FvM
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Today, 09:11A well known problem. Once you have disabled serial and JTAG programming, parallel programming is the only way to reset the fuses. See datasheet...1 replies | 3 view(s) -
Yesterday, 22:02FvM replied to a thread Conducted emissions: Noise current limit for house hold appliances. in Power ElectronicsI didn't look for CISPR 15, because it's not strictly applicable here, but it has the first general conducted emission limit values downto 9 kHz....6 replies | 174 view(s)
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Yesterday, 18:14Although your code is legal C, you should also try DecTemp=0.0001*AdcValue;4 replies | 155 view(s)
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Yesterday, 18:08FvM replied to a thread Conducted emissions: Noise current limit for house hold appliances. in Power ElectronicsCISPR 22 is the generally applicable standard for frequencies above 150 kHz. There are some attempts to extend the limit values down to 9 kHz with...6 replies | 174 view(s)
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Yesterday, 11:41How about using RB4 to RB7 interrupt on change function? Key detection needs only moderate scan rate, it's very unusual to use interrupt for it....7 replies | 123 view(s)
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Yesterday, 10:55dpaul replied to a thread Writing ModelSim do files in ASIC Design Methodologies and Tools (Digital)Open ModelSim, go to Help menu then open the "PDF Bookcase". That will open up a pdf, the ModelSim XY Bookcase. From there open the ModelSim XY...1 replies | 82 view(s) -
Yesterday, 09:32To fully utilize the I/Q modulator capabilities, you need a dual channel arbitrary waveform generator. Adjust the amplitudes and DC offset according...2 replies | 177 view(s)
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Yesterday, 09:17You have a serious confusion with RB1_bit and EncoderA_bit respectively RB2_bit and EncoderB_bit. Encoderxx is defined as alias of the RBx, but...7 replies | 123 view(s)
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17th April 2019, 17:03So why you are designing a 20W converter?11 replies | 370 view(s)
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17th April 2019, 17:00The reference clock connector won't output 10 MHz without appropriate PLL programming. Sure everything is setup correctly?2 replies | 121 view(s)
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16th April 2019, 14:47Designing the converter for 250V*80 mA continuous power is a bad idea, I think. For safety reasons, it shouldn't provide more than the required...11 replies | 370 view(s)
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16th April 2019, 11:34FvM replied to a thread ADA4870 as a small linear amplifier with single ended VCC? in RF, Microwave, Antennas and OpticsSimple calculation, maximum output swing for bipolar supply is +/- (Vs - 2V). Calculate undistorted Vrms, output power. Maximum output into 50 ohm is...6 replies | 228 view(s)
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16th April 2019, 08:21FvM replied to a thread Offline SMPS EMC scans: Why are "common mode only" scans so expensive? in Power ElectronicsIt's of course possible. You can use a matched resistive power divider/combiner to derive CM, and a balun or a 180°-coupler to extract DM. You...9 replies | 366 view(s)
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16th April 2019, 07:58FvM replied to a thread [Verilog] Asynchronous Reset in ASIC Design Methodologies and Tools (Digital)Yes, it's the required template for synchronous registers with asynchronous reset, understood by all synthesis tools. Interpreting the code line by...5 replies | 211 view(s)
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15th April 2019, 16:07It's C programming, you can use C compiler features. I'm using printf() with hex format in this situation.8 replies | 505 view(s)
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15th April 2019, 15:56Why not use an industry standard protocol, e.g. MODBUS RTU?6 replies | 406 view(s)
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15th April 2019, 15:38FvM replied to a thread Conversion from LTSpice to Spice Model Files for Altium Designer in PCB Routing Schematic Layout software and SimulationWhat kind of models are talking about? Ltspice models can be either generic SPICE, usable without problems. Or binary encrypted models as shipped by...2 replies | 298 view(s)
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15th April 2019, 15:35FvM replied to a thread [SOLVED] Can't find Tg parameter for Roger RT6002 and RT6035HTC in Service Manuals, Requests, Repair TipsDo they have Tg? If at all, it's probably > 300 °C.1 replies | 190 view(s)
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15th April 2019, 14:46levnu started a thread [SOLVED] Can't find Tg parameter for Roger RT6002 and RT6035HTC in Service Manuals, Requests, Repair Tipsdoes somebody knows why i can't find it in datasheet or anywhere?1 replies | 190 view(s)
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15th April 2019, 07:58FvM replied to a thread Common mode noise reduction by connecting ferrite SMPS core to ground? in Power Electronicstreez has been discussing a lot about about interwinding shields, I presume he knows the difference. The question is definitely not about...14 replies | 385 view(s)
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14th April 2019, 21:17FvM replied to a thread Common mode choke SRF should selected to be at the worst case EMC problem frequency? in Elementary Electronic QuestionsI guess not, presumed you want also common mode filter action at frequencies below SRF10 replies | 1232 view(s)
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14th April 2019, 13:23FvM replied to a thread How can i chose the resistor value to simulate a PV cell in ADS in Power ElectronicsYou get the shown I/V curves basically by using a current source and a silicon diode. R and Rsh are only slightly modifying it. Did you ever try?9 replies | 2580 view(s)
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14th April 2019, 13:09FvM replied to a thread Common mode choke SRF should selected to be at the worst case EMC problem frequency? in Elementary Electronic QuestionsBecause common mode L is high. 10 mH || 7 pF gives 600 kHz10 replies | 1232 view(s)
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14th April 2019, 12:35FvM replied to a thread Common mode noise reduction by connecting ferrite SMPS core to ground? in Power ElectronicsHow is it connected?14 replies | 385 view(s)
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14th April 2019, 12:16FvM replied to a thread Design to state position of first one from lsb every clock for parallel data coming in ASIC Design Methodologies and Tools (Digital)Review this previous thread for an explanation. https://www.edaboard.com/showthread.php?371130-how-to-locate-the-addresses-of-1-s-in-std_logic_vector...8 replies | 726 view(s)
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14th April 2019, 11:17FvM replied to a thread Common mode noise reduction by connecting ferrite SMPS core to ground? in Power ElectronicsNothing shown about the transformer. Why do you assume it's a ferrite core?14 replies | 385 view(s)
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14th April 2019, 10:52Not at all. Firstly a/b ≠ (a+c)/(b+c) Secondly, the microcontroller ADC inputs are sampled sequentially, each input sees a different aliasing...5 replies | 207 view(s)
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