FvM
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Today, 12:26FvM replied to a thread asynchronous D Flip flop with negative edge triggered clk,set and reset in ASIC Design Methodologies and Tools (Digital)Can you please clarify which hardware should be represented by the equation? I'm not able to read a physical sense into it.1 replies | 21 view(s) -
Today, 12:22FvM replied to a thread Transformer Phase shift used in isolated zero crossing detectors in Power ElectronicsA voltage measuring transformer with specified accuracy class will show lower phase error, but be much more bulky. See...2 replies | 83 view(s)
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Today, 12:14FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Mathematics and PhysicsI get the below shown edge timing for cancellation of 3/5/7/9th harmonic. Time scale is rad. Magnitudes without the 4a/pi factor. I have set an...10 replies | 301 view(s)
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Today, 11:24FvM replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsO.k., if your protocol includes CRC, it will be transported through MCP bridge like any other data. So what are you specifically asking about CRC and...13 replies | 508 view(s)
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Today, 11:17FvM replied to a thread How can I measure AC current with ~500 kHz frequency? in Analog Circuit DesignVoltage dividers have to be compensated for high frequency measurements. There are a few high performance benchtop DMM with MHz frequency range....4 replies | 72 view(s)
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Today, 11:00Workaround for what? We are apparently seeing a real start transient. Unfortunately you didn't mention the test conditions.14 replies | 301 view(s)
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Today, 10:03FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Mathematics and PhysicsAs mentioned before, the fundamental and harmonic magnitudes can be best calculated and optimized using Fourier series. You can superimpose 5...10 replies | 301 view(s)
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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 | 102 view(s)
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Yesterday, 23:28FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Mathematics and PhysicsYou can determine the optimal pulse timing for harmonic cancellation using fourier series and Excel solver. I'll send you an example tomorrow.10 replies | 301 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 | 155 view(s)
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Yesterday, 17:17Just look at the waveform...14 replies | 301 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...14 replies | 301 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 Mathematics and PhysicsA similar modulation scheme with harmonic cancellation is referred to as Magic Sinewaves, for some reason using an even number of pulses per half...10 replies | 301 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...14 replies | 301 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 | 329 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 | 422 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...14 replies | 301 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 Mathematics and PhysicsJust for clarification, with 5 pulse unipolar, you are referring to a waveform like below? It has 5 degrees of freedom, should allow to set...10 replies | 301 view(s)
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Yesterday, 10:20You'll use atan2() function to convert sin/cos values to angle after digitizing it.14 replies | 301 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 | 206 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 | 4153 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 | 194 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...13 replies | 508 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"...8 replies | 242 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 | 169 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 | 221 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...8 replies | 242 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...13 replies | 508 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 | 584 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 | 290 view(s)
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