Electronics Engineering

Quantitative

a ratio box is something to figure out stuff

In a chopper type amplifier the dc i/p voltage is converted into an ac voltage, amplified by an ac amplifier and then converted back into a dc voltage proportional to the original i/p signal

Zero out impedance and infinite internal resistance.

- Divya Naveenan

c in 89c51 stands for cmos..

s in 89s51 stands for system programming

system programming is way of burning your program into microcontroller chip...

just like we write a program in c language and then burn it into microcontroller.this in system programming is another way of burning your program into microcontroller....

what is resonant frequency

The Possibility exists this is a science-fiction device akin to the Sub-Space radio used on The televisin program Star Trek. The device (Neutroni ) was something akin to a long range but somewhat clandestine (SSB?) radiophone system. the device was(More than Plausible)

THE PARALLEL rlc CIRCUIT IS CALLED A REJECTOR CIRCUIT BECAUSE IT REJECTS DOWN THE CURRENT. THE REASON IS AT RESONANCE THE IMPEDENCE OF THE CAPACITOR BECOMES EQUAL TO THAT OF THE INDUCTOR SO NO CURRENT FLOWS. AT LOW FREQUENCY THE CAPACITIVE REACTANCE IS LOW SO ALL THE CURRENT FLOWS THROUGH THE INDUCTOR AND WHEN THE FREQUENCY IS HIGH ALL THE CURRENT WILL FLOW THROUGH THE CAPACITOR BECAUSE AT THAT POINT THE REACTANCE OF THE CAPACITOR IS LOW. SO WE OBTAIN A V-SHAPED GRAPH WITH THE PEAK OF V INDICATING THE REJECTION OF CURRENT.

Two, two, two. Or 22 times 102 ohms, or 2200 ohms, or 2.2K ohms, or just 2.2K, as in, "I've got a 2.2K resistor that needs replacing. It's a quarter watt."

Three red color bands indicate a resistor value of 2,200 ohms (2.2 kohms)

A logarithm is the exponent to which a number called a base is raised to become a different specific number. A common logarithm uses 10 as the base and a natural logarithm uses the number e (approximately 2.71828) as the base.

current flow is proportional to the voltage and inversly proportional to the resistance

The voltage drop along the slide wire of potentiometer can be controlled by adjusting the value of working current. The process of adjusting the working current so as to match the voltage drop across the portion of sliding wire against standard reference source is known as standardisation

integrator converts the quantised signal to saw tooth signal which then compared with the present signal and error signal is generated,and error signal is quantised and the process continues

By deciding to study so as to become an electronics engineer. Then you can learn how to design and fabricate integrated circuits.

Part of your course of study and practical experience training would be to learn how to use the appropriate hardware and software tools so as to be able to code and decode integrated circuits.

* Flexibility of deployment across various frequency bands with little needed modification to the air interface. * Averaging interferences from neighboring cells, by using different basic carrier permutations between users in different cells. * Interferences within the cell are averaged by using allocation with cyclic permutations. * Enables orthogonality in the uplink by synchronizing users in time and frequency. * Enables Single Frequency Network coverage, where coverage problem exists and gives excellent coverage. * Enables adaptive carrier allocation in multiplication of 23 carriers = nX23 carriers up to 1587 carriers (all data carriers). * Offers Frequency diversity by spreading the carriers all over the used spectrum. * Offers Time diversity by optional interleaving of carrier groups in time. * Using the cell capacity to the utmost by adaptively using the highest modulation a user can use, this is allowed by the gain added when less carriers are allocated (up to 18dB gain for 23 carrier allocation instead of 1587 carriers), therefore gaining in overall cell capacity.

To make a full subtractor, you need an XOR and a NAND gate.

Microphone gives ac output.

Microphone converts sound energy to electrical energy. Due to vibration of Carbon diaphragm the resistance varies so that the amplitude of current varies.

That is not entirely true. A microphone element produces a very small DC sine wave output, all of it above the zero line. It can be made to have an AC ouput if a circuit is added to do so, as an amplifier which provides the negative component. Thus, half (or sometimes less than half) of the sine wave will be below the zero line. Otherwise, circuitry may be integral to the mic.

Example: http://www.rane.com/pdf/old/mic1dat.pdf ( See the Phasing spec )

Radio, TV, subdivided Radio to CW ( code) AM, FM, stereo, etc.

The built in potential in a pn junction. Due to the difference in carrier concentration between the sides of a pn junction.

Diffusion potential increases with increase in doping levels.

The multiples of 16 are:

1 x 16 = 16

2 x 16 = 32

3 x 16 = 48

4 x 16 = 64

etc.

