Electronics Engineering

AN INDIVIDUAL WHO TURNS ABSTRACTION INTO MALFUNCTION... AN INDIVIDUAL WHO TURNS ABSTRACTION INTO MALFUNCTION...

it is possible to modify a old AT psu as lead acid battery charger for 12 volt battery.it will work very good and cost effective.i am using this. in old type of power supplies there is a variable resister for voltage correction. you can trim it according to your need but in some cases it doesnt gives more than 13 volt.for this you replace it with a slightly higher value preset.you can incerese its voltage upto 16 volt.now you can place a automatic battery charger circuit with this available supply.due to high current drain the 12 volt rectifier diode may malfunction.ensure the proper cooling of psu.than means in built fan is enough but it should always working.ensure proper grounding to earth pin of main lead otherwise it will give you a shock although not fatal.

pulses? like in the pulses you heart makes us hear?

the energy required to break covalent bond in si is 1.1ev and in ge is 0.7ev

I = E/R or Current = Voltage/Resistance (Ohm's Law)

takim

The equation for such circuits is given by:

V=R*I +(1/C)*Integration(idt)

First of all digital signal cant be transmitted wirelessly. digital signal can only be transmitted through optical fibre in the form of pulses.

so we have to convert digital signal to analog form with the help of DIGITAL TO ANALOG CONVERTOR ( D TO A CONVERTOR). Then this analog signal should be super imposed on carrier signal called MODULATION. modem can be used for that. then that signal can be transmitted to the air through alloted band width like cellular system with the help of transceiver.

at the reciveing end we can demodulate the signal with the help of modem & can convert it back to digital form through A TO D CONVERTOR.

That depends on the specific microcontroller.

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i have lost my roll no in B.A part 1 so till me what to do i.

The basic operation of collision detection in Ethernet is to allow any station to send a packet whenever it is ready. This transmission is known as unslotted ALOHA.

Current cannot flow through an open circuit.

It measures the bandwidth, or amount of data, which a user has used. This is useful for companies which have limits to the amount of bandwidth they have sold, or who sell bandwidth at a price per gigabyte.

The anode voltage does not affect the sensitivity of a CRO. The input amplifier and deflection circuit have a greater influence.

The Anode voltage will affect the focus and visibility of the trace, in this respect it will affect how you see the result.

typically the output section

Answer 1: effective voltage is 0.707 * 115 = 81.3 voltage Answer 2 by xfrmrman: 115 VAC refers to rms voltage or effective voltage. VAC, rms and "effective" are all synonymous terms in this case. When you plug your appliance into 115 VAC, it is 115Vrms. The peak voltage, if the waveform is sinusoidal, will be 1.414 x the 115Vrms or the 115/.707 or ~163 volts. Note that the rms to peak factor is the square root of 2 and .707 is 1/square root of 2. This value was calculated for a sinusoid by manipulating udv - (integral of vu') (known as integration by parts) to find the root-mean squared value for heating. An RMS voltage measured across a resistive component can be translated into the rms (heating) current. The "3" in the expression above most likely indicates three-phase sinusoidal voltages (call them A,B, & C) which are represented as voltage vectors phased 120 degrees apart (draw arrows 120 apart originating at the center of a 360 degree circle. Connect the ends to make 3 triangles that when evenly subdivided will create two 60-30-90 (or 1,2 square root of 3 side length triangles) between phases. Each ray out will be the hypotenuse "2" side of the triangle, two "square root of three" length segments will be phase to phase. Divide everything by 2 to normalize the hypotenuse. This means line to line voltage is square root of three x line to neutral voltage. In the three phase case you can have the 115 VAC as your rms voltage and the same peak 163V measured from A to B, B to C, or C to A). However.... Usually the 115 Vrms or 120 Vrms is a broken out 3 phase line to neutral voltage from wye connected windings. The line to line voltage is 115 x square root of 3 or 200 V. For 120 volts, 120 x square root of 3 = 208V. Hence, we see a lot of 208 volt power in industry. Windings can also be connected start to finish for "Delta," but that's another topic.

KLM Airlines (Northwest) toll-free number is: 800-225-2525

From 88.5 to 107.9 MHz

Discrete variables have numbers that can be counted. Continuous data is measurable. Discrete data are data which can only take on a finite or countable number of values within a given range. Continuous data are data which can take on any value. It is measured rather than counted. The mass of a given sample of iron is continuous; the number of marbles in a bag is discrete.

the many things...

The so-called "Class-A" amplifier is the configuration with the least distortion.

Active stages are biased to operate within the linear portion of their characteristics,

and drive is controlled to avoid saturation or cutoff. Any remaining distortion is due

exclusively to unavoidable non-linearities in components.