BradtheRad
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Today, 02:38BradtheRad replied to a thread Extracting energy from gyroscope precession in Mathematics and PhysicsThis jogs my memory about a mystifying physics demonstration. Sit on a free-turning chair, feet off the floor. Start a bicycle wheel spinning with...13 replies | 489 view(s) -
15th September 2019, 20:18BradtheRad replied to a thread What is the conditions for complementary BJTs in Analog Circuit DesignGain and power rating are probably chief parameters to match, especially if you wish to push your amplifier to its maximum performance. Also the...3 replies | 193 view(s)
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15th September 2019, 05:12BradtheRad replied to a thread li-ion voltage reducer to 3volt - help needed in Hobby Circuits and Small Projects ProblemsMy wireless mouse takes 3V @ 10mA. I made a battery pack from 2 half-used D cells. 2.5V is sufficient to operate the mouse. If your setup is...5 replies | 266 view(s)
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14th September 2019, 20:03BradtheRad replied to a thread PS with LM76003 for variable volatage and variable current design? in Analog Circuit DesignWhen you draw high power your output capacitors have to carry 1 or 2 Amperes per cycle. That's thousands of times per second. It may be all right to...1 replies | 164 view(s)
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14th September 2019, 03:05BradtheRad replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsYes, there are schematics on the internet which resemble your circuits. My observations are general since I'm not familiar with their operation. ...4 replies | 396 view(s)
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13th September 2019, 23:52BradtheRad replied to a thread FYP ideas suggestion on FPGA, or FPGA based network processing/network on chip in PLD, SPLD, GAL, CPLD, FPGA DesignI guess this is asking for ideas about a Final Year Project title? Try a forum search on your words of interest. Also click on related threads...5 replies | 243 view(s)
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13th September 2019, 09:54vivekroy replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsBut doesn't this look like a stacked power amplifier? Do we need to care about open loop stability of a power amplifier? If we can get rid of the...4 replies | 396 view(s)
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13th September 2019, 09:49Use the delay function to plot the delay between the two wave-forms and then do a Y vs Y plot. Alternatively you can save both your...15 replies | 495 view(s)
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13th September 2019, 06:54BradtheRad replied to a thread How to calculate bandwidth for this circuit, including lower and higher cut off freq in RF, Microwave, Antennas and OpticsYour schematics have a number of LC loops, and capacitors which can be switched in and out of the network. It looks as though components are able to...4 replies | 396 view(s)
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13th September 2019, 06:29A lot depends on the travel distance of the pointer. By mounting a tiny strong magnet on it, its position may be detected by a hall sensor. To get...3 replies | 227 view(s)
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12th September 2019, 19:51vivekroy replied to a thread Verilog-a code to latch analog voltages in Analog Integrated Circuit (IC) Design, Layout and FabricationHere you go // VerilogA code `include "constants.vams" `include "disciplines.vams" module veriloga_latch(vin,vclk,vout_sampled); input...7 replies | 284 view(s)
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12th September 2019, 14:01vivekroy replied to a thread Verilog-a code to latch analog voltages in Analog Integrated Circuit (IC) Design, Layout and FabricationLook at page 113 of http://www.lumerink.com/docs/VerilogA.pdf Your exact solution is given!!7 replies | 284 view(s)
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12th September 2019, 13:47Connect a capacitor to your charge pump output. Make sure its large enough so that when the CP turn on, the voltage does not change too much. ...15 replies | 495 view(s)
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11th September 2019, 20:13vivekroy replied to a thread In PA, if the bias is VDD then how can swing be 2*VDD with inductive load in RF, Microwave, Antennas and OpticsYou have the explanation there. If you want more insight into such behavior, refer to "Pulse, Digital and Switching Waveform" by Millman and Taub.2 replies | 200 view(s)
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11th September 2019, 01:21Your schematic has at least one inductor in the current path. An inductor tends to generate current during dead time. It could affect V-versus-A...3 replies | 180 view(s)
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10th September 2019, 23:33BradtheRad replied to a thread Calculate the load capacitance in oscillators in Elementary Electronic QuestionsEach logic gate has some resistance in its output stage. This means it can provide (source) limited amount of current to the load. Your capacitor...2 replies | 226 view(s)
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10th September 2019, 08:02Hi everyone, ALLPCB will regularly give special offers to express our gratitude for your continuing trust and business. Now we provide a special...0 replies | 158 view(s)
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9th September 2019, 22:13Yes, you can send the upper waveform through a simple RC or LR circuit, as a low-pass filter, to get the circled waveform.6 replies | 312 view(s)
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9th September 2019, 06:09BradtheRad replied to a thread 3 phase 4 wire(480V) AC to 12VDC (100mA) power supply for energy metering application in Power ElectronicsIs your meter portable? Can it run on a 9V battery? Or several rechargeables? Is your meter installed permanently? Can you power it from a wall...9 replies | 414 view(s)
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9th September 2019, 05:17BradtheRad replied to a thread Charge pump topology in Analog Integrated Circuit (IC) Design, Layout and FabricationThis voltage multiplier is a Nakagome type. Capacitors charge in parallel, discharge in series. Additional stages can be added until output is 3.3...4 replies | 551 view(s)
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8th September 2019, 14:04vivekroy started a thread Changing the 'VSS' value in CppSim in Analog Integrated Circuit (IC) Design, Layout and FabricationBy default most digital blocks in CppSim have an output between -1 and 1. I want it to be between an user-defined fixed set of values, for eg. 0 and...0 replies | 130 view(s)
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8th September 2019, 13:37vivekroy replied to a thread Help on Ocean scripting: run one analysis and use that results in another in Analog Integrated Circuit (IC) Design, Layout and FabricationI don't like using calcVal in global variables. I always prefer using it in local variables. (Make sure to disable the global variables by unchecking...8 replies | 372 view(s)
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8th September 2019, 13:03vivekroy replied to a thread Help on Ocean scripting: run one analysis and use that results in another in Analog Integrated Circuit (IC) Design, Layout and FabricationYeah, it is not a calculator function. I think maybe the SKILL Language Reference Manual? Or maybe in the SKILL API Finder which can be...8 replies | 372 view(s)
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7th September 2019, 18:57BradtheRad replied to a thread Homemade music lighting system with controller board(s) in Hobby Circuits and Small Projects ProblemsA bargraph can also be made from op amps arranged as a window comparator. The more led's in your display, the more impact it has. For the fun of...8 replies | 610 view(s)
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7th September 2019, 06:06vivekroy replied to a thread Help on Ocean scripting: run one analysis and use that results in another in Analog Integrated Circuit (IC) Design, Layout and FabricationI did not follow the question. The design variable for your second analysis is a result of the first analysis? If that is the case, then split...8 replies | 372 view(s)
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6th September 2019, 08:14vivekroy replied to a thread How does this OTA operate with very low voltages in Analog Circuit DesignThis is what I think (and I maybe wrong).. Your input pair will continue to work in saturation as long as the drain voltage (== Vgs of nMOS...1 replies | 208 view(s)
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6th September 2019, 07:49BradtheRad replied to a thread Homemade music lighting system with controller board(s) in Hobby Circuits and Small Projects ProblemsYou may be familiar with the 3914 IC (dot/bar display driver). Ten output pins activate ten led's (or ten transistors which each control a high...8 replies | 610 view(s)
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