reachrkata

reachrkata

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Member since
Nov 3, 2006
Last active
Jan 6, 2011
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  1. #Threads

    3eb0a64b-6041-4340-a7c3-2d4e83f01f05

    Its perhaps true. There is a passing reference to this rivalry in the movie "The Prestige" if anyone has seen it. -...

  2. #Threads

    0619f4f4-4601-47ff-b500-cb403c3ca2ba

    There is usually a battery management IC which does this. It senses the presence/absence of power and starts charging accordingly.

  3. #Threads

    01e3f711-bf1f-4404-ad84-719a793836e7

    Yo thanks !!!

  4. #Threads

    3da17864-0678-4a17-b289-fa5559391a3a

    What you have to realise here is that KVL should not be applied along with Superposition. These are two separate tools of...

  5. #Threads

    ad4a4447-feae-4666-9101-a70f72a32d11

    There are 2 ways to understand this - 1) Consider the voltage equation of a cap V = 1/C * (integral) i.dt....

  6. #Threads

    4b26c8b6-a99a-435e-8155-c946b99c8368

    Exactly. But what you need to understand is that, the superposition theorem is just a mathematical method of simplifying analysis of circuits...

  7. #Threads

    51275f47-2795-400d-a9e2-c342d339eead

    Re: Why source generated signal frequencies are converted into carrier frequencies... Perhaps this thread help !! #-Link-Snipped-#

  8. #Threads

    00f9b607-a6cf-4f3d-8e2c-711b62581765

    Hello LEon, You are correct in starting out with a list like you mentioned. Further to that, I have a few suggestions...

  9. #Threads

    5cea7da1-dd44-4ada-b840-b1b905050e44

    A current of 1A will flow through the resistor. The voltage drop across the 2 Ohm resistor balances the 2V voltage source...

  10. #Threads

    e0c32d1f-8540-428d-ab66-725c554ac888

    Assuming sinusoidal signals, it is neither 0 nor 45, but in fact at 30 degrees !!! -Karthik

  11. #Threads

    c04c9ee2-9470-44f6-be1b-4ac8773bf292

    Nah nothing like that. I have been checking all the posts in the forum and replying to some also. Perhaps I don't...

  12. #Threads

    45370ead-336a-4320-afd9-0d1655333a5c

    Hey K, Its almost like how you said, but its just that the speed will be a minimum of XMBps. <a href="https://en.wikipedia.org/wiki/Secure_Digital#Speeds".....

  13. #Threads

    4ce7a750-3fcc-4795-8607-30832cb07eaf

    skipperWell, if you adjust the volume for a number of different broadcast signals, using a battery-powered radio, so that in each case...

  14. #Threads

    cf734678-0770-49c0-8b05-d27a04af9ac7

    Thats because, usually, lifts/elevators are closed metal boxes, which are very good shields for RF signals. However, there are solutions available to...

  15. #Threads

    9328969e-8ae0-4792-9e18-0f8fa7a6b8a4

    I dont see any particular difference except that in a single supply scenario, both the inputs need to be biased with 1/2...

  16. #Threads

    971b1b0b-5c9d-410a-897c-e48262fe3185

    qaisarpk1its fine mohit ..... as u said that the lower frequncy travel more distance then why we modulate low freq signal on...

  17. #Threads

    b55f639f-9362-4275-8658-541833b52c35

    Another important item that makes the UPS heavy is a step down transformer. There are transformer-less UPSs also available. However all the...

  18. #Threads

    32faabcf-fbc8-4a82-a15c-90da80df627a

    No. Since the current will flow from the 5V supply into the 3V supply, it will always gain power. It is like...

  19. #Threads

    11083366-c97f-4da5-bae3-0ac5bff67fca

    In fact it gains power = 6mW. - Karthik 😁

  20. #Threads

    9dbb6312-7614-495d-92de-2ab8cb8949c2

    #-Link-Snipped-# Check this out. - Karthik

  21. #Threads

    4e71db1d-bce8-4350-86ee-64dba261846d

    One way is to give a step input to the circuit and calculate the output based on the rise time at the...

  22. #Threads

    cf08ab94-d44f-499c-92ab-5ab5c169da33

    Adding an inductor should slow down the voltage rise. -Karthik

  23. #Threads

    268b94d7-f28d-4ad8-a995-6bb6172a1717

    Yes for analysis, it can be assumed ideal. For current sources, the ideal scenario is that its internal shunt resistance is infinite....

  24. #Threads

    d3236e1a-7309-4f37-b763-7898c63b0cab

    shreyasm89.. Remember there is no difference in the values of currents at the i/p and o/p of a current source. this implies...

