FvM
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Yesterday, 23:58FvM replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Mathematics and PhysicsThe emphasis of the presented results is on the feasibility of harmonic cancellation over a certain magnitude range. I'm assuming that this solution,...13 replies | 413 view(s) -
Yesterday, 19:13Crystal oscillator output has DC bias of Vcc/2, RF in bias is unknown. Where is it connected to? Use capacitor to clock oscillator DC bias. It's...10 replies | 455 view(s)
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Yesterday, 17:26For correct double balanced mixer operation (e.g. achieving the specified LO to IF isolation), RF and LO inputs must be DC free. According to your...10 replies | 455 view(s)
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Yesterday, 16:24dpaul replied to a thread Using a BFM in system verification code. in ASIC Design Methodologies and Tools (Digital)Did you consult the *_user_manual.pdf that comes with the download? You have written the master module, so you need to use the BFM as a slave. ...5 replies | 227 view(s) -
Yesterday, 15:56Can't comment unknown measurements.16 replies | 370 view(s)
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Yesterday, 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.2 replies | 132 view(s)
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Yesterday, 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...4 replies | 141 view(s)
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Yesterday, 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...13 replies | 413 view(s)
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Yesterday, 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 | 564 view(s)
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Yesterday, 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....6 replies | 183 view(s)
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Yesterday, 11:00Workaround for what? We are apparently seeing a real start transient. Unfortunately you didn't mention the test conditions.16 replies | 370 view(s)
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Yesterday, 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...13 replies | 413 view(s)
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17th November 2019, 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 | 125 view(s)
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17th November 2019, 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.13 replies | 413 view(s)
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17th November 2019, 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 | 163 view(s)
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17th November 2019, 17:17Just look at the waveform...16 replies | 370 view(s)
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17th November 2019, 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...16 replies | 370 view(s)
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17th November 2019, 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...13 replies | 413 view(s)
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17th November 2019, 14:06The angle values are monotonic, but not equidistant. Obviously the sin/cos readings are not corresponding to constant speed rotation, there seems to...16 replies | 370 view(s)
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17th November 2019, 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...12 replies | 424 view(s)
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17th November 2019, 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 | 446 view(s)
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17th November 2019, 11:42atan2() function has no "undefined situations". It's defined over full four quadrants. Review literature before guessing Simultaneous sampling...16 replies | 370 view(s)
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17th November 2019, 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...13 replies | 413 view(s)
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17th November 2019, 10:20You'll use atan2() function to convert sin/cos values to angle after digitizing it.16 replies | 370 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 | 215 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 | 4207 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 | 218 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 | 564 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 | 279 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 | 180 view(s)
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