c_mitra
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Yesterday, 14:43c_mitra replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsThere is one example in the application notes that can be used to set the lower point (the voltage needed to light up the first LED) and also the...7 replies | 303 view(s) -
Yesterday, 04:32c_mitra replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsNo, it won't work; because the driver for the display takes the power from the same battery and the ground is common. You need to have an offset...7 replies | 303 view(s)
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9th December 2019, 17:42I should have checked before posting. Thanks anyway7 replies | 370 view(s)
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9th December 2019, 05:02I was under the impression that the number is 255 (256 with zero excluded).7 replies | 370 view(s)
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9th December 2019, 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 | 736 view(s)
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9th December 2019, 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 | 256 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 | 1423 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 | 724 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 | 1423 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 | 736 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 | 1423 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 | 471 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 | 736 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 | 724 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 | 761 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 | 761 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 | 817 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 | 279 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 | 817 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 | 887 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 | 817 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 | 817 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 | 817 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 | 1346 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 | 1423 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 | 887 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 | 1105 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 | 1105 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 | 1105 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 | 1027 view(s)
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