KlausST
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Today, 21:37KlausST replied to a thread Is it necessary to set FPGA and ASIC operating frequency to the same amount? in ASIC Design Methodologies and Tools (Digital)Hi, You set the frequency according your requirement. If you need it to work with 50MHz, then set it to 50MHz If you need it to work with...1 replies | 52 view(s) -
Today, 17:59Hi, I donīt understand why "non interrupt" solution. In my eyes this is a classical application for interrupt based processing. I...17 replies | 339 view(s)
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Today, 08:42Hi, A rather curious requirement. The measurement may take 10ms ... or 20ms --> a bit more than 3ms tolerance The SSR switching time maybe...17 replies | 339 view(s)
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Today, 03:04Hi, Fast code: What is the most time consuming with "RMS"? Usually the "square root" function. Then omit it. For example: If you want to...17 replies | 339 view(s)
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Yesterday, 22:34KlausST replied to a thread Undersampling ADC for RMS conversion possible? in Elementary Electronic QuestionsHi, Yes, undersampling is possible. But avoid fs to be integer division of f_AC. Klaus1 replies | 71 view(s)
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Yesterday, 14:16KlausST replied to a thread A question about Manual Press Fit DIN connector machine in PCB Routing Schematic Layout software and SimulationHi, Iīd ask the connector manufacturer or connector distributor. Klaus1 replies | 123 view(s)
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Yesterday, 14:03Hi, in the datasheet there is a chapter "Design considerations". If you donīt keep on them you should not be surprised if it does not work. ...13 replies | 247 view(s)
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Yesterday, 13:56Hi, Sorry, my fault. I also meant ADE7868. Still I donīt find the information that itīs not possible to use it in single phase application. ...8 replies | 231 view(s)
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Yesterday, 08:05Hi, Out of curiosity I tried to find out why AD7686 can not be used in single phase mode by going through the datasheet. I could not find such...8 replies | 231 view(s)
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Yesterday, 07:45Hi, 1) Did you read the datasheets? Are you sure the 3-phase ones can't be used for single phase? 2) You surely are free to use 3 x single...8 replies | 231 view(s)
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Yesterday, 07:41Hi, There are really many DC/DC converters directly outputing +15V and -15V. Farnell lists more than 800 devices with dual output +/-15V. ...4 replies | 223 view(s)
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Yesterday, 07:34Hi, Daisy chaining JTAG devices should need no extra logic. It can simply be done with JTAG protocol. You should be able program to program one...13 replies | 437 view(s)
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19th November 2019, 19:27Hi, Why you want tristate? It is an undefined logic level. The receiver may see HIGH or LOW, or oscillation... Klaus13 replies | 437 view(s)
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19th November 2019, 07:22KlausST replied to a thread Difference circuit not acting as expected in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, It seems you work with digital signals. If so, then use ICs designed for digital operation. (An OPAMP is designed fir analog signals and thus...3 replies | 163 view(s)
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18th November 2019, 09:02KlausST replied to a thread Transformer Phase shift used in isolated zero crossing detectors in Power ElectronicsHi, Ideal transformers don't have phase shift between V_in and V_out. Real transformers have. It is caused by the stray (series) inductance,...4 replies | 181 view(s)
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18th November 2019, 08:42KlausST replied to a thread Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics in Mathematics and PhysicsHi, I see your idea: There are positive signals causung some overtones...and there is the same signal negative ...and you want it to cancel all...17 replies | 634 view(s)
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18th November 2019, 08:30Hi, "Which one is better?" in most cases are useless questions. Useless, because nobody knows what "better" means. Better in which regard?...3 replies | 275 view(s)
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18th November 2019, 08:19Hi, First you need to give complete informations. --> replace the "?" with the logic levels you desire. Klaus13 replies | 437 view(s)
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17th November 2019, 21:12KlausST replied to a thread How to find the operating frequency for an ASIC? in ASIC Design Methodologies and Tools (Digital)Hi, The usual way is to set the timing constraint first, then the compiler should optimize it to match the specifications. If you first set to...2 replies | 149 view(s)
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17th November 2019, 10:48Hi, Rather straight forward: If cos = 0, then there are just two possible solutions: Phi = 90° when sin = positive Phi = 270° when sin =...16 replies | 428 view(s)
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17th November 2019, 10:43KlausST replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsHi, Usuall you have this configuration: Line --> LF transformer -> bridge rectifier --> capacitors For sure the libe as well as the tranformer...12 replies | 511 view(s)
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17th November 2019, 10:29Hi, Sin/cos = tan Thus divide your "sin" value by your "cos" value. Mint the undefined situations where cos value ( 90° and 270°) Then from...16 replies | 428 view(s)
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16th November 2019, 16:42Hi, a motor is a device that tranforms electrical power to mechanical power (and vice versa). The mechanical power is: P = 2 * Pi * RPS *...8 replies | 598 view(s)
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16th November 2019, 15:35Hi, For sure the datasheet canīt give a table for every possible XTAL frequency. (It surely has enough pages yet. ) But you are able to use...9 replies | 330 view(s)
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16th November 2019, 15:09KlausST replied to a thread Doubt in the concept of 3 phase thyristor based full wave fully controlled rectifier in Power ElectronicsHi, There are several issues in your post/schematic. Please read some reliable documents from semiconductor manufacturers. They usually...4 replies | 235 view(s)
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16th November 2019, 12:47Hi, the datasheet should tell you the limitations. I doubt that a PIC generally has a baud rate limiting around 100kBaud. I rather assume...9 replies | 330 view(s)
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16th November 2019, 12:41KlausST replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsHi, CRC has nothing to to with * the voltage levels * UART * USB * RS232 ... It is part of a protocol. This means: the data you send and...13 replies | 602 view(s)
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15th November 2019, 22:45Hi, Disabled outputs are floating = high impedance. This means the voltage is not defined...and thus is what you see. Additionally high...3 replies | 284 view(s)
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15th November 2019, 22:30Hi, This is not how a forum works. We don't spend our time to give a solution from the scratch. --> Show us what you did so far. Show us your...1 replies | 292 view(s)
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15th November 2019, 19:15Hi, An analog MUX usually is bidirectional. I think you donīt need this. OpenCollector outputs need a pullup. This may be waste of power or slow...13 replies | 437 view(s)
About KlausST
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21st November 2019
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