leading phase angle, current relative to voltage. This, for example, can be used to help start a motor by creating two magnetic fields, one leading the other.

1.5 ohms. Two 3 ohm resistors in parallel.

high bandwidth link has high quality content and it is large in size

It can be described with a finite number of steps.

Well... Maybe yes, maybe no. It depends on two things. First, the physical size of the non-polarized capacitor may well be larger than the original size of the polarized capacitor, so it might not fit. Second, you have to consider the RMS current rating of the capacitor. Often, a polarized capacitor, such as an electrolytic capacitor, is intended to be used in a power supply, and is rated for a certain RMS current. A non-polarized capacitor, however, might not be rated for the same or higher RMS current, so it would not be able to handle the load.

Budda Amplification was created in 1995.

Microcontroller have inbuilt memory, interrupts, etc. Which you will need to connect externally in microprocessor. Thus, Microcontroller is better than microprocessors

you need more information my way. you use 2 formula v=ir and p=i*i*r.

i=current

r=resistance

v=voltage

and

p=power (heat given out)

A: Neither these are fixed regulator and the lm140 is ancient. My choice for any regulator is LM117 since i can get 1.25 volts to over 30 volts with two resistor,

A buffer amplifier can be used to transform high input impedence to low output impedence, or vice-versa.

1. P = VI
2. P = (V=IR) * I
3. P = R* I * I
4. P = 12,000 * .008 * .008
5. P = 96*0.008
6. P = 0.768 Watts

Most dynamic microphones have a response from about 15Hz to 15 kHz, although they differ widely depending upon model.

Analog devices are machines and components that react or work in a linear manner, often with an ability to make a continuous change. For example, a volume knob on a radio could be an analog device because it controls audio power output over a continuous range.

Many amplifiers, power supplies, and radios use analog devices for generating or processing analog signals.

Digital devices are machines and components that are always found in one specific state or another, rather than in some range between two points. Many analog and digital systems are designed to simulate the best features found in the other type of system, e.g., analog controls on a digital CD player, or digital controls on an analog radio.

An inductor resists a change in current through the creation/destruction of the magnetic field around the inductor. In an IR Circuit, when the electromotive force (the battery voltage) changes, the inductor will create a voltage to oppose the change, causing the current flowing through the circuit to change gradually over time rather than instantaneously. In an ideal IR circuit, the induced voltage is initially equal and opposite to the change in electromotive force, and it decays exponentially, with a time constant proportional to the inductance of the circuit.

Philippine national police is the meaning of P.N.P

(4 coulombs / 2 seconds) = 2 coulombs per second = 2 Amperes.

3db frequency is the frequency at which the value in the graph is reduced by 3db level

It's also known as the half-power point.

There is no current flow through the galvanometer in a balanced Wheatstone bridge because, in the balanced state, the voltage on both terminals of the galvanometer is the same. Since the voltage differential in zero, there can be no current.

That would depend on your country.

I am sure that if you are from the US for example, you wouldn't want to see the phone bill for calling a mechanic in Australia.

You can find a mobile mechanic in a local telephone book or a local mechanic trade website.