FvM
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Today, 10:46Can we please clarify the post #4 question. What's the oscillator type and has it really low output voltage in the 100 mV range, or even less?9 replies | 235 view(s) -
Yesterday, 23:12Input is biased to mid supply, no problem.9 replies | 235 view(s)
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Yesterday, 17:36So is your question. It's not clear at all how closed loop transfer function is related to PLL jitter. If you are asking about a specific...3 replies | 253 view(s)
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Yesterday, 17:26How do you determine that the design is not "working"? How is the shown code used on the board, is test the top design and how is start generated?...1 replies | 103 view(s)
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Yesterday, 17:13FvM replied to a thread [SOLVED] Can you please explain how this N-Channel JFET with Diodes work? in Analog Circuit DesignTo understand the basic amplifier operation, you can place a high ohmic resistor instead of the diodes.6 replies | 252 view(s)
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Yesterday, 12:27I expect that the "finger test" adds in the first place losses rather than capacitance. As long as you don't monitor transmission along with...3 replies | 245 view(s)
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Yesterday, 12:16What is input signal in your circuit? How do you measure it? How should the problem be related to uA733?9 replies | 235 view(s)
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Yesterday, 10:35I don't see it in the TL dimensions. You have completely different dimensions in lower and upper branch.4 replies | 244 view(s)
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26th February 2020, 23:04FvM replied to a thread Adding a 3 band equalizer to a phantom powered electret mic amp in Analog Circuit DesignThis sounds all quite strange. If you don't have a suitable professional microphone for comparison, can't you loan a known good condenser microphone...11 replies | 345 view(s)
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26th February 2020, 19:57FvM replied to a thread How can Transmission line does not see Stub? in RF, Microwave, Antennas and OpticsWhat do you mean with "short circuit"? A short (reflection factor = -1) would reflect the wave back to the input. An absorber port should have 50 ohm...6 replies | 291 view(s)
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26th February 2020, 17:36You'll review material specification for the respective ferrite type, or refer to general data in text books. Most ferrites have linear (decreasing)...1 replies | 177 view(s)
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26th February 2020, 17:25The TL width settings look arbitrarily wrong. What are the intended port impedances?4 replies | 244 view(s)
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26th February 2020, 16:11FvM replied to a thread [SOLVED] Can you please explain how this N-Channel JFET with Diodes work? in Analog Circuit DesignThe diodes may be also used as replacement for a high ohmic bias resistor, e.g. in an electret microphone or pyroelectric IR sensor amplifier.6 replies | 252 view(s)
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26th February 2020, 12:13FvM replied to a thread The difference between | operator and keyword or in PLD, SPLD, GAL, CPLD, FPGA DesignGet the Verilog language reference manual IEEE Std. 1800-2017 for free through IEEEGet program: https://ieeexplore.ieee.org/document/8299595 ...4 replies | 245 view(s)
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26th February 2020, 11:23If there is no PLL used, then display is ok. But when PLL is used LCD starts showing garbage. In this case what technique should be used to...4 replies | 257 view(s) -
25th February 2020, 19:27FvM replied to a thread How can Transmission line does not see Stub? in RF, Microwave, Antennas and OpticsThat's hardly possible with this circuit. Sounds like you want a SPDT switch (at least two pin diodes) instead of a SPST. It's however not clear...6 replies | 291 view(s)
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25th February 2020, 19:16There are a few points that are marked as implementation dependent in C language reference, but not this basic operator precedence thing. If the...11 replies | 414 view(s)
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25th February 2020, 17:25FvM replied to a thread How can Transmission line does not see Stub? in RF, Microwave, Antennas and OpticsThe purpose of the circuit isn't quite clear. First, point, you get impedance mismatch and reflections at Tee1 if the diode is turned on. ...6 replies | 291 view(s)
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25th February 2020, 17:18I'd consider HC-05 as the most popular one.7 replies | 450 view(s)
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25th February 2020, 14:55FvM replied to a thread Waveform saving upon trigger in windows from Oscilloscope in Elementary Electronic QuestionsUnless someone has the instrument and free time to check the question for you, who could answer the question? I would focus on the question if the...7 replies | 622 view(s)
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25th February 2020, 14:49FvM replied to a thread Looking for a single SMD pin header in Professional Hardware and Electronics DesignSMT pin headers are available with 2 positions minimal.3 replies | 234 view(s)
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25th February 2020, 09:30ISO 7637-2 doesn't cover motor inrush currents, except for the pulse 4 motor starter scenario which is quite different from your problem. ...6 replies | 359 view(s)
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25th February 2020, 09:03FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignI was taking this as granted. But what's the DDS frequency if it's not 2 MHz? Does your design involve an additional frequency divider between the...19 replies | 1158 view(s)
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25th February 2020, 08:59FvM replied to a thread Adding a 3 band equalizer to a phantom powered electret mic amp in Analog Circuit DesignYou don't necessarily need an amplifier to use phantom supply for an electret microphone. You can also make a simple pseudo-differential circuit,...11 replies | 345 view(s)
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25th February 2020, 00:33FvM replied to a thread Adding a 3 band equalizer to a phantom powered electret mic amp in Analog Circuit DesignIt's rarely the microphone that's responsible for "ring at certain frequencies" and it's quite unusual to use an equalizer in front of the mixing...11 replies | 345 view(s)
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25th February 2020, 00:22You are asking about off-line SMPS, which are comprised of a rectifier, a filter capacitor and a flyback converter. Unless you are designing a PFC...3 replies | 248 view(s)
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24th February 2020, 13:00FvM replied to a thread Calculating capacitor ripple current in output filter of DCDC module? in Power ElectronicsNo, no. You can review typical tan d and ESR characteristic from several manufacturers, e.g. Epcos/TDK. Tan d is roughly proportional to frequency. ...11 replies | 443 view(s)
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24th February 2020, 12:07dpaul replied to a thread [SOLVED] Changing the ModelSim version that comes with Libero SoC v12.3 in PLD, SPLD, GAL, CPLD, FPGA DesignWell I did ask for that and the local FAE told me that it won't be provided. They will provide the compiled libraries for the 64bit DE version. ...14 replies | 1238 view(s) -
24th February 2020, 11:40FvM replied to a thread Impedance vs frequency plot of input filter of SMPS? in Analog Circuit DesignSurprising that the datasheet shows several filter circuits with impedance curve, but none is specifying the inductor series resistance. Basic...2 replies | 217 view(s)
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24th February 2020, 11:28FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignI was referring to xapp868 where a 32 bit DDS is running at 2.048 MHz. Not sure how your design is different. What's the DDS phase accumulator...19 replies | 1158 view(s)
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