c_mitra
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Yesterday, 17:42I should have checked before posting. Thanks anyway7 replies | 308 view(s) -
Yesterday, 05:02I was under the impression that the number is 255 (256 with zero excluded).7 replies | 308 view(s)
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Yesterday, 03:02PCB layout is an art and some consider it as a black art! Simple advice that may work sometimes: group blockwise and keep related blocks close.12 replies | 459 view(s)
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Yesterday, 02:52Each resistor has two ends. It is a symmetrical device in the sense that you can exchange the two ends without ANY effect. Let us label the two...4 replies | 199 view(s)
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8th December 2019, 18:03c_mitra replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsCarbon has basically two allotropes: graphite and diamond. Of these only graphite is conducting. Ignore some of the nano forms of carbon-...33 replies | 1335 view(s)
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8th December 2019, 17:24Do you want a circuit using a MOSFET that does simulate a capacitor? What is the frequency range and the voltage specification? I presume there...18 replies | 561 view(s)
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8th December 2019, 16:44c_mitra replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsThere is nothing like a carbon dioxide resistor. Two common types are composite and film. For low values (say less than 1M) you can usually...33 replies | 1335 view(s)
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7th December 2019, 14:50Follow the suggestions in #4 post. Fast turn on and turn off will reduce the losses but design and layout will be more critical. It is perhaps...12 replies | 459 view(s)
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7th December 2019, 14:35c_mitra replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsYou have given a link and I have glanced through that. The problem with "their" argument is that switching produces ringing (noise) which is true....33 replies | 1335 view(s)
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7th December 2019, 09:39c_mitra replied to a thread Confusion with relating the sensor output voltages from its datasheet in Robotics and Automation Forum500 ug = 500 x1e-6x980 cm.sec^(-2) = 0.49 cm.sec^(-2) ---> bit small but can be measured. As others have pointed out earlier, the output will be...4 replies | 308 view(s)
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7th December 2019, 09:24Yes, you can. But for 1.5kw output, you will have a current of 125A; add some margin and get FETs that can handle 200A or so. Driver side may...12 replies | 459 view(s)
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7th December 2019, 09:16You are right here. Mosfet cannot do anything by itself; it does what it is supposed to do. Usually you tell it what to do by giving a voltage to...18 replies | 561 view(s)
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6th December 2019, 03:59The bug was actually associated with the floating point division processor (NDP) - divisions take considerably longer time and they use different...13 replies | 684 view(s)
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4th December 2019, 13:02For 8 bit unsigned int, you will need a table 256X256 in size. The products shall need 16 bit storage. For the slowest method (school book way) it...13 replies | 684 view(s)
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4th December 2019, 12:51c_mitra replied to a thread [SOLVED] Average vs RMS load-current for LDO design in Analog Circuit DesignA quick summary: Avg value of noise = const DC offset + avg (noise) --> zero (second term) (Avg of noise is always zero except for the offset; or...36 replies | 728 view(s)
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4th December 2019, 03:34c_mitra replied to a thread How to make a coil to be resonance? in Electromagnetic Design and SimulationIt already have a natural resonance frequency; because of internal parasitic capacitance. You can either measure it directly or estimate it...3 replies | 246 view(s)
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3rd December 2019, 07:17c_mitra replied to a thread [SOLVED] Average vs RMS load-current for LDO design in Analog Circuit DesignBut this needs more details.36 replies | 728 view(s)
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2nd December 2019, 17:46I am not so fortunate; inside temp in winter (Dec-Jan is the coldest in my part of the world) around 27-30C (outside it can be 40C in direct sun). In...9 replies | 686 view(s)
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2nd December 2019, 17:30c_mitra replied to a thread [SOLVED] Average vs RMS load-current for LDO design in Analog Circuit DesignIn that case, the rectified output of an AC is not DC; but I am not sure what is the more common understanding.36 replies | 728 view(s)
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2nd December 2019, 17:10c_mitra replied to a thread [SOLVED] Average vs RMS load-current for LDO design in Analog Circuit DesignNot correct. This is true only for a constant current. I guess I need not elaborate.36 replies | 728 view(s)
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2nd December 2019, 13:17c_mitra replied to a thread [SOLVED] Average vs RMS load-current for LDO design in Analog Circuit DesignIt is surprising; a small digital circuit as a load to a LDO regulator is not expected to act like this! Can you please provide more details?36 replies | 728 view(s)
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2nd December 2019, 12:35c_mitra replied to a thread [SOLVED] Lenovo laptop problem during installing LINUX OS in General ComputerModern linux is quite robust: did your installation went through all right? Please mention the specific distribution of Linux you are using....6 replies | 1186 view(s)
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2nd December 2019, 12:30c_mitra replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsTrue. As long as it works. A good power supply can make several iota:s of difference. A simple capacitor snubber across the rectifier diodes can...33 replies | 1335 view(s)
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2nd December 2019, 01:09Good that you found a solution. You need to estimate the heat being produced by the device and how to transport this heat to elsewhere. You may still...9 replies | 686 view(s)
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2nd December 2019, 01:02I am not sure whether you are conducting these experiments with sufficient care and safety protection. Potassium permanganate mixed with sulphuric...15 replies | 1053 view(s)
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28th November 2019, 15:42Hydrogen gas will appear at the Al electrode when there is no current. As soon as you start drawing current, hydrogen ions will move towards the Cu...15 replies | 1053 view(s)
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28th November 2019, 14:54Hydrogen evolution is the basic reaction. The hypochlorite acts a depolariser and you will get HCl produced as a result. HCl is an acid and will get...15 replies | 1053 view(s)
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27th November 2019, 18:52Actually, the formal expansion for atan(x) is: atan(x)= x -x*x*x/3 +x*x*x*x*x/5 -x*x*x*x*x*x*x/7 +.... This series expansion converges slowly...22 replies | 936 view(s)
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27th November 2019, 15:23Take a look at the original set of data. Sometimes a plot says a lot. So I plotted the last column against column 1. This is what I get: ...22 replies | 936 view(s)
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27th November 2019, 04:00You need to tell us the difference in the two environments before we can make out some sense of the two readings. Then also interchange the two...9 replies | 686 view(s)
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