The first 1000 multiples of 16 are:

16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240, 256, 272, 288, 304, 320, 336, 352, 368, 384, 400, 416, 432, 448, 464, 480, 496, 512, 528, 544, 560, 576, 592, 608, 624, 640, 656, 672, 688, 704, 720, 736, 752, 768, 784, 800, 816, 832, 848, 864, 880, 896, 912, 928, 944, 960, 976, 992, 1008, 1024, 1040, 1056, 1072, 1088, 1104, 1120, 1136, 1152, 1168, 1184, 1200, 1216, 1232, 1248, 1264, 1280, 1296, 1312, 1328, 1344, 1360, 1376, 1392, 1408, 1424, 1440, 1456, 1472, 1488, 1504, 1520, 1536, 1552, 1568, 1584, 1600, 1616, 1632, 1648, 1664, 1680, 1696, 1712, 1728, 1744, 1760, 1776, 1792, 1808, 1824, 1840, 1856, 1872, 1888, 1904, 1920, 1936, 1952, 1968, 1984, 2000, 2016, 2032, 2048, 2064, 2080, 2096, 2112, 2128, 2144, 2160, 2176, 2192, 2208, 2224, 2240, 2256, 2272, 2288, 2304, 2320, 2336, 2352, 2368, 2384, 2400, 2416, 2432, 2448, 2464, 2480, 2496, 2512, 2528, 2544, 2560, 2576, 2592, 2608, 2624, 2640, 2656, 2672, 2688, 2704, 2720, 2736, 2752, 2768, 2784, 2800, 2816, 2832, 2848, 2864, 2880, 2896, 2912, 2928, 2944, 2960, 2976, 2992, 3008, 3024, 3040, 3056, 3072, 3088, 3104, 3120, 3136, 3152, 3168, 3184, 3200, 3216, 3232, 3248, 3264, 3280, 3296, 3312, 3328, 3344, 3360, 3376, 3392, 3408, 3424, 3440, 3456, 3472, 3488, 3504, 3520, 3536, 3552, 3568, 3584, 3600, 3616, 3632, 3648, 3664, 3680, 3696, 3712, 3728, 3744, 3760, 3776, 3792, 3808, 3824, 3840, 3856, 3872, 3888, 3904, 3920, 3936, 3952, 3968, 3984, 4000, 4016, 4032, 4048, 4064, 4080, 4096, 4112, 4128, 4144, 4160, 4176, 4192, 4208, 4224, 4240, 4256, 4272, 4288, 4304, 4320, 4336, 4352, 4368, 4384, 4400, 4416, 4432, 4448, 4464, 4480, 4496, 4512, 4528, 4544, 4560, 4576, 4592, 4608, 4624, 4640, 4656, 4672, 4688, 4704, 4720, 4736, 4752, 4768, 4784, 4800, 4816, 4832, 4848, 4864, 4880, 4896, 4912, 4928, 4944, 4960, 4976, 4992, 5008, 5024, 5040, 5056, 5072, 5088, 5104, 5120, 5136, 5152, 5168, 5184, 5200, 5216, 5232, 5248, 5264, 5280, 5296, 5312, 5328, 5344, 5360, 5376, 5392, 5408, 5424, 5440, 5456, 5472, 5488, 5504, 5520, 5536, 5552, 5568, 5584, 5600, 5616, 5632, 5648, 5664, 5680, 5696, 5712, 5728, 5744, 5760, 5776, 5792, 5808, 5824, 5840, 5856, 5872, 5888, 5904, 5920, 5936, 5952, 5968, 5984, 6000, 6016, 6032, 6048, 6064, 6080, 6096, 6112, 6128, 6144, 6160, 6176, 6192, 6208, 6224, 6240, 6256, 6272, 6288, 6304, 6320, 6336, 6352, 6368, 6384, 6400, 6416, 6432, 6448, 6464, 6480, 6496, 6512, 6528, 6544, 6560, 6576, 6592, 6608, 6624, 6640, 6656, 6672, 6688, 6704, 6720, 6736, 6752, 6768, 6784, 6800, 6816, 6832, 6848, 6864, 6880, 6896, 6912, 6928, 6944, 6960, 6976, 6992, 7008, 7024, 7040, 7056, 7072, 7088, 7104, 7120, 7136, 7152, 7168, 7184, 7200, 7216, 7232, 7248, 7264, 7280, 7296, 7312, 7328, 7344, 7360, 7376, 7392, 7408, 7424, 7440, 7456, 7472, 7488, 7504, 7520, 7536, 7552, 7568, 7584, 7600, 7616, 7632, 7648, 7664, 7680, 7696, 7712, 7728, 7744, 7760, 7776, 7792, 7808, 7824, 7840, 7856, 7872, 7888, 7904, 7920, 7936, 7952, 7968, 7984, 8000, 8016, 8032, 8048, 8064, 8080, 8096, 8112, 8128, 8144, 8160, 8176, 8192, 8208, 8224, 8240, 8256, 8272, 8288, 8304, 8320, 8336, 8352, 8368, 8384, 8400, 8416, 8432, 8448, 8464, 8480, 8496, 8512, 8528, 8544, 8560, 8576, 8592, 8608, 8624, 8640, 8656, 8672, 8688, 8704, 8720, 8736, 8752, 