FvM
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Yesterday, 23:11FvM replied to a thread 14 bit adc output to 5 bit data conversion in VHDL in PLD, SPLD, GAL, CPLD, FPGA DesignMay be the question is that trivial, may be some specific coding is intended. The OP missed to ask a clear question.3 replies | 180 view(s) -
Yesterday, 23:03FvM replied to a thread Phase detector with synchronous logic (FPGA) in RF, Microwave, Antennas and OpticsThe multiply idea sketched in post #1 is basically good, but it should be extended to I/Q demodulation to work over 0 to 360 degree. You can either...4 replies | 207 view(s)
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Yesterday, 13:51dpaul replied to a thread ISCAS 89-s38417 testbench required in ASIC Design Methodologies and Tools (Digital)I see the 'bench' files here http://www.pld.ttu.ee/~maksim/benchmarks/iscas89/bench/ also the core number you have listed. Was a simple google...1 replies | 145 view(s) -
Yesterday, 13:05May be mathematically correct, but wrong in Z transform context.4 replies | 183 view(s)
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Yesterday, 10:05Don't think so. U1 LED is driven with wrong polarity and has negative transistor supply. Many previously mentioned problems are still present,...21 replies | 636 view(s)
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Yesterday, 09:33FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignA bit more complex. You'll design a kind of software PLL with 2 and 4 MHz output, locked to the 2 MHz reference. Dynamic phase shift might be used if...11 replies | 553 view(s)
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Yesterday, 09:21High Voltage Coupling means what, exactly? Measuring current, voltage, linearly, which range? HCPL-0370 reference suggest you want to compare current...2 replies | 123 view(s)
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16th February 2020, 22:36If you experience contradicting hearsay specs, why not refer to major manufacturers datasheets instead?4 replies | 236 view(s)
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16th February 2020, 22:20I believe, you either don't read the answers or don't understand it. I have no other explanation for seeing the circuit in post #45 that has been...50 replies | 1144 view(s)
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16th February 2020, 13:39Incomplete problem description results in ambiguous or useless answer. At least one unclear point is floating substrate nodes. Transconductance...3 replies | 191 view(s)
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16th February 2020, 13:181/2 sample period is no meaningful quantity in sampled data system. Output is only observed at integer multiples of sampling period. You'll see if...4 replies | 183 view(s)
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16th February 2020, 13:01A symmetrical fault example, referring to your previous design. How would you detect it? - - - Updated - - - The file is different from...21 replies | 636 view(s)
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16th February 2020, 12:47I feel that some points should be sorted out. You have been originally asking how to amplify µV signal to mV, with minimal supply voltage. Later...50 replies | 1144 view(s)
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16th February 2020, 11:34The idea of an ungrounded network (IT network) is to avoid short circuit currents in case of a single ground fault while being able to detect the...21 replies | 636 view(s)
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16th February 2020, 10:26A RHP pole in the open loop transfer function can be only generated if the feedforward turns into positive feedback, likely to happen for the post #1...3 replies | 191 view(s)
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15th February 2020, 12:58FvM replied to a thread Waveform saving upon trigger in windows from Oscilloscope in Elementary Electronic QuestionsMSO2000B series has 1M data points memory, about 10 sec @ 100 kSPS. Timebase can be set up to 100 s/div, 1000 s total length with respective lower...5 replies | 257 view(s)
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15th February 2020, 12:15Your monitor circuit is generating huge leakage currents and power dissipation and surely no acceptable IMD solution. What is your of insulation...21 replies | 636 view(s)
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15th February 2020, 11:39FvM replied to a thread Waveform saving upon trigger in windows from Oscilloscope in Elementary Electronic QuestionsThe simple way to save the waveform is to set up acquisition parameters as required, make a measurement and save the waveform to USB drive in *.csv...5 replies | 257 view(s)
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14th February 2020, 15:45In case you want someone to check your transformer design, you should give complete information, e.g. which input voltage was used during the test....23 replies | 588 view(s)
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14th February 2020, 15:32Inrush current can be captured with a current probe and a digital oscilloscope. It's not clear what you exactly want to achieve and how the...3 replies | 198 view(s)
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14th February 2020, 09:48FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignPossible solutions have been sketched, but the application requirements are yet unknown.11 replies | 553 view(s)
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14th February 2020, 09:42IMD (insulation monitoring devices) are specified by IEC 61557 and available on the market. For unearthed (IT) power supplies, these devices are...21 replies | 636 view(s)
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14th February 2020, 09:27dpaul replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignThe OP has posted the same Q in Xilinx forums yesterday and did not provide sufficient details in order to answer his Q. My answer to him would be...11 replies | 553 view(s)
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14th February 2020, 09:00FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA Design10 MHz minimal clock input frequency is common series 7 MMCM spec as far as I'm aware of.11 replies | 553 view(s)
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13th February 2020, 18:08FvM replied to a thread how to generate 4MHz clock from 2 MHz clock. in PLD, SPLD, GAL, CPLD, FPGA DesignIf you have a higher frequency clock available, a digital PLL can generate the 4 MHz clock, however limited to the time resolution of the system...11 replies | 553 view(s)
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13th February 2020, 17:25Having already multi mV range offset: surely not.50 replies | 1144 view(s)
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13th February 2020, 17:21FvM replied to a thread Gas flow meter + Gas pressure meter + Vacuum meter? in Analog Circuit Design2. There's no simple method to add a readout to float-type flowmeter (rotameter). Most economic flow meters (I doubt you find cheap sensors with...2 replies | 195 view(s)
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13th February 2020, 09:02Literally, a VCO is a VFC (voltage to frequency converter) and vice versa. Specifically the term VFC refers to converters with large frequency ratio...9 replies | 559 view(s)
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13th February 2020, 08:52Some key specs missing: Signal bandwidth, source impedance, acceptable noise level (specified as voltage density or wideband noise level, e.g. 0.1 to...50 replies | 1144 view(s)
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13th February 2020, 08:42I understand this as a mostly theoretical question. On the application layer, you don't select frequencies in Bluetooth, this is done by the...3 replies | 276 view(s)
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