FvM
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Yesterday, 22:49I don't see how you can achieve a stable segment current with the driver circuit. The driver ICs have relative large voltage drop, you would need a...5 replies | 173 view(s) -
Yesterday, 22:31A single BJT amplifier has an offset drift of 2 mV/K, so it's surely inappropriate for a 60 mV shunt. Before discussing reasonable amplifier...7 replies | 164 view(s)
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Yesterday, 18:04Vertical MOSFET, e.g. all power MOSFET have the substrate tied to source by design. Respectively there's always a "body diode" connected in parallel...1 replies | 75 view(s)
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Yesterday, 10:57That's what I learnt as a student, but we see many halogen lamps with dimmer, in domestic as well as stage lighting. They seem to achieve a fair...15 replies | 401 view(s)
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Yesterday, 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...27 replies | 569 view(s)
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20th August 2019, 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.27 replies | 569 view(s)
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20th August 2019, 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...3 replies | 194 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 | 200 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 | 200 view(s)
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19th August 2019, 09:52What is PL and PS? See forum rules, you shouldn't use6 replies | 200 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 | 888 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 | 623 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 | 590 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 | 590 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 | 590 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 | 623 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 | 623 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 | 278 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 | 713 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 | 501 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 | 713 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 | 590 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 | 155 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 | 418 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 | 155 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 | 713 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 | 501 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 | 248 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 | 182 view(s)
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