FvM
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Today, 07:18Mithun_K_Das replied to a thread PLL and LCD: LCD shows garbage while PLL is used in MicrocontrollersAs I found, any simple code with LCD and dsPIC30F2010 have this issue. I've completed few projects recently with dsPIC. when the oscillator is...5 replies | 285 view(s) -
Yesterday, 17:08FvM replied to a thread simulating the open loop gain of fully differential amplifier fwith open loop setup in Analog Integrated Circuit (IC) Design, Layout and FabricationI don't believe so. Most people are simulating open loop gain in an intelligent setup, using some kind of DC feedback that doesn't affect the AC...1 replies | 83 view(s) -
Yesterday, 17:04That's a bit more of information. 1. There may be a hardware problem, e.g. wrong or incomplete connection of the modem module, missing handshake...9 replies | 244 view(s)
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Yesterday, 13:13OERR means overrun error, a new character arrived before the UART buffer has been read. Apparently your code isn't able to process the data in time....9 replies | 244 view(s)
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Yesterday, 13:10The instruction j -= 1 is effectively pausing the loop to wait for a certain event. Can cause an endless loop in case of unexpected hardware...6 replies | 144 view(s)
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Yesterday, 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?12 replies | 358 view(s)
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27th February 2020, 23:12Input is biased to mid supply, no problem.12 replies | 358 view(s)
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27th February 2020, 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 | 270 view(s)
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27th February 2020, 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?...3 replies | 157 view(s)
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27th February 2020, 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 | 288 view(s)
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27th February 2020, 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 | 274 view(s)
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27th February 2020, 12:16What is input signal in your circuit? How do you measure it? How should the problem be related to uA733?12 replies | 358 view(s)
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27th February 2020, 10:35I don't see it in the TL dimensions. You have completely different dimensions in lower and upper branch.4 replies | 270 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 | 374 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 | 319 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 | 198 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 | 270 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 | 288 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 | 258 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...5 replies | 285 view(s)
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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 | 319 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 | 426 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 | 319 view(s)
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25th February 2020, 17:18I'd consider HC-05 as the most popular one.7 replies | 457 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 | 631 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 | 250 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 | 379 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 | 1163 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 | 374 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 | 374 view(s)
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