FvM
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Yesterday, 23:49What do you mean with "same result"? You can't achieve more than 100% rectifier efficiency. Assuming 2V LED + rectifier forward voltage for...1 replies | 52 view(s) -
Yesterday, 23:28FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Power ElectronicsYou can determine the optimal pulse timing for harmonic cancellation using fourier series and Excel solver. I'll send you an example tomorrow.4 replies | 184 view(s)
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Yesterday, 17:39It depends. If a product is directly protected by a patent, US law requires to mention the patent file in datasheet. See e.g....1 replies | 126 view(s)
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Yesterday, 17:17Just look at the waveform...12 replies | 209 view(s)
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Yesterday, 15:34What did you conclude? The higher sampling rate doesn't change the picture, you have superimposed ripple during the first 45 degree. To me, it...12 replies | 209 view(s)
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Yesterday, 15:02FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Power ElectronicsA similar modulation scheme with harmonic cancellation is referred to as Magic Sinewaves, for some reason using an even number of pulses per half...4 replies | 184 view(s)
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Yesterday, 14:06The angle values are monotonic, but not equidistant. Obviously the sin/cos readings are not corresponding to constant speed rotation, there seems to...12 replies | 209 view(s)
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Yesterday, 12:12FvM replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsUp to now, I was under the impression that the main purpose of rectifier bypass caps in audio equipment is to reduce MF and SW interferences from...11 replies | 262 view(s)
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Yesterday, 12:02FvM replied to a thread sampling rate vs rate of change of input for control system in Analog Circuit DesignNot necessarily satisfied. It depends on the speed change rate. A more practical viewpoint could be: How is the position information processed in...12 replies | 379 view(s)
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Yesterday, 11:42atan2() function has no "undefined situations". It's defined over full four quadrants. Review literature before guessing Simultaneous sampling...12 replies | 209 view(s)
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Yesterday, 11:09FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Power ElectronicsJust for clarification, with 5 pulse unipolar, you are referring to a waveform like below? It has 5 degrees of freedom, should allow to set...4 replies | 184 view(s)
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Yesterday, 10:20You'll use atan2() function to convert sin/cos values to angle after digitizing it.12 replies | 209 view(s)
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16th November 2019, 17:14I presume it's a Proteus simulator error message? Check if xlcd.h is configured for 4-bit mode (the default). If this is the case, there may a...2 replies | 182 view(s)
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16th November 2019, 16:32FvM replied to a thread [SOLVED] Mains leaking currents causing problems in my house in Elementary Electronic QuestionsWhat devices are you talking about? Appliances with two pin connector are designed with safe insulation. If they involve metal cases or parts, the...59 replies | 4028 view(s)
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16th November 2019, 15:55FvM replied to a thread Doubt in the concept of 3 phase thyristor based full wave fully controlled rectifier in Power ElectronicsNot sure if the thyristors in your schematic are real semiconductor devices or virtual switches with a logic input. In the former case, the trigger...4 replies | 148 view(s)
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16th November 2019, 15:38FvM replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsThe emphasis is on implementing, not the meaning of CRC. How should it be implemented in the bridge device which is just transporting UART...11 replies | 454 view(s)
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16th November 2019, 15:31The table is only giving examples for certain crystal frequencies, for other frequencies use the given formula. 16 MHz is one of the "standard"...6 replies | 199 view(s)
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16th November 2019, 14:42FvM replied to a thread Low and high impedance of low pass stepped impedance filter in RF, Microwave, Antennas and OpticsThe low and high microstrip impedances can be chosen arbitrarily within certain useful limits. In the first place, substrate properties and feasible...2 replies | 146 view(s)
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16th November 2019, 13:42FvM replied to a thread TVS Diodes power ratings for IEC 61000-4-5 in Professional Hardware and Electronics DesignAccording to my reading of the standard, power lines have to be tested with 1.2/50 ĩs (8/20 ĩs short circuit) pulses. You should choose TVS diodes...3 replies | 197 view(s)
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16th November 2019, 13:03Please review the datasheet, particularly chapter 10.1 USART Baud Rate Generator. You'll see that it's not feasible with standard crystal...6 replies | 199 view(s)
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16th November 2019, 12:49FvM replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsMCP2221 is a hardware USB CDC/HID bridge, it doesn't involve a microcontroller core. As for the UART functionality, it's similar to popular...11 replies | 454 view(s)
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16th November 2019, 11:38FvM replied to a thread How to generate sine wave using Verilog? in ASIC Design Methodologies and Tools (Digital)Use the most significant (= sign) bit.9 replies | 549 view(s)
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16th November 2019, 11:33FvM replied to a thread Mains harmonic emissions for dimmable offline LED drivers. in Power ElectronicsThey may e newer or more specific test specifications for dimmable LED lamps. The best fitting specification in IEC 61000-2-3:2009 says under C.5.3...8 replies | 216 view(s)
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15th November 2019, 23:59FvM replied to a thread TVS Diodes power ratings for IEC 61000-4-5 in Professional Hardware and Electronics DesignYou should clarify which of the 61000-4-5 test pulses has to be handled by the protection circuit, also what's the intended TVS voltage. TVS ratings...3 replies | 197 view(s)
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15th November 2019, 09:54dpaul replied to a thread Using a BFM in system verification code. in ASIC Design Methodologies and Tools (Digital)It should be possible to instantiate the BFM in your master testbench. The syswip IP should have some doc on that. Years ago I used the syswip...2 replies | 132 view(s) -
14th November 2019, 17:05FvM replied to a thread Trying to understand mismatched antenna behaviour above 20GHz without equipment. in RF, Microwave, Antennas and OpticsLooks like standing waves of a 1.5 ns (about 30 cm) transmission line.2 replies | 169 view(s)
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14th November 2019, 10:09Why? They are copying the complete EPCS content to the *.jic file.21 replies | 1360 view(s)
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14th November 2019, 09:37FvM replied to a thread Differential amplifier measure -32V to +32V with single 3.V supply in Analog Circuit DesignThe asymmetrical input structure implies unequal input impedance. I prefer a true instrumentation amplifier (either 2 or 3 OP design) for...7 replies | 182 view(s)
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13th November 2019, 23:13FvM replied to a thread [SOLVED] Ohm's Law and Power calculation problem in Elementary Electronic QuestionsI gave some hints why the current waveform is likely to be distorted by the characteristic of the transducer. There may be more problems with your...30 replies | 1178 view(s)
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