  25. #Threads

    8abd3082-9f8f-4e0f-a8ee-8c1e68ed6e01

    Before I tell you what I want to tell, let me first confirm that, yes, we can measure the current through a...

  26. #Threads

    2ed0da8d-aab4-47c9-8fb4-9043b1ac8834

    Usually such settings (like the las channel visited, last volume level) is stored in EEPROM before switch-off. On switching on, it does...

  27. #Threads

    55858b36-ce74-4c35-9b31-ff1637489b9d

    Since you have 2 memory devices of 512K each, they require 19 address lines. Use the 20th address line as a select...

  28. #Threads

    c0a6fa15-06a5-48cd-a57e-d0930b42a569

    If you recall your engineering, Potential at a point is defined as the work done to move a charge from infinity to...

  29. #Threads

    f3e89183-9eb0-4444-a92f-880dceedd19a

    @Ashish - You understood me wrong. 2 stations can be transmitting at the same signal level. But if one of the stations...

  30. #Threads

    95389252-abbb-4419-9cbe-04795d2e089f

    Its just because of the distance between the two sources. Just like there are norms governing bandwidth, deviation, etc, there are also...

  31. #Threads

    ebfeb85e-e148-493b-87e7-61c7a6da5ffc

    No it will rise, but not instantaneously. It will rise exponentially. -Karthik

  32. #Threads

    2edfc69a-f157-4bc5-b4bd-77b77027a6ee

    In fact the capacitors never charges again. All the electrons in the -ve terminal flow instantaneously to neutralise the positively charged terminal....

  33. #Threads

    ec265d00-e383-4791-8b0f-4cfc81267629

    Use superposition theorem to get the output of the non inverting amplifier for the 2 inputs separately. Add the results and you...

  34. #Threads

    ea8101e6-57cb-4712-804c-aea6ef57cd10

    Around 3.4V. -Karthik 😁

  35. #Threads

    604d8f44-5baf-4b1d-8faf-2f2afde6ad7a

    The most important is the Gate - source capacitance. This decides how fast the MOSFET can switch. -Karthik 😁

  36. #Threads

    260fca04-377d-4645-8c3f-4bb5e9eb7631

    If you are using devices that usually work on DC - Like your laptop, TV, stereo system would not be affected that...

  37. #Threads

    4e83cda6-77bd-4ceb-9672-18894fc863be

    No sweat Ash !! i too learnt it only in my company !!! -Karthik 😁

  38. #Threads

    d386eeaa-9bd8-417c-ae5b-bd7149aa9a83

    Perhaps this clarifies everything - -Karthik 😁

  39. #Threads

    fa4785bc-16a5-4848-a8b6-764a06ea3fe6

    Sure can. You can do it with a single ADC port. Connect the ADC port to the supply via a 47k pull-up...

  40. #Threads

    20eb9b84-8fb6-4130-90ff-4592b457af05

    Nope, Batteries in series retain the Ah rating, and batteries in parallel retain the voltage rating. - Karthik 😁

  41. #Threads

    c5504cad-8aa7-430b-b199-a092b69e677d

    Usually there is no need to change anything if you are using an 8 Ohm speaker because for the same power output...

  42. #Threads

    05eda846-b953-416a-9ef6-26bc6f99a100

    My 2 paise - Take the standard available up/down converter ICs. Then use a binary to 7 seg decoder for interfacing with...

  43. #Threads

    e9331080-02be-43e0-94d0-8b8e117ad146

    In a way yes !!! -Karthik

  44. #Threads

    85aea86a-4b6d-4af4-8f56-e3d15a02be7d

    It is dangerous to connect the power supply directly to your battery. The current may be so high that the battery may...

  45. #Threads

    c1c8db1c-0c7a-49d7-b282-f4481937d7e5

    The principle is called zener breakdown. Due to the way the diode is doped, when a reverse voltage is applied, the depletion...

  46. #Threads

    79affd9f-0c1f-467a-9bee-ec36f5523f75

    The secret lies in the very small thickness and very light doping of the base. With the base voltage, there are so...

  47. #Threads

    c95b191b-e4b4-40f5-b710-42917f715d51

    I think so yes !😕 -Karthik

  48. #Threads

    5350e289-ed4a-43e5-ad21-a2d6988ba450

    adi21288@karthik dude i dint understand your concept, i mean u r feeding a dc voltage to a low pass filter (high voltage...

  49. #Threads

    8b330571-6d4d-4306-98d8-ae7737c04150

    I got this nice idea from a colleague of mine, so quoting him here. Use the capacitor as part of an RC...