8768, 8784, 8800, 8816, 8832, 8848, 8864, 8880, 8896, 8912, 8928, 8944, 8960, 8976, 8992, 9008, 9024, 9040, 9056, 9072, 9088, 9104, 9120, 9136, 9152, 9168, 9184, 9200, 9216, 9232, 9248, 9264, 9280, 9296, 9312, 9328, 9344, 9360, 9376, 9392, 9408, 9424, 9440, 9456, 9472, 9488, 9504, 9520, 9536, 9552, 9568, 9584, 9600, 9616, 9632, 9648, 9664, 9680, 9696, 9712, 9728, 9744, 9760, 9776, 9792, 9808, 9824, 9840, 9856, 9872, 9888, 9904, 9920, 9936, 9952, 9968, 9984, 10000, 10016, 10032, 10048, 10064, 10080, 10096, 10112, 10128, 10144, 10160, 10176, 10192, 10208, 10224, 10240, 10256, 10272, 10288, 10304, 10320, 10336, 10352, 10368, 10384, 10400, 10416, 10432, 10448, 10464, 10480, 10496, 10512, 10528, 10544, 10560, 10576, 10592, 10608, 10624, 10640, 10656, 10672, 10688, 10704, 10720, 10736, 10752, 10768, 10784, 10800, 10816, 10832, 10848, 10864, 10880, 10896, 10912, 10928, 10944, 10960, 10976, 10992, 11008, 11024, 11040, 11056, 11072, 11088, 11104, 11120, 11136, 11152, 11168, 11184, 11200, 11216, 11232, 11248, 11264, 11280, 11296, 11312, 11328, 11344, 11360, 11376, 11392, 11408, 11424, 11440, 11456, 11472, 11488, 11504, 11520, 11536, 11552, 11568, 11584, 11600, 11616, 11632, 11648, 11664, 11680, 11696, 11712, 11728, 11744, 11760, 11776, 11792, 11808, 11824, 11840, 11856, 11872, 11888, 11904, 11920, 11936, 11952, 11968, 11984, 12000, 12016, 12032, 12048, 12064, 12080, 12096, 12112, 12128, 12144, 12160, 12176, 12192, 12208, 12224, 12240, 12256, 12272, 12288, 12304, 12320, 12336, 12352, 12368, 12384, 12400, 12416, 12432, 12448, 12464, 12480, 12496, 12512, 12528, 12544, 12560, 12576, 12592, 12608, 12624, 12640, 12656, 12672, 12688, 12704, 12720, 12736, 12752, 12768, 12784, 12800, 12816, 12832, 12848, 12864, 12880, 12896, 12912, 12928, 12944, 12960, 12976, 12992, 13008, 13024, 13040, 13056, 13072, 13088, 13104, 13120, 13136, 13152, 13168, 13184, 13200, 13216, 13232, 13248, 13264, 13280, 13296, 13312, 13328, 13344, 13360, 13376, 13392, 13408, 13424, 13440, 13456, 13472, 13488, 13504, 13520, 13536, 13552, 13568, 13584, 13600, 13616, 13632, 13648, 13664, 13680, 13696, 13712, 13728, 13744, 13760, 13776, 13792, 13808, 13824, 13840, 13856, 13872, 13888, 13904, 13920, 13936, 13952, 13968, 13984, 14000, 14016, 14032, 14048, 14064, 14080, 14096, 14112, 14128, 14144, 14160, 14176, 14192, 14208, 14224, 14240, 14256, 14272, 14288, 14304, 14320, 14336, 14352, 14368, 14384, 14400, 14416, 14432, 14448, 14464, 14480, 14496, 14512, 14528, 14544, 14560, 14576, 14592, 14608, 14624, 14640, 14656, 14672, 14688, 14704, 14720, 14736, 14752, 14768, 14784, 14800, 14816, 14832, 14848, 14864, 14880, 14896, 14912, 14928, 14944, 14960, 14976, 14992, 15008, 15024, 15040, 15056, 15072, 15088, 15104, 15120, 15136, 15152, 15168, 15184, 15200, 15216, 15232, 15248, 15264, 15280, 15296, 15312, 15328, 15344, 15360, 15376, 15392, 15408, 15424, 15440, 15456, 15472, 15488, 15504, 15520, 15536, 15552, 15568, 15584, 15600, 15616, 15632, 15648, 15664, 15680, 15696, 15712, 15728, 15744, 15760, 15776, 15792, 15808, 15824, 15840, 15856, 15872, 15888, 15904, 15920, 15936, 15952, 15968, 15984, 16000

If you want any more, I'll let you work them out.

Electromagnetic Induction.

an electromagnet

Something that is very clear or easy to understand.