FvM
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9th December 2019, 23:47FvM replied to a thread Bilinear switched capacitor resistor equivalent resistance in Analog Circuit DesignThe capacitor is charging from -ΔV to +ΔV in phase 1 and back in phase 2, total q = 4CΔV.4 replies | 228 view(s) -
9th December 2019, 23:16As shown by wwfeldmann, the post #1 equation has real roots. Similarly the equation in post #5 has two real roots, x=3.987 isn't among it, but x≈-1.2...11 replies | 613 view(s)
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9th December 2019, 22:42FvM replied to a thread LTspice...splitting LT1243 output into two separate pulse streams in PCB Routing Schematic Layout software and SimulationThere seems to be a "small" problem. LT1243 is a current mode controller. As far as I understand, there's no way to generate pwm output without using...10 replies | 350 view(s)
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9th December 2019, 22:28You need the complete pass- and stop band specification to determine the filter effort, e.g. minimal order.7 replies | 249 view(s)
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9th December 2019, 09:11It's power of n, not exponential function and can be calculated as cascaded multiply. What do you want to achieve? The equation has multiple...11 replies | 613 view(s)
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9th December 2019, 00:09FvM replied to a thread Grid tied inverters will result in high mains voltages above 300VAC..do you agree? in Elementary Electronic QuestionsNot particularly a problem of grid tied inverters. You observe different levels of short term overvoltages and surges in the grid. For a serious...5 replies | 255 view(s)
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8th December 2019, 23:54Where did you get 5.3k? Resistance of parallel circuit is 10*4.7/(10+4.7) = 3.2k.4 replies | 212 view(s)
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8th December 2019, 23:43Do you understand the meaning of Vgs(th) specification in datasheet, particularly the wide threshold voltage range?2 replies | 193 view(s)
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8th December 2019, 23:14FvM replied to a thread [SOLVED] Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)The OP apparently doesn't care for consistency of multibit data. I already asked about this point and he insists on discussing correctness of single...12 replies | 505 view(s)
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8th December 2019, 22:48FvM replied to a thread [SOLVED] Distance between MCU-Phy-Magnetics-RJ45 in PCB Routing Schematic Layout software and SimulationThe Pulse application text is an undeclared quote from an SMSC/Microchip application note....7 replies | 412 view(s)
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8th December 2019, 12:47FvM replied to a thread [SOLVED] Distance between MCU-Phy-Magnetics-RJ45 in PCB Routing Schematic Layout software and SimulationWhere do you see this specification?7 replies | 412 view(s)
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8th December 2019, 12:27You originally asked about MOSFET acting as capacitor, now you switched to common drain amplifier. It's time to clarify the topic and show a...18 replies | 576 view(s)
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8th December 2019, 12:22FvM replied to a thread [SOLVED] Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)That's not possible.12 replies | 505 view(s)
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7th December 2019, 13:56O.K., so the last point in my interpretation applies, they are not using the split output feature, just basic T-circuit (M)NPC...7 replies | 378 view(s)
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7th December 2019, 13:36Parallel circuit would be obviously necessary to build a 1.5 kW 12V input full bridge with IRFP064. You should particularly look at Rds,on and...12 replies | 553 view(s)
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7th December 2019, 12:51Do you understand MNPC topology? Do you understand the purpose of split output feature?...7 replies | 378 view(s)
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7th December 2019, 10:58The accelerometer output levels discussed in this parallel tread...6 replies | 359 view(s)
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6th December 2019, 23:23FvM replied to a thread Confusion with relating the sensor output voltages from its datasheet in Robotics and Automation ForumI agree that the datasheet is very clear about expectable output voltage. But if you plan to measure 500 ug acceleration, you should carefully...4 replies | 339 view(s)
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6th December 2019, 23:12FvM replied to a thread Stability issue of the closed loop feedback in fully differential ampliifer in Analog Integrated Circuit (IC) Design, Layout and FabricationWhats's the purpose of feedback resistor in your simulation circuit? If it's DC bias, the feedback path should be filtered in a way that it doesn't...5 replies | 379 view(s)
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6th December 2019, 23:05FvM replied to a thread Charging Voltage for a 1.2V NiMH Battery in Hobby Circuits and Small Projects ProblemsCharging VR450 continuously with 20 mA will not quickly damage it but probably reduce its lifetime by overcharging it. Continuous current without...11 replies | 500 view(s)
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5th December 2019, 18:41FvM replied to a thread [SOLVED] Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)You should ask yourself what you consider wrong data? 1. Single bit data, toggling at arbitrary times. You'll either read the old or the new data....12 replies | 505 view(s)
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5th December 2019, 16:23FvM replied to a thread Connect MQ135 Gas Sensor to Raspberry Pi 3B+ in Hobby Circuits and Small Projects ProblemsValues read for unconnected (floating) ADC inputs are meaningless. You can either connect known DC voltage for test or just ignore these values....7 replies | 359 view(s)
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5th December 2019, 12:45FvM replied to a thread [SOLVED] Distance between MCU-Phy-Magnetics-RJ45 in PCB Routing Schematic Layout software and SimulationYou have to check impedance matching and termination for each connection. Ethernet is usually terminated at the PHY, in this case, there are no...7 replies | 412 view(s)
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5th December 2019, 11:15FvM replied to a thread How to create a voltage selector circuit in Hobby Circuits and Small Projects ProblemsThe usual solution, also implemented in LM3915 dot matrix mode is working like below: - have comparators for each threshold level - have a priority...6 replies | 317 view(s)
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5th December 2019, 09:19FvM replied to a thread Charging Voltage for a 1.2V NiMH Battery in Hobby Circuits and Small Projects ProblemsV450HR has a datasheet, it's strongly suggested that you observe the specifications when designing your charging circuit. ...11 replies | 500 view(s)
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5th December 2019, 09:03A reactive load shifts the resonance frequency, it can't change the electrical length of the resonator itself. Intuitive explanation, determine...2 replies | 296 view(s)
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4th December 2019, 11:31EPM7128S is the obsolete 5V version. Mouser has only one type on stock. If you can switch to pin compatible 3.3V EPM7128A, the series is still in...5 replies | 285 view(s)
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3rd December 2019, 23:36The micro strip trace width may be correct, the trace outside the ground plane is not. You are adding considerable series inductance in the flex...8 replies | 343 view(s)
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