  50. #Threads

    34ee88bb-0c0c-4564-a53d-48038f5371c1

    I think then it would act like a Tank circuit which can be used as an oscillator. -Karthik

  51. #Threads

    eb38175a-af79-4256-9329-3ff57b0c3c43

    Its perhaps just the direction of inclination of the blades. - Karthik

  52. #Threads

    ca6eb9fa-625d-4d5f-bd33-08ccd0c95639

    Aha !! Nothing is lost my friend !!! Initial energy = 0.5*C1*V1^2 + 0.5*C2*V2^2 = 0.5*1*1^2 + 0 = 1 J0.5*1*1^2 =...

  53. #Threads

    a2534136-32aa-416f-bc26-d15bd32704a2

    Hmm. I think you would not see any appreciable difference. The speed of electron flow is so fast compared to the speed...

  54. #Threads

    bb55033c-f5ac-4233-a9fb-a7ce041ca278

    Zero (assuming ideal caps)!!! Anything you do with only capacitors on DC sources makes no difference. -Karthik 😁

  55. #Threads

    581b98d5-edba-47a6-bf1e-03f6216edb44

    Agree to that. Perhaps a part of the loss is due to loading itself. Sometimes, certain switching supplies tend to go into...

  56. #Threads

    ddabb877-bbd1-4338-a402-78b740a61775

    Hmm. Since the scope is a 50MHz one, and your carrier is only 10MHz, i think you can measure it. Just probe...

  57. #Threads

    4eb7cf4c-c868-4246-a63a-ddabbcd3519e

    No need of a resistor. If your bulb is rated for 230V AC, then just ut the bulb to the supply and...

  58. #Threads

    23ad6e54-9cf2-4b24-a47f-78f3a7d0bf9b

    Great !! Then the maximum voltage swing is 9.9 - 3.3 = 6.6V. This behaviour can also be simulated in Multisim. To...

  59. #Threads

    0274b016-f838-421e-bfc2-8b09b633b790

    Ok here goes. I presume that you are requesting the output voltage swing calculation for the normal CE amplifier ckt with Rb...

  60. #Threads

    a4d66162-da26-442e-b660-dab9cfeeb962

    Perhaps this thread will help you with a simple password entry keyboard - #-Link-Snipped-# - Karthik 😁

  61. #Threads

    7984e32f-8c70-4372-8c33-e985dbdcdcc1

    Infrared sensors are commonly used for this. -Karthik

  62. #Threads

    69d644fc-deb2-4578-9218-9fc6c4b0d0a6

    Repeated on-off is just one of the scenarios. Another typical application would be to switch off/on something based on a special condition...

  63. #Threads

    03d19e57-bbe2-4fb3-8fc4-12597a40a549

    Simplest and straightforward answer - An electronic switch eliminates Human intervention i.e you can write a program to turn on and off...

  64. #Threads

    9e881de4-5ae5-4245-857a-ecac609080b8

    300mA should be OK. In fact I feel it is an overkill, but nevertheless its fine. In any case there is no...

  65. #Threads

    eb6619bb-4e55-4c75-a7e1-bb55e76d6380

    Hmm !!! It is a bit tedious to explain this circuit, because there is a reason for each and every value of...

  66. #Threads

    21b0e64c-c7b1-4ed7-8b9d-a8d576666d21

    Doesn't matter !! There is no relationship between the mAh rating of the battery vs the current rating of the adapter. The...

  67. #Threads

    9b68d83b-c90c-4a09-aad1-0c542aebab97

    Of course, based on the temperature the Ohmic value would vary. But the device remains Ohmic nevertheless !😉 -Karthik

  68. #Threads

    26bc39dc-a952-4c9c-b46d-11f637f6d2bc

    This is how I understood the circuit - 1) R1-C1-D1-D2 form a clipping circuit such that, before diode D3, we get a...

  69. #Threads

    8950dcbf-5d67-4243-9166-208948a52008

    Hey Big Ohm, All electrical devices are Ohmic in a way. The heating element in the heater is Ohmic and so is...

  70. #Threads

    fe129710-899f-4895-8495-b8ebff67c2f8

    Simple - Given that Power supply is 5V, and LED Vf is 1.4V. The rest of the voltage has to drop in...

  71. #Threads

    69a13186-e92e-4710-991b-5e50e085273f

    1) I totally disagree with them. When you connect two loads in series, the current through them is always the same. WHATEVER...

  72. #Threads

    2143dfe0-717b-4e0b-9212-90e12e3353ee

    I think this link gives a circuit to you without the need of Schmitt triggers - <a href="https://ece.uprm.edu/%7Epol/pdf/icee04CruzPol.pdf" target="_blank" rel...

