Electronics Engineering

it 909 qr in nokia showroom , that is good price ........i think so

A: There is no formula it is a comparison of the zener diode voltage to the other input when one exceed the other the comparator will change state on the output and decreasing will return to the previous state

It is safer and isolated easier , but it needs to be boosted along its route .

A: A coil does store energy and this energy will be released after the current is removed is evident by a reversal of voltage across it before it collapse finally with less and less voltage

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Using a volt meter to ground, you would see the supply potential coil voltage on the coil end, if the return wire from the coil was open.

RS422 and RS485 and the now popular USB

It's entirely possible to use four 70W speakers with a 150W amplifier but the method will depend on the speakers and the amplifier specification. We will assume that the amplifier will deliver up to 150W per channel, so two speakers will be used on each channel.

If the amplifier is rated to drive a 4 ohm load, then two 8 ohm speakers can be wired in parallel and connected. In this instance, take care NOT to drive the amplifier too hard. It will overdrive the speakers at about the same time that it will begin to show a distorted output. This is a condition that can easily damage speakers so be very conservative with the volume control.

If the speakers are 4 ohm speakers, they can be wired in series to provide a total impedance of 8 ohms. If the amplifier is rated to deliver 150W into 4 ohms, then the total power to the speakers will be lower than to a single speaker. The benefit is that no speaker can be over-driven and there is a good amount of headroom for safety.

It has to do with the fact that what's being plotted isn't a simple function, y = f(x), on an x-y grid, but rather a set of parametric equations plotted on a f(t)-g(t) grid where:

x = f(t) is your input, and

y = g(t) is your output.

Specifically, for the differentiator:

x = f(t)

y = df/dt.

For the integrator:

x = f(t)

y = ∫ f(t) dt.

So, if your input is x = f(t) = sin(t), then your two outputs will be df/dt = cos(t) and ∫ sin(t) dt = -cos(t). That means your coordinate axes for the differentiator and the integrator will be the parametric equations x = sin(t), y = cos(t) and x = sin(t), y = -cos(t), respectively. I don't know if you've ever worked with parametric equations before, but suffice it to say, both of those sets of equations are parametric equations for a circle. I'll add a link to parametric equations below if you want to learn more.

William Crookes invented cathode ray tubes.
The earliest version of the CRT was invented by the German physicist Ferdinand Braun in 1897.

Because of transfer functions and the response of the scope

A: In mathematics it is learned that any part,number, items,are equal to zero if mulitplied by zero

Circuit patterns are the collections of transistors, capacitors, and associated components and their interconnections.

I have two Different Signals, I would like to find the RMS Error Between them, and Mathematically derive how the signals differ from each other.

I would like to find the RMS Error for the two Signals. Please Help.

Thanks in Advance.

A: This is term used to describe a filter that has wide or a big range of frequency available to pass trough. There are others name to describe other ranges of frequency like low pass, hi pass, narrow pass.

the reason one needs to remove metal from one's hands(including fingers or wrist area) is that a circuit can be made if the metal comes in contact with the circuit parts. if this happens, a circuit could be made through the jewelry and the jewelry would then be carrying voltage and/or current which of course, would be attached to the person wearing it! This would be a short circuit causing damage to the circuit, and also to the person wearing the jewelry...so watch out!

A: Is the same as low frequency except it becomes a predominant factor.

It is a decade counter with a binary to decimal translator meaning it can take binary and turn it into decimal numbers for example a seven segment display

how can i get 2203: electronic device and circuit question bank in B.E.-E.E.E. 2nd for Anna university chennai

Generally a larger diameter copper wire would create the least resistance to electron flow. Copper is the most conductive and is widely used.

In the ohms position that means an open circuit.

25 thousand volts

Ohm's Law describes the relationship between the voltage (potential difference) across the ends of some conductors and the resulting current through those conductors for variations in voltage. If the voltage is constant, then Ohm's Law is irrelevant.

Wow! That thing is worth at least $15,000 by now .... I auctioned one out months ago for $14,560 , very rare piece

It's Basic Project Of Transmitter & Receiver circuit

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Poly-chlorinated-biphenyls, it is a oil used in transformers to dissipate the heat from the coils of the transformer to the transformer's case. This helps in the transformers cooling. The only problem, it was found out after many years of use that it is toxic to the environment. Zero PCB's is the terminology used for the new transformer oils that are not PCB based.

In the forward direction the effective resistance of the diode is essentially zero. By Ohm's Law Voltage = Current x Zero. However, in a reversed bias situation there is typically a breakdown voltage that could destroy the device or in some cases cause a reverse current to flow as part of the circuit design.

Yes.