FvM
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Today, 08:48FvM replied to a thread Stacking diodes for high voltage rectification in Elementary Electronic QuestionsAvalanche diodes are mostly used in HV diode stacks, e.g. the 8 kV/2.5A stack of Semikron. Avalanche capability means in this regard, that a diode...22 replies | 394 view(s) -
Yesterday, 22:48FvM replied to a thread Stacking diodes for high voltage rectification in Elementary Electronic QuestionsThe usual solution is to use diodes with avalanche characteristic that can be series connected without voltage sharing means.22 replies | 394 view(s)
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Yesterday, 22:22It's apparently an EC (electrical conductivity) meter. EC is sometimes used as an estimation of TDS, but only valid for ionic compounds. The timer...2 replies | 98 view(s)
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19th August 2019, 13:46see this thread on PS-PL communication - https://forums.xilinx.com/t5/Embedded-Processor-System-Design/PS-PL-communication/td-p/847775 You might...6 replies | 188 view(s) -
19th August 2019, 10:24For PL to PS, you can also use the AXI i/f. The PS section can typically stay as the master and the PL section can stay as the AXI slave. The...6 replies | 188 view(s)
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19th August 2019, 09:52What is PL and PS? See forum rules, you shouldn't use6 replies | 188 view(s)
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19th August 2019, 08:22Regarding PWM scheme in post #19, it produces intended sine waveform only for resistive and under circumstances inductive load.22 replies | 851 view(s)
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19th August 2019, 08:12It really depends on the intended probe frequency range, which wasn't specified along this thread. The shown resistor divider primarily suffers from...26 replies | 583 view(s)
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18th August 2019, 22:56O.k., voltage and current are almost in phase now, apparently a DC offset of the Rokowski measurements is causing a ramp in the current display,...23 replies | 561 view(s)
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18th August 2019, 11:31With an estimated capacitance of 1 pF for the 100 Mohm resistor, you get a zero at 1600 Hz. A single 1 nF compensation capacitor can at least improve...23 replies | 561 view(s)
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18th August 2019, 10:41Is it a similar divider as in your other thread? If so, I doubt that the voltage waveform isn't reproduced correctly. Similarly, what kind of...23 replies | 561 view(s)
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18th August 2019, 08:07Rectifier output voltage is clamped to n*diode forward voltage, e.g. a few 10 V in your design.26 replies | 583 view(s)
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17th August 2019, 22:25It's not surprizing to see large ripple at the rectifier output. Negative voltage as shown is however not feasible. Most likely explanation is the...26 replies | 583 view(s)
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17th August 2019, 14:10You're simply confusing source and load impedances. Rain is the impedance of the source driving the ADC, minimal OP load impedance has nothing to do...7 replies | 267 view(s)
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17th August 2019, 13:55FvM replied to a thread Why does my homemade Yagi wifi antenna perform so poorly? in RF, Microwave, Antennas and OpticsYou are right, driving element impedance depends on the reflector and director spacing. I found this table in Balanis Antenna Theory. Numbers are for...18 replies | 658 view(s)
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16th August 2019, 22:35You can try to make the 12 V inductor large enough to provide continuous current at 2 W load. Coupled inductors can basically work, obviously the...17 replies | 470 view(s)
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16th August 2019, 22:30FvM replied to a thread Why does my homemade Yagi wifi antenna perform so poorly? in RF, Microwave, Antennas and OpticsThanks for mentioning the foam board. So it's actuality a folded dipole. Unfortunately it's seriously mismatched in this case, having typically 290...18 replies | 658 view(s)
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16th August 2019, 22:05How do you measure it? Sure that the probes don't affect the circuit? The question isn't clear at all.23 replies | 561 view(s)
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16th August 2019, 15:27Post the complete RTL. Are you properly doing the system clock input pin assignment in the xdc file?3 replies | 147 view(s)
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16th August 2019, 15:24dpaul replied to a thread Verilog code for 8 bit register with read/write in PLD, SPLD, GAL, CPLD, FPGA DesignI hope you realize that in order to have data from an axi slave to a 8 bit register, the 8 bit register must also have an axi wrapper. That axi...6 replies | 404 view(s)
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16th August 2019, 11:22The post body doesn't match the title. Where's the Verilog code?3 replies | 147 view(s)
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16th August 2019, 11:13FvM replied to a thread Why does my homemade Yagi wifi antenna perform so poorly? in RF, Microwave, Antennas and OpticsAs shown in the picture, it's a straight 60 to 75 ohm half wave dipole, not a folded dipole. This makes sense because it's roughly matched to the 50...18 replies | 658 view(s)
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16th August 2019, 10:58Apart from possible ringing and overshoot, a forward converter shows only tracking outputs if both inductors are in continuous conducting mode (CCM)....17 replies | 470 view(s)
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15th August 2019, 12:26FvM replied to a thread [SOLVED] magnet wire parasitic properties in Elementary Electronic QuestionsSelf capacitance in the Snelling book means inter turn capacitance.5 replies | 240 view(s)
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15th August 2019, 10:01If it's isolated RS-485, e.g. PROFIBUS network, it doesn't necessarily use ground connection. Star connection through "junctions box" is only...4 replies | 176 view(s)
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15th August 2019, 09:51FvM replied to a thread [SOLVED] magnet wire parasitic properties in Elementary Electronic QuestionsSnelling, Soft Ferrites, paragraph 11.6 The Self Capacitance of a Winding does detail calculations of different winding configurations. The 1969...5 replies | 240 view(s)
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15th August 2019, 08:05For Xilinx FPGAs containing ARM core/s I can recommend you to start with the this free to download eBook: http://www.zynqbook.com/ Many of the...2 replies | 189 view(s)
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14th August 2019, 22:37FvM replied to a thread 1 minute vs 1 second isolation voltage test for isolated offline SMPS transformer in Power ElectronicsYou have previously written that the power supply is classified as basic insulation. Then the test is surely not performed with 3750 VAC. EN 61558 is...17 replies | 739 view(s)
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