  73. #Threads

    56ee9a3a-6832-48ca-a636-7cf2ee6ca288

    1) 1:1 2) 2000W 3) 50W 4) (1/4*Pi*Epsilon)(p^2*a^2/d^2) - None of the choices. - Karthik

  74. #Threads

    42ab97c2-423c-4314-85c5-1fd5fbd8fec3

    Try photodiodes / Phototransistors. -Karthik

  75. #Threads

    c77f2fb4-83a0-4a2f-b7cd-d769c66dd42e

    Though i am not completely sure about it, i think the half digit means that in the Most Significant digit position, all...

  76. #Threads

    823387bd-551a-4cfa-8f10-96e2efeab2a6

    XL/r ? - Karthik

  77. #Threads

    dc085807-cef3-4019-bddf-076afe33017a

    Before we go to the actual solution, lets see if people can get the answers first - a) Max power used =...

  78. #Threads

    9cb5f8a1-99f4-41af-98db-23f901f609d7

    Hi Noj, I fell i am not exactly able to understand what you have implemented in order to comment on it. Like...

  79. #Threads

    17a565fb-4f13-4686-a7ee-b208d85e7c14

    The problem is the NAND gate. Assume S1 is upper sensor output and S2 is lower sensor output, and assume that when...

  80. #Threads

    55001228-0b19-42e7-99ec-be53447ea246

    Hmm !!! Perhaps you should just check the theory behind the circuit in your text books and try out the calculations. Then...

  81. #Threads

    c6df6658-2613-4a6c-a876-539f902dc1f9

    Which is the IR receiver you are using? Can you give the part number? From what i understand from the circuit, you...

  82. #Threads

    2ef789cd-f261-4822-b4e6-1637168edf88

    The reason why the astable will not get simulated in any circuit simulator (incl PSPICE) is because the astable works on the...

  83. #Threads

    80c366a1-baa7-4dfe-81bb-3b8af4dfdf83

    Ok, here is what i understood - 1) Circuit with IC1 is an Astable Multivibrator to generate the clock for IC2. The...

  84. #Threads

    97b0af83-e69a-4638-8841-cfedb4bc9b6a

    Exactly ! Plus also connect pin 4 to GND. -Karthik

  85. #Threads

    67b8d04c-8236-4b4e-9473-61fb9fd70bb6

    Yes you will see an output at pin 1 of the Opto. But this will not be useful because the R1 =...

  86. #Threads

    bd81c963-c732-4ef6-a471-6688808893ce

    The main idea of using Schematic page 5 is given on Page 4 of the same document. It is a 120 kHz...

  87. #Threads

    24e688ec-eddc-42a1-a69b-74498068e9f9

    That is because the behavior of the component is such. Whenever a current flows through the LED in the Opto, we expect...

  88. #Threads

    1b7ce253-7beb-4c6f-a2c7-9c1319f2443b

    It would still be an exponential charge or discharge depending on whether the final voltage at the 2nd circuit is respectively higher...

  89. #Threads

    c5ee36cd-f77e-4424-8176-f3f41216bc14

    I can think of only 1 reason - GROUND ISOLATION. -Karthik

  90. #Threads

    b565899c-18ff-41b2-8275-e5f43002788b

    1) Yes the circuit is correct. No mistakes. No need of the Opto to check the output. Just check the voltage at...

  91. #Threads

    729d47d3-cefc-4ff0-af17-7ad50df7df4c

    Firstly let me indicate my understanding of the circuit - 1) The opto gets on when 1,4,7 are pressed in that sequence...

  92. #Threads

    111ad52d-21cc-471a-ac27-58526cd24e2f

    1) The input resistance depends on the Load current - because the load current causes a voltage drop across the resistor. Therefore...

  93. #Threads

    b16aca34-a007-47a6-a662-f29625971e7d

    To answer your questions - 1) Its the other way, when we require to activate the buzzer, a HIGH is given by...

  94. #Threads

    e5e71b23-4934-40ac-83dc-b58d7c3aeacd

    To answer your questions - 1) Its the other way, when we require to activate the buzzer, a HIGH is given by...

  95. #Threads

    76efef8d-bfa4-410d-a173-2df66c9efe61

    Since i cant draw an actual circuit, let me try it this way - 1) You would need two more MOSFETS to...

  96. #Threads

    5a50a624-3cc7-4ec9-8cc3-41592332555b

    Here goes - Refer the datasheet of DS12887 on the internet. Its a Real Time Clock IC. The Controller AT89C52 